The Evolution of Computer

The Evolution of Computer. Lesson 1 CHARLIE C. CATANGUI Instructor.

Objectives. To introduce the evolution of computers; To identify the different improvement in the generation of computer; To determine the different developers of computer system during the evolution phase.

The term computer originally meant a person capable of performing basic numerical calculations with the help of the mechanical computing device. The evolution of computer started way back in 1930’s..

Old abacus, wood beads and frame. Made in early 1919's. ARITAR 1919÷v2 a b.

Abacuses, are often constructed as a bamboo frame with beads sliding on wires, but originally they beans and stones moved in grooves in sand or on tables of wood, stone or metal..

The user of an abacus who slides the beads of the abacus by hand is called an abacist. _____________________________________________ Abacus is an early computing tool. Logarithm was invented by John Napier & slide rules by William Oughtred..

First Generation (Vacuum Tubes) 1939-1954. Computer was expensive and bulky. They used machine language for computing and could solve problem at a time. Computers could not support multitasking activites..

Vacuum Tubes (Electron Tube, Thermionic Valve) is a device used to amplify, switch, modify, or create an electrical signal by controlling the movement of electrons in low-pressure space..

1937 – John V. Atanasoff devised the first digital electronic computer. Atanasoff & Berry came up with ABC prototype in November 1939..

The United States Army’s Ballistic Research Laboratory came up with the Electronic Numerical Integrated and Calculator (ENIAC) in 1946. ENIAC – as the first general purpose electronic computer..

1946 – computers are capable of storing and saving programs of Vonn Neuman..