Sunday, October 30, 2011

Value Of PI


Shigeru Kondo has succeeded in calculating Value of Pi to ten trillion digits with the help of a grad. student Alexander Yee. Ever since discovering of pi (π), he had an interest in calculating value of pie. He'd been following the results achieved by others using massive supercomputers. He calculated value of pie to ten trillion digits, on a home PC. 

Friday, October 28, 2011

Computer History


Historical Evolution Of Computers

*Abacus: Abacus was the first manual calculating device. It is a portable device that consists of beads stung on wires or wooden rods. It is divided into two parts by a mid bar. It was the predecessor of computer used for counting and adding purpose during 5000 BC to 2000 BC. It is said that it has its origins in ancient China, Egypt and Greece.

*Napier's Bones:John Napier invented a computing device called Napier's Bones consisting of eleven sticks with numbers carved on them in 1617. These sticks were made of bone and wood. It helped in multiplication and division problems involving large numbers.

Grand Theft Auto V

Rockstar Has Officially Announced That








A trailer is going to be released for GTA V .You can watch it in GTA V's Official Site on November 2, 2011

MLTR Comes to Nepal

The 90's rock band MLTR or Michael Learns To Rock is coming Nepal this november. MLTR is  from Denmark and is popular for softrock songs. MLTR has sold over 11 million records worldwide and boasts an impressive fan following, especially in Asia – where they’re touring come October.
According to them

“We are happy to announce that Michael Learns To Rock will do a concert in Nepal in November. Further details on date and ticket information will follow soon.”
-Michael Learns To Rock

Their concert of Bangladesh is fixed and are also planning to land in Nepal.Although they had performed concerts in many city of Asia but they are performing for the first time in Kathmandu and Bangladesh.The current lineup comprises of Jascha Richter on vocals and keyboard, Kåre Wanscher on drums, and Mikkel Lentz on guitar.Their eighth album is to be released on August 11

Ad your own 'Favorites' to Windows Explorer

Open Windows Explorer with [Win] + [E] and navigate to the folder that you want to add to Favorites. Then click to the folder icon and keep the left mouse button pressed. Drag the icon into the navigation pane over the position in the 'Favorites' area where you want to drop it before releasing the button.Done!
The folder is added to Favorites.
If you want to delete an entry from the Favorites, right click the entry and select 'Remove' context command

Remote Control Computer Using Mobile


You can remote control everything from your mobile phone -from Powerpoint presentations to media players. This is  surely going to be a fun experience ,you can just relax, sit back and control everything  you want to.
All you need is a bluetooth in your mobile phone and a bluetooth dongle installed in your PC and you are ready to control it. And you will need to install both the PC server and mobile application and for nokia users its quite easy as the nokia PC suite will do.
Its very easy to use. Start the PC server application and the mobile phone application and they both will get connected to each other and you can access your PC from your phone easily.

There are so many things that you can do with this.You can quickly change the song track or videos and adjust the volume or browse for artists and albums.You can even access windows explorer, internet explorer and firefox. You can give commands to your computer and send text messages through your desktop at the same time.
It consists of two parts, the client and the server. The client is located into mobile phones with bluetooth capabilities and the server is located on the PC you want to remote control.

Here are some of the options of Free PC Remote Control Software:

  • You are given an option to customize your applications through keymaps,VB or Jscript
  • It supports all the bluetooth solutions like Toshiba,Windows, Bluesoleil and Widcomm or Broadcom.
  • It controls everything- mouse cursor, keyboard, media players, explorer or any content of your computer through your mobile phone.
  • It is free of cost and user friendly
Now no need to sit in front of your computer and control it as this amazing software gives you all the comforts you want. You can just relax, sit back on your sofa and control your PC instantly. You just need a computer and a mobile phone. Its entirely free and is easy to use.

Download it here
http://www.mobilewitch.com/download/mobile-witch-remote-control-free.exe

Minesweeper Hidden Mode(XP Only)

If you can play all 3 modes easily and something harder that follow this.
Reset Your Highscores.
Play all three modes and write your name WRAPFILED
Then Cick On the Smiley.
The Yellow Happy Face will look like a Red angry Face.
The game will be much harder.
If you want the old modes then simply reset the highscores

Thursday, October 27, 2011

A person gets Rs.5 crore IC in KBC,

Kaun Banega Crorepati a show in India translation of Who wants be a Millionaire is run by Amitabh Bachan. A person of Bihar gets IC Rs. 5 Crore in this reality show. This show is coming on Kartik 16 next week in Sony channel.

Wednesday, October 26, 2011

Tihar

Tihar
Tihar one of the best festival in Hindu religion. It is celebrated in different states of India and Nepal. It is also called the festival of lights. In tihar people have a blast with patakas and lights. In Nepal it is celebrated in five days i.e.
  • Kag Tihar (A festival of worshipping crow)
  • Kukur Tihar (A festival of worshipping dog)
  • Laxmi Puja or Gai Puja (A festival of worshipping goddess laxmi and cow )
  • Gobardhan Puja (A festival of worshipping Ox)
  • Bhai Tika 
We the people of Nepal celebrate this festival with great joy and happiness. In this festival we also play cards which gives us entertainment. We also play Deusi and Bhailo which is also very intersting. In which we go to different houses and ask the house dwellers to help us by singing. Celebrating tihar is a great fun.

Tuesday, October 25, 2011

Computer Security

Here are different types if Computer Security....
a. Hardware Security
b. Software Security

Hardware Security
 Computer equipments can be made secured by various ways as follows:
i) Regular Maintenance
ii) Insurance of Hardware
iii) Power Regulator Devices (eg: UPS, Volt Guard)
iv) Protection from theft
v) Protection of computer from fire
vi) Protection from theft
vii) Air Condition

Software Security
i) Defragmentation
ii) Password Protection
iii) Scandisk
iv) Backup System
v) Virus Scanning
vi) Using Original Software

Some commands used in QBASIC

FILES = Displays files in QBASIC mode.
              Syntax = FILES <file name>
              Eg: FILES(Enter)  or FILES "*.bas"(Enter)

NAME=Helps to rename file.
              Syntax =NAME<old filename> as <new filename>
              Eg: NAME "Ram.bas" as "Sita.bas" (Enter)
MKDIR=Creates a new directory.
             Syntax = MKDIR<Directory Name>
             Eg: MKDIR "My Files" (Enter)
CHDIR =Changes the directory.
             Syntax = CHDIR <Old directory name>
             Eg: CHDIR "My Files" (Enter)
RMDIR = Helps to remove unwanted directory.
             Syntax = RMDIR <Empty directory name>
             Eg: RMDIR "My Files"(Enter)
KILL    =Helps to delete the unwanted files.
             Syntax = Kill <existing filename>
             Eg: KILL "Sita.bas"(Enter)
Shell     =Takes to DOS mode
             Syntax: Shell
             Eg: SHELL (ENTER)

Qbasic (Input name of 10 names and sort in ascending order)

DECLARE FUNCTION SOR$(N$())
CLS
DIM N$(10)
PRINT "ENTER NAME OF TEN STUDENTS"
FOR I = 1 TO 10
INPUT N$(I)
NEXT
X$=SOR$(N$())
END

FUNCTION SOR$(N$())
FOR I = 1 TO 10
FOR J = 1 TO 10
IF N$(I) < N$(J) THEN SWAP N$(I) , N$(J)
NEXT
NEXT
FOR I = 1 TO 10
PRINT N$(I)
NEXT
END FUNCTION

Qbasic (Input 10 different marks and find greatest)

Declare Sub res(n())
CLS
DIM N(10)
PRINT "ENTER MARKS OF TEN STUDENTS"
FOR I = 1 TO 10
INPUT N(I)
NEXT
CALL RES(N())
END

SUB RES(N())
LET G = N(1)
FOR I = 2 TO 10
IF G<N(I) THEN G = N(I)
NEXT
PRINT "GREATEST MARKS IS"; G
END SUB

Qbasic (Enter 10 different nos. and find total and average)

DECLARE FUNCTION ARR(A())
CLS
DIM A (10)
PRINT "ENTER 10 NOS"
FOR I = 1 TO 10
INPUT A (I)
NEXT
LET SM = ARR(A())
LET AVG = SM/10
PRINT "SUM IS"; SM
PRINT "AVERAGE IS"; AVG
END

FUNCTION ARR(A())
FOR I = 1 TO 10
LET S= S+A(I)
NEXT
ARR = S
END FUNCTION

Qbasic (Loading)

CLS
LOCATE 14,36: PRINT "LOADING"
FOR I = 31 TO 51
COLOR 4
LOCATE 7, I + 1 : PRINT (CHR$92,9))
COLOR 7
LOCATE 8,40: PRINT X*5; "%"
X = X +1
FOR J = 1 TO 500000 : NEXT
END

Monday, October 24, 2011

Test Your Antivirus





Do you want to check if antivirus in your computer is working or not? If you want to check then you follow the following steps:

1. Open Notepad.
Type the following:

X5O!P%@AP[4\PZX54(P^)7CC)7}$EICAR-STANDARD-ANTIVIRUS-TEST-FILE!$H+H*

Now save the file with extension .exe for example : testantivirus.exe

Now you will see your antivirus warning you to delete that file. If your antivirus gives you the warning then your notepad is working fine but if antivirus is not giving warning then you have problem with antivirus...

Donot fear because it is not a harmful experiment.

An easy guide of QBASIC

QBASIC(Quick Beginners All Purpose Symbolic Instruction Code) is a simple programming language for beginners. It is a language which helps people to learn about other programming languge. if you are good at Qbasic then you will have easy guide to other programming language. There are different modules in Qbasic. Like
(I)Sub Module
(II)Function Module
(More about Qbasic in other posts.)

Speed Up your Computer

Disable the unwanted services that are causing you trouble in your computer's performance...

Goto RUN then type "Services.msc"

And disable the services which you don't need..
If you are not in network then you can disable all the networking services.

A site that can help you a lot!!!

Visit a useful site

Saturday, October 22, 2011

Computer Measurement Units

Memory of storage capacity measurement

We come across different measuring units like kilogram, meter and liter and so on to measure weight, length and capacity or volumes of different commodities. Similarly, when we have to measure the capacity of computer’s memory, storage devices and length of programs, units like kilogram, meter and liter can not be used. Hence, we use the units like BIT, NIBBLE, BYTE and WORD.

BIT

BIT is an abbreviation of the words binary digit and is the smallest units of information. It is either ‘0’ or ‘1’. The raw data fed into the computer are first converted into an electrical pulses or BITs, as the computer do not recognize the general form of data like numbers (0-9), alphabets (a-z or A-Z) and special characters like punctuation marks and arithmetic signs. The 0 and 1 of the binary system corresponds to the ON and OFF of the flow of electrical in the computer’s circuits. Computer works by recognizing the presence or absence of an electrical pulses or BITs at a particular time.

NIBBLE

A NIBBLE is a string of four BITs. The earliest form of code, called ‘Binary Decimal Code (BCD)’ used a NIBBLE for every character.

For example:

Character 3 A

BCD (NIBBLE) 0011 1010

BYTE

It is the unit of measuring computers memory and size of a program. One BYTE is the string of eight binary digits (BITS). It may represent a single letter, numeral or other characters. Computer memory is expressed in terms of Bytes, Kilo bytes(KB), Mega bytes(MB), Giga bytes(GB) and Tera bytes(TB).

8 bits = 1 byte

1024 bytes = 1 kilobyte (KB)

1024 kilo bytes = 1 Mega byte (MB)

1024 mega bytes = 1 Giga byte (GB)

1024 giga bytes = 1 Tera byte (TB)

A ‘Kilo’ should mean 103 (10×10×10) that is 1000 bytes. However, since the computer used Binary system and 210 (i.e. 2×2×2×2×2×2×2×2×2×2) equals to 1024 bytes, which is nearly 1000 bytes. Hence, ‘Kilo’ refers to 1024 in measuring units of computer.

WORD

A computer word is defined in terms of bytes. A word may be formed by combining two or more bytes. The most common combination if of four bytes. Word-length is a length of bits that occupy one location in memory. A computer having a smaller word-length is slower that another having a larger word-length is, though the speed of both is same. Word-length is generally fixed for a computer, but some computers have a challengeable word-length i.e. they can be used in doing small or big tasks. Nowadays computers have word-length of 16, 32, 48, 64, 128 or more bits.

Friday, October 21, 2011

Speed Up your Computer

Disable your CD Auto run for WINDOWS XP Pro

First of all, goto Run and type "gpedit.msc"

Then you go to the Computer Configuration >> Administrative Templates >> System.

Find the entry for Turn auto-play off and then you modify it as you desire it to be.....

Speed Up your Computer

Disable the unwanted services that are causing you trouble in your computer's performance...

Goto RUN then type "Services.msc"

And disable the services which you don't need..
If you are not in network then you can disable all the networking services.

Speed Up your Computer

Your Desktop Background consumes a lot of time.. So its better to disable it.

*Right click on the Desktop and then select Properties tab.
*Then select the Desktop tab.
*Then Select None in Background Tab
*Click ok then you are done..

Speed Up your Computer

Speed Your Computer up.

DISABLING YOUR INDEXING SERVICE
*Goto Control Panel
*Double-click on "Add/Remove Programs"
*Then Click on the "Add/Remove Window Components"
*Now Uncheck the Indexing services
*Then Click Next

Calculation In MS-DOS

You can calculate via MS-DOS
GOTO MS-DOS and type the following

C:\>set /a 5+6
11
C:\>set /a 45*2
90
C:\>set /a 54-24
30

This is how you can do calculations in MS-DOS

Nokia Codes

NOKIA CODES

*#06# IMEI Number can be checked.
*#67705646# Operator logo can be cleared.
*#2820# Blue tooth’ device address can be known.
*#7328748263373738# Reseting Security Code’.
*#0000# View your software version.
*#9999# If #0000# is not working then you can view your software version.
*#7780# Factory Settings’ can be restored.
*#92702689# Serial number, date of purchase, month and year of manufacture, last repaired date of your handset can be viewed.
*#4720# Half-Rate Codec will be activated
*#2640# Current phone security code will be shown.
*#73# Phone timer will reset.
#4720* Your handset will be automatically restarted.

Computer Application

In 1950's , Computers were very expensive and were only used by large institutions such as governments and universities. The computers were used for calculating the precise time of spacecraft journey or planning the targests of missiles, or processing Census data.
In 1960's, IBM introduced mainframe computers. then, the use of computer increased rapidly in business organizations. But, they were expensive for general use.
After the introduction of PC's (Personal Computers) in 1870's, size as well as price of computer decreased. So, computers became common to small business or home use. Now, computers are used in many areas, such as :

1. BUSINESS :
Computers are the part of the modern society. Modern business can not survive without computers. In business, computers are used to write letters, keep employee records, communicate with the co-workers, prepare budgets and perform many other functions.

2. Medicine and Health Care :
Computers are extensive used in medicine. It is used for diagnosing diseases, monitoring the condition of patients and keeping the necessary records.
Many innovative medical applications use small, special-purpose computers. For example, pacemakers are computers that operate within the human body and help to maintain heart beat.
Also, laboratory tests such as X-RAY, CT-SCAN etc are performed by computers.

3. Education :
Computers have brought revolution in the field of education. Now, computers are used in school and colleges by students, teachers and many others. People use computers in library to read magazines and journals from the computer terminal rather than searching the shelves for paper organizations.
Teachers use computers as a presentation tool, to explain difficult topics more clearly and easily to their students.
Students use computers to develop their computer projects and to do their mathematical problems.
Computer Assisted Learning (CAL) is used by students to improve knowledge of any subject.

4. Space Technology :
It would be impossible to explore outer space without computers. Computers are used to make accurate calculations for the spacecraft journey to moon, mars etc. The computer is also used to control the artificial satelites to know the weather patterns in earth. Nowadays, the actual damage due to flood, earthquake, etc. in particular area of earth is analyzed using satelite pictures.

5. Engineering
Engineers use computers to design the model of machines, vehicles, bridges, buildings etc. The design made with computers is more accurate and flexible than the design drawn with paper and pencil.
The design of complex structures such as aeroplanes, satelites etc. is almost impossible without computers.

6. Aviation :
The computer is highly used in aviation. Modern aircrafts include sophisticated computerized instruments so that it can communicate with the ground airport atations, identify the status of its parts, fuel and available location in the atmosphere.
Thus, the use of computer has increased security in aviation.

7. Music and Entertainment :
Computers have become a helpful tool for musicians. It helps them to create various electronic notes. Also, the notes can be converted to music graphs. The composer can create the music of many musical instruments using a special keyboard called MIDI Keyboard.
Computers games are the means of entertainment for people of all ages. Computers are heavily used in entertainment industry i.e. television, theater, films, etc. Films are special visual effects to make the contens real. These effects are possible using computers. Computers have also improved cartooning and animations.

8. The Military :
Military or Defense services use computers massively. the actual development of computers are due to military. In 1946, ENIAC (Electrionic Numerical Integrator and Calculator) was created for the U.S. Army. They used ENIAC for calculating accurate targets of missiles.
Now, military uses more advanced computer technology. They use computers to spy the enemy secrets such as enemy location, enemy numbers and their amount of weapons. they also use a special type of missile called "Smart Bomb" which embeds computer within it.

Thursday, October 20, 2011

The Parts Of Computer

The word 'Hardware' refers to the physical parts of a computer. The main parts are the monitor, keyboard, the mouse & CPU or central processing unit, which contains the hard disk. The monitor is also known as the screen or VDU (Vidual Display Unit). It looks like a television screen & displays what we do on the computer. It comes in different size. The actual computer i.e. the part that performs tasks we ask it to do is in a unit holding the CPU, memory & hard disk & floppy disks. It comes in a rectangular box. CPU stands for central processing unit. This could be called the brain of a computer. It performs calculation & manipulates data. The keyboard functions like a typewriter. The computer is given commands by typing them on the keyboard information is then displayed on the monitor. The mouse is a hand-held pointing device. By moving the mouse around on a flat surface, a pointer or arrow on the monitor will made corresponding movements. By clicking, holding & dragging with the mouse various things can be done on the monitor.
The hard disk is a fixed device for permanent storage which stays with in the computer . A hard disk is capable of holding tremendous amounts of information, yet it is only a few inches in width & length. A computer also has a floppy disk drive. It is a slot for the insertion of portable disks, also known as floppy disks.

Uses of computer

Computer, one of the most powerful machine today, is being used everywhere. Let’s discuss the uses of computer on various sectors of our society.
Business and Industry:
The uses of computer in business/offices improve their working efficiency. Record keeping becomes very easy. Information can be searched immediately. The use of computers in industries has improved their efficiency. The cost of production goes down. The quality of products is improved. Unpleasant and hazardous work can be performed by using robots. Working hours of laborers are reduced; they get more leisure.
Health Care:
Computers are also being used for planning and control purposes by health-care professionals. Computer equipment is used to monitor pulse rate, blood pressure and other vital signs. This leads to correct and fast diagnosis. Medical researchers are using computers as a tool in their search for cures of deafly disease like cancer and AIDS.
Education:
Computers are playing an important role in education. Once can get lessons on certain topics, special lectures prepared by experts etc on the screen as many times as he wants until he understands the topic. Computers are working as teachers or helping teachers in educational institutions.
Communication:
Computers are capable of manipulating and transmitting texts at very fast rate. Sitting at home, anybody may do office work, bank transactions, marketing, purchase of shares, reservation of place and bus tickets and so on. Officers and managers can contract any branch office anywhere in the world through the computer network. Text, voice, data and picture can easily be transmitted nowadays using modern communication systems, which heavily depend upon computers. Information is transmitted over long distances through satellites.
Humanities:
In recent years, computers have become popular among people having interests in history, literature, music, graphics, arts and other branches of humanities.
Science and Technology:
Thousands of scientific applications are processed daily, on the computers. One of the most important daily activities is whether forecasting, which involves solution of mathematical equations using worldwide data about air pressure, temperature, humidity and other values.
Recreation and Entertainment:
Our entertainment and pleasure-time have also been affected by computerization. For example;
a) In movies, computer generated graphics give freedom to designers so that special effects and even imaginary character can play a part in making movies, videos, and commercials.
b) In sports, computers compile statistics, sell tickets, create training programs and diets for athletes, and suggest game plan strategies based on the competitor’s past performance.
c) In restaurants, almost every one has eaten food where the clerk enters an order by indicating choices on a rather unusual looking cash register; the device directly enters the actual data into a computer, and calculates the cost and then prints a receipt.
Government
Various departments of the government use computer for their planning, control and law enforcement activities. To name a few traffic, tourism, information and broadcasting, education, aviation and many others.

Types Of Computer

a) On the basis of function/Activity

i) Analog computer
An analog computer is one that measures physical, continuous data such as temperature or pressure that fall along a continuous scale or variance in temperature of pressure. They give approximate result. For example an analog computer connects fuel flow measurements into quantities and price value.
Analog devices are speedometer, Seismograph, Thermometer etc.

ii) Digital Computer
The computer which accepts discrete (discontinuous) data is known as digital computer. Basically digitally computer counts digits which present numbers or letters.
Examples: IBM-PC, IBM compatibles

iii) Hybrid Computer
The data processing device, which uses both continuous and discrete data, is known as Hybrid computer.
Auto flight or Safe flight system is used in flight is known as Hybrid computer.

b) On the basis of brand / Manufacture

i) IBM-PC
The personal computer manufactured by the IBM (International Business Machine) company is known as IBM-PC.

ii) IBM-Compatible
The computers having the same functional characteristic of IBM Company are called IBM compatibles. (Assembled Computer)
iii) Apple/Macintosh
The computer developed & manufacture by Apple Company having different architecture and system known as Apple/ Macintosh computer.

c) On the basis of size / volume

i) Super Computer
Supercomputer are the most powerful and the fastest computer system, are used in weather forecasting, rocket launching, seismology, nuclear physics and so on. Examples: CRAY-1, CRAY X-MP, SX-2, HITAC S300 etc.

ii) Mainframe Computer
A Mainframe is the largest, fastest computer systems of general use having largest storage capacity; more then 100 people can work at the same time. Examples: IBM-1401, IBM-4300 HP9000model 3705/300 & 8705/400

iii) Mini Computer
Minicomputers resemble mainframe computers but they are comparatively small and less expensive.
Examples: IBM-AS/400/b60, HP-900, VAX-8842, Wipro-s68030 v, MIPS-II-52

iv) Micro Computer
A computer, which is based on microprocessor, is called a microcomputer. Types of Microcomputer are: 1. Desktop Computer 2. Laptop Computer 3. Palmtop Computer
d) On the basis of speed/model
i) XT (Extended technology) 8086, 8088 with speed 4.77 MHZ
ii) PC/AT (Personal Computer Advanced Technology) 80286, 80386, 80486. Pentium i, ii, iii, iv
iii) PS/2 (Personal System-2) other types of model from IBM since 1990.

Computer Software

Software is an organised collection of programs, which is responsible to controlling, integrating & managing the hardware components of a computer system to accomplish specific tasks. In other words, the software tellls the computer system what to dom how to do & when to do. For example, software instructs the hardware what to display on the users screen, what kind of input to take from the user. & what kind of output to generate. Thus, Software communicates with the hardware, it organises the control sequences & the hardware carries out the instructions defined by the software.It is an important part of the computer system that is indefinable & the user can not touch it. Generally the software can be classified into two categories :-
System Software
Application Software
System Software
The system software that contributes to the control and performance of the computer system and permits the user to use the system more conveniently is termed as system software. System software is setup programs, which interact with the hardware at a very basic level. They are the basic necessity of a computer system for its proper functioning. System serves at the interface between hardware and the users. System software not only controls the hardware but also provides a platform for other programs to run onto them. Depending upon the functionality, the system software can be classified into two major categories:
1. System management software
2. System development software
1. System management software
System management software, as name implies, is responsible for the management and accurate functioning of the computer system. It includes an integrated system of software that manages the operation of processor, controls the input/output, manages storage resources and provides various support services as the computer executes application programs. This software is available as :
a. Operating system
b. Device drivers software
c. System utility software
a. Operating system
The most important type of system software is the operating system. It is responsible for performing basic tasks such as recognizing input from the keyboard, sending output to the display screen, keeping track of files and directories on the disk, and controlling peripheral devices such as printers and modems. In addition, the operating system provides software platform on which other programs can run. So, every computer has operating system software, which takes care of the effective and efficient utilization of all the hardware and software components of the computer. The examples of an operating system are : MS-DOS, Microsoft windows 98/2000/XP, UNIX, Windows NT, Linux Mac OS.
b. Device drivers
Device drivers are system software, which are responsible for proper functioning of devices. Every device or hardware, whether it is a printer, monitor, mouse, keyboard or modem has a driver software for support. Whenever a new device is added to the computer system, a new device driver must be installed before the device can be used. But device drivers are not independent software; they assist and are assisted by the operating system for the proper functioning of the devices.
C. Utility Software
Utility software performs day to day tasks related to the maintenance of the computer system. This is used to support, improve, expand and secure existing programs and data in the computer system. Certain utility software comes along with the operating system. Some utility software is available for free as per requirement, some of the utilities are purchased from market. Some of tasks are commonly performed by utilities software include formatting of hard disks, or floppy disks, taking backup of files stored on hard disk, on a tape or floppy disk, data recovery, virus protection etc.
2. System development software
System development software consists of system software, which is associated with the development computer programs that the operating system can execute. A programmer needs certain tools to build software, which include an appropriate computer language, a translator to translate a particular language to machine language, etc. All the necessary tools that are required by the programmer are :
1. Programming Language
2. Language translators
1. Programming Language
A programming language is a primary interface of a programmer with a computer a program is an ordered list of instructions that, when executed, causes the computer to behave in a predetermined manner. A programming language includes a series of commands, which are used in development of software. Programming languages are further divided into three categories, namely machine language, assembly language and high level language. Hundreds of programming languages have been developed since the invention of the computer system. Basic, C, C++ are popular high level programming languages.
2. Language Translators
Language translators are system software, which transform the instructions prepared by programmers in a programming language, into a form of 0s and 1s, called machine language, which can be interpreted and executed by a computer system. Language translators are classified into three types.
a. Assembler
b. Interpreter
c. Complier
a. Assembler
An assembler is a type of language translator, which translates an assembly language program (Source Program) into its equivalent machine language program (object program). Compared all they types of programming language, assembly language is the closest to the machine code. It is fundamentally a symbolic representation of machine code called mnemonic code such as ADD for addition, SUB for subtraction etc. However, no matter how close assembly language is to machine code, the computer is still unable to understand it. So, the assembly language program must be translated into machine code 0s and 1s by a separate program called an assembler.
b. Interpreter
An interpreter is another type of language translator, which analyses and executes the source code written in high level language in line by line manner, without looking at the entire program. In other words, an interpreter translates a statement in a program and executes the statement immediately, that is, before translating the next source language statement. The advantage of interpreter is it they can execute a program continuously.
c. Complier
A complier is a type language translator that translates a program code written in high level language into a machine language. The programs written in any programming language needs to be converted to binary form. Therefore, in order to execute the programs, a programmer needs to compile the written programs. As a system program, a complier translates the source code (user written program) into the object code (binary form). The complier looks the entire source code and convert to the machine code.
Application Software
Application software is a set of programs designed to do a specific job for the user such as producing electricity bills, payroll slips or producing bills at the supermarket or business house preparing document. In many cases, users produce the programs according to its own requirements. Such programs are called user programs. But all these programs belong to a common name “Application Software”.
There are millions of application software available for a wide range of applications, raising from simple to complex. Some of the most commonly known application software are word processing, spreadsheet software, database software, graphic software, education software, and entertainment software. The application software is classified into two types:
a. Packaged Software
b. Customized or tailored software
a. Packaged software
Package software is generalized set of programs, which performs specific task for varieties of users. It’s designed to meet the needs of a wide variety of users for particular type of work. MS-word, MS-Excel, MS Access, PowerPoint, etc are the examples of packaged software. Such types of softwares are used in wide range for their common works. It can be used in schools, hospitals airlines, business, business houses etc. for common purpose. There are different types of packaged software that are designed of different purposes. Some of the common packaged software are :
Word processing package
Spreadsheet package
Data Management package
Engineering designing package (CAD, Autocad, CAM)
Computer Graphic Package
Accounting Package (Tally, Fact, Ex’ package)
b. Customized or tailored software
Customized or tailored software is a specialized set up programs, which performs a specific task for the specific individual organization. It is designed to meet the specific requirements of individual or organization. SLC result processing software and telephone bill processing software are good examples of customized software. Such type of software can be developed for other places like hospital, airlines or business houses.
Open Source Software
Open Source Software is the practice of making the source cod for a software product freely available, at no cost, to interested users and developers, even though they were not involved in creating the original product. The distribution of open source software expect and encourage users and outside programmers to examine the code in order to identify problems, and to modify the code with suggested improvements and enhancements. Widely used open source products include the Linux Operating system and Apache web server.

Wednesday, October 19, 2011

Bush Trick In Notepad

Open Your Notepad

Then Type "BUSH HID THE FACTS" or "THIS APP CAN BREAK"

Then Save that file to "Amazing.txt"

Close it and see the trick

Shutdown Computer by notepad

Goto Notepad
Then type the following:

@echo off
msg * Computer shutting down.
shutdown -s -f -t 60 -c "See you later.... Swt drms!!

Then save it to Shutdown.bat and then run it

9/11 trick in Notepad

Goto start, Run then type "notepad"
Type Q33N and then goto Font Setting..
Change the Font to Wingdings and the size to 72.
Now see the magic... Plane attacking twin tower..
http:\\www.justklikme.blogspot.com

What is Computer?

Computer is an advance electronic device which takes raw data as input then processes these data as per given instructions then gives out the rsult and store it for the future use. Computer is used in every field in these modern days of life. computers are used in researches, medical sciences, engineering, astronomy, information technology, entertainment, learning accountancy, agriculture, etc. Due to the speed, accuracy, diligence, versatility, reliability & huge storage capacity the demand of computer is growing rapidly. computers have become a part of modern life. Today's school children carry arround calculating power which would have filled a large room 40 years ago. Computers scientists are now working on the next generation of computers; ones which will have true intelligence. The computer is one of the most powerful & useful electronic devices. The computers are use everywhere. They are used in schools, banks, hotels, hospitals, airports, communication, etc. There is rarely any field where the computer is not used.

Tuesday, October 18, 2011

Minesweeper Trick

Minesweeper:

Minimize the applications... Then open Minesweeper game. Press xyzzy and press shift key for 2 second.. Begin moving your mouse pointer over the square of Minesweeper.. If black pixel is seen in the left top corner of your screen then there is mine. If white pixel is seen then it is safe... Be sure to keep your desktop background other than black of white...
http:\\www.justklikme.blogspot.com

Hearts Trick (Game)

Hearts: Show all the cards

I am warning you to use this steps carefully...

In the Run box type "regedit" and press Enter
Goto ( Hkey_Current_User\ Software \Microsoft \Windows \Current Version \Applets \Hearts ). After that Right-click on the right panel and create a new String value with the name "Sub" .Double click it and open it. Then enter "42" in its value and close the Registry Editor.

Start Hearts and Press Ctrl + Alt + Shift + F12 to show all the cards

Pinball Secrets

Pinball
Get balls after balls by typing "bmax" at the starting of the game...
Get one extra ball by typing "1max" at the starting of the game...
Pinball has a very nice trick that turns on Gravity by typing "gmax" at the starting of the game.
If you want to raise your rank in pinball type "rmax" at the starting of the game...
If you wish to play with the ball holding it with your mouse then type "hidden test" before the starting of the game...
http:\\www.justklikme.blogspot.com

Freecell Secrets

FreeCell: Direct Win
Hold down Ctrl + Shift + F10 while playing, then click Abort.
Now move one card.


FreeCell: Hidden Game Mode
Go to "Game" menu choose "Select Game"
Here you can choose from game mode 1 to 1,000,000. But -1 and -2 will also work (hidden modes)
http:\\www.justklikme.blogspot.com

Qbasic (To Convert Hexadecimal to Decimal)

Declare Sub Hex (H$)
CLS
INPUT "Hexadecimal No"; H$
Call Hex(H$)
END

Sub Hex (H$)
L = Len (H$)
While l>0
Z$= UCASE$(MID$(H$,l,1))
SELECT CASE Z$
CASE "A"
N = 10
CASE "B"
N = 11
CASE "C"
N = 12
CASE "D"
N = 13
CASE "E"
N = 14
CASE "F"
N = 15
CASE ELSE
N = VAL (Z$)
END SELECT
DECI = DECI + N*16^P
P = P+1
L = L -1
WEND
PRINT H$ ; = "DECI"
END SUB

Qbasic (To Convert Decimal no. to Hexadecimal)

Rem Deci into Hexa
Declare Sub Subas(H)
Cls
Input "Enter Decimal"; H
Call Subas(H)
End

SUB Subas(H)
K= H
While K>0
R = K MOD 16
Case Select R
Case 10
B$="A"
Case 11
B$ = "B"
Case 12
B$ = "C"
Case 13
B$ = "D"
Case 14
B$= "E"
Case 15
B$ = "F"
CASE ELSE
B$ = STR$(R)
END SELECCT
Z$ = B$ + Z$
K = K\16
WEND
PRINT "H"; "="; "Z$"
END SUB