Computer Basics



Topics
  • Processor
  • RAM
  • Motherboard
  • Hard Disk
  • Cards
  • Ports
  • BIOS
  • Peripherals
  • Cabinet
  • Troubleshooting

Processor
  • Processor is the brain of your computer.
  • Some key concepts 
    • Clock : In a computer, clock speed refers to the number of pulses per second that sets the tempo for the processor.
    • Cache
    • A small but fast memory area.
    • Levels of cache exists.
    • Bus (FSB and BSB) : Collection of wires connecting different devices.
    • Pipeline : Implementation technique where multiple instructions are overlapped.
  • 32/64 bit processors 
    • The amount of data a processor can process in a clock cycle.
  • Clock speed and overclocking 
    • BUS SPEED x MULTIPLIER = CPU SPEED (Clock)
  • Which processor is faster? 
    • 100MHz x 10.0 = 1000 MHz
    • 133MHz x 7.5 = 997.5 MHz

Some commercially available processors
  • Pentium I-IV
  • Celeron
  • Athlon
  • Duron
  • Cyrix C3
  • Itanium (64 bit)
  • Opteron (64 bit)

Choosing the right Processor
  • How do you pick a processor for your system?
  • Performance & Cost
  • How to measure performance?
    • Clock speed is one measure of computer “power”, but it is not always directly proportional to the performance level. 
    • The type of microprocessor, the bus architecture, and the nature of the instruction set, all make a difference. 
    • examples : P4 3.06 GHz, P4 3.0B GHz, P4 3.0C GHz 
    • Check for bus speed and cache size as well.

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