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Chapter FIVE: Computer System

Detailed Notes to follow…..

1.  Components of Computer System (Computer Architecture)

a.  Input Unit

  i.  Keyboard

  ii.  Mouse

  iii.  Trackball

  iv.  Trackpad/Toychpad

  v.  Joystick

  vi.  Light Pen

  vii.  Touch Screen

  viii.  Scanner

  ix.  OCR (Optical Character Reader)

  x.  MICR (Magnetic Ink Character Reader)

  xi.  OMR (Optical Mark Reader)

  xii.  BCR (Bar Code Reader)

  xiii.  Microphone

  xiv.  Digital Camera, Webcam

  xv.  Card Reader

  xvi.  Digitizing Tablet

b.  CPU (Central Processing Unit)

  i.  ALU

  ii.  CU

  iii.  Set of Registers

·  MAR

·  IOR

·  IR

·  PC

·  AR

·  MBR

c.  Memory Unit

  i.  Primary Memory

·  RAM

o  SRAM

o  DRAM

·  ROM

o  PROM

o  EPROM

o  EEPROM

·  Cache Memory

o  L1 Cache

o  L2 Cache

  ii.  Secondary Memory

·  Magnetic Drum

·  Magnetic Tape

·  Magnetic Disk

Ø  Hard Disk

Ø  Floppy Disk

Ø  Zip Disk

Ø  Jaz Disk

Ø  Super Disk

Ø  Winchester Disk

  iii.  Optical Memory

·  CD

Ø  CR-R

Ø  CD-ROM

Ø  CD-RW

·  DVD

Ø  DVD-R

Ø  DVD-ROM

Ø  DVD-RW

·  BD

Ø  BD-R

Ø  BD-ROM

Ø  BD-RW

d.  Output Unit

  i.  Soft Copy Output Unit

·  Monitor

Ø  CRT Monitor

Ø  Flat Panel Monitor

  i.  LED

  ii.  LCD

  iii.  Plasma Display

·  Speaker

·  Projector

  ii.  Hard Cppy Output Unit

·  Printer

Ø  Impact Printer

  i.  Dot Matrix Printer

  ii.  Daisy Wheel Printer

  iii.  Line Printer

Ø  Non-impact Printer

  i.  Inkjet Printer

  ii.  Laser Printer

  iii.  Thermal Wax Printer

·  Plotter

2.  BUS Architecture

a.  Data Bus

b.  Control Bus

c.  Address Bus

3.  Communication Port

a.  Serial Port

b.  Parallel Port

c.  USB Port

d.  SCSI Port

e.  IEEE 1394 Interface

f.  PCI

4.  MODEM

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