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.
