The document presents information on the five generations of computers from 1951 to the present. The first generation used vacuum tubes and magnetic drums for storage. The second generation saw the introduction of transistors replacing vacuum tubes. The third generation brought integrated circuits and higher memory capacity. The fourth generation included large scale integrated circuits and the ability to read programs from disks. The fifth generation features very large scale integrated circuits and unlimited storage using technologies like CDROMs and optical disks.

1. PRESENTATION
OF
INFORMATION TECHNOLOGY
TOPIC
Computer Generations
Name :- Muhammad Bakhtiar
Registration No :- 1421-315315

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. First Generations 1951- 1958
• Vacuum Tubes
• Magnetic Drum
• 4,000 bits
• Hard Wire Programs in computers
• IBM 650, Univac I
• ENIAC

4. Second Generation 1959-1964
• Transistors
• Magnetic Cores
• 32,000 bits
• Punch Cards
• CDC, GE, IBM

5. Third Generation 1965-1974
• Silicon Chips (Integrated circuits)= IC
• Cores, IC’s
• 128,000 bits
• Keyboard Entry
• IBM, NCR, Honeywell

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. 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. Information is Power
Thankyou!