Generations of Computers
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>>> GENERATIONS OF COMPUTER <<< ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 1. First Generation (1946-1959) : In first generation vaccum tubes were used for circuitry and magnetic drums for memory. They used the "Stored Program Concept" and they were very large in size taking up the entire rooms and generating a lot of heat. Machine languages were used for giving the instructions. Examples: ENIAC (Electronic Numerical Integrator And Calculator) was the first electronic computer developed. EDVAC: Electronic Discrete Variable Automatic Computer EDSAC: Electronic Delay Storage Automatic Computer UNIVAC-I: The Universal Automatic Computer 2. Second Generation (1959-1965) : This generation using the transistor were cheaper, consumed less power, more compact in size, more reliable and faster than the first generation machines made of vaccum tubes. In this generation, magnetic cores were used as primary memory and magnetic tape and magnetic disks as secondary storage devices. In this generation assembly language and high level programming language like FORTRAN, COBOL were used. There were Batch processing and Multiprogramming Operating system used. Examples: IBM 1620,IBM 7094, CDC 1604, CDC 3600, UNIVAC 1108 3. Third Generation (1965-1971) : The development of the integrated circuit(I.C) was the hallmark of the third generation of computers. A single I.C has many transistors, resistors and capacitors along with the
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brief history of generations of computers
Transcript of Generations of Computers
>>> GENERATIONS OF COMPUTER
