Computer Generations
Key for Computer Generations
• Time Frame
• Circuit Components
• Elements per Component
• Internal Storage
• Memory Capaci...
First Generations 1951- 1958
• Vacuum Tubes
• Magnetic Drum
• 4,000 bits
• Hard Wire Programs in computers
• IBM 650, Univ...
Second Generation 1959-1964
• Transistors
• Magnetic Cores
• 32,000 bits
• Punch Cards
• CDC, GE, IBM
Third Generation 1965-1974
• Silicon Chips (Integrated circuits)= IC
• Cores, IC’s
• 128,000 bits
• Keyboard Entry
• IBM, ...
Fourth Generation 1975-1989
• Silicon Chips (Large scale integrated
circuits)=LSI
• IC’s, LSI’s
• 100 million bits
• Read ...
Fifth Generation 1990-present
• Silicon Chips ( Very Large Integrated Circuits)
VLSI
• LSI’s, VLSI’s
• Unlimited
• CdRom, ...
Information is Power
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Computer generations lecture

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Computer generations lecture

  1. 1. Computer Generations
  2. 2. Key for Computer Generations • Time Frame • Circuit Components • Elements per Component • Internal Storage • Memory Capacity • Data Input • Popular Computers and Companies at that time
  3. 3. First Generations 1951- 1958 • Vacuum Tubes • Magnetic Drum • 4,000 bits • Hard Wire Programs in computers • IBM 650, Univac I • ENIAC
  4. 4. Second Generation 1959-1964 • Transistors • Magnetic Cores • 32,000 bits • Punch Cards • CDC, GE, IBM
  5. 5. Third Generation 1965-1974 • Silicon Chips (Integrated circuits)= IC • Cores, IC’s • 128,000 bits • Keyboard Entry • IBM, NCR, Honeywell
  6. 6. Fourth Generation 1975-1989 • Silicon Chips (Large scale integrated circuits)=LSI • IC’s, LSI’s • 100 million bits • Read programs off disks • Apple, Xerox, Texas Instrument, Hewlett- Packard
  7. 7. Fifth Generation 1990-present • Silicon Chips ( Very Large Integrated Circuits) VLSI • LSI’s, VLSI’s • Unlimited • CdRom, Optical Disk • NEC, Packard Bell, Compaq, Other Clones
  8. 8. Information is Power

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