Evolution of computers and PROBLEMS

Jul 7th, 2015
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Colorado State University
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Evolution of computers In the early years, before the computer was invented, there were several inventions of counting machines: I. 200BC- Chinese Abacus II. 500BC- Egyptian Abacus III. 1620- Napier’s Bone (John Napier) IV. 1653- Pascaline (Blaise Pascal) V. 1673- Leibniz’s (Gottfried Wilhelm Von Leibniz) … And so on.

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Evolution of computersIn the early years, before the computer was invented, there were several inventions of counting machines:I. 200BC- Chinese AbacusII. 500BC- Egyptian AbacusIII. 1620- Napiers Bone (John Napier)IV. 1653- Pascaline (Blaise Pascal)V. 1673- Leibnizs (Gottfried Wilhelm Von Leibniz) And so on.First generation (1940-1956)I. Huge, slow, expensive and often unreliable.II. Used a vacuum tube. (In a computer, a vacuum tube which is an electronic tube about the size of light bulbs was used as the internal computer components. Thousands of them were used.)III. Can calculate 1000 Addition per second.IV. 1940s-Presper Eckert and William Mauchly built the ENIAC (Electronic Numerical Integrator and Computer).V. 1950s- Eckert and Mauchly built the UNIVAC (Universal Automatic Computer).PROBLEMS:I. The vacuum tubes generated a great deal of heat causing many problems in regulation and climate control.II. The tubes burnt out frequently.III. People operating the computer didnt know that the problem was in the programming machine.Second generation (1956-1963)I. Transistors were smaller than vacuum tubes.II. They needed no warm up time.III. Consumes less energy.IV. Generated much less heat.V. Faster and more reliable.VI. Famous computer scientists were:John BardeerWalter Houser BrattainWilliam ShockleyThird generations (1964-1971)I. The IBM 370 series were introduced in 1964. It came in several models and sizes. It was used

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