computer generations lecture

Download Computer generations lecture

Post on 14-Dec-2014

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  • 1. NAME: PUSHPENDER SINGH TANWAR ROLL NO : 29 CLASS : VIII A
  • 2. Time Frame Circuit Components Elements per Component Internal Storage Memory Capacity Data Input Popular Computers and Companies at that time
  • 3. Vacuum Tubes Magnetic Drum 4,000 bits Hard Wire Programs in computers IBM 650, Univac I ENIAC
  • 4. Transistors Magnetic Cores 32,000 bits Punch Cards CDC, GE, IBM
  • 5. Silicon Chips (Integrated circuits)= IC Cores, ICs 128,000 bits Keyboard Entry IBM, NCR, Honeywell
  • 6. Silicon Chips (Large scale integrated circuits)=LSI ICs, LSIs 100 million bits Read programs off disks Apple, Xerox, Texas Instrument, Hewlett- Packard
  • 7. Silicon Chips ( Very Large Integrated Circuits) VLSI LSIs, VLSIs Unlimited CdRom, Optical Disk NEC, Packard Bell, Compaq, Other Clones