computer systems computer generations and types. computer generations 1. vacuum tubes: 1946-1959
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Computer Systems
Computer Generations and Types
COMPUTER GENERATIONS
1. VACUUM TUBES: 1946-1959
COMPUTER GENERATIONS
1. VACUUM TUBES: 1946-1959
2. TRANSISTORS: 1957-1963
COMPUTER GENERATIONS
1. VACUUM TUBES: 1946-1959
2. TRANSISTORS: 1957-1963
3. INTEGRATED CIRCUITS: 1964-1979
COMPUTER GENERATIONS
1. VACUUM TUBES: 1946-1959
2. TRANSISTORS: 1957-1963
3. INTEGRATED CIRCUITS: 1964-1979
4. VERY LARGE-SCALE INTEGRATED (VLSI) CIRCUITS: 1980- PRESENT
SUPERCOMPUTERTERAFLOP: TRILLION CALCULATIONS/SECOND
HIGHLY SOPHISTICATED COMPLEX COMPUTATIONS FASTEST CPUs LARGE SIMULATIONS STATE-OF-THE-ART COMPONENTS EXPENSIVE
MAINFRAME
LARGEST ENTERPRISE COMPUTER 5O MEGABYTES TO OVER ONE GIGABYTE
RAM COMMERCIAL, SCIENTIFIC, MILITARY
APPLICATIONS MASSIVE DATA COMPLICATED COMPUTATIONS
MIPS: Millions of Instructions per secondMIPS: Millions of Instructions per second
MINICOMPUTER
MIDDLE-RANGE 10 MEGABYTES TO OVER ONE GIGABYTE
RAM UNIVERSITIES, FACTORIES, LABS USED AS FRONT-END PROCESSOR FOR
MAINFRAME
DESKTOP OR PORTABLE 64 KILOBYTES TO OVER 128 MEGABYTES
RAM PERSONAL OR BUSINESS COMPUTERS AFFORDABLE MANY AVAILABLE COMPONENTS CAN BE NETWORKED
MICROCOMPUTER
LAPTOPS & SMALLER
LAPTOP (OR NOTEBOOK): Briefcase type package, very portable, can be inexpensive, can connect to other computers or networks
HAND-HELD (OR PALMTOP): Sub-miniature, wireless computer. Growing in sophistication and connectivity
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