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Upgrading and Repairing PCs. Chapter 2: PC Components, Features, and System Design. What is a PC?. The definition of “IBM Compatible” or “Clone” Who controls Hardware and Software? Microsoft was free to sell their OS (DOS) to anyone, making IBM clones seemingly identical to their competition.

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upgrading and repairing pcs

Upgrading and Repairing PCs

Chapter 2:

PC Components, Features, and System Design

what is a pc
What is a PC?
  • The definition of “IBM Compatible” or “Clone”
  • Who controls Hardware and Software?
  • Microsoft was free to sell their OS (DOS) to anyone, making IBM clones seemingly identical to their competition
system types
System Types
  • 8 Bit 8088
  • 16 Bit 286/386SX
  • 32 Bit 386DX/486
  • 64 Bit Pentium/Pentium Pro
  • PC/XT systems
  • AT systems
system components
System Components
  • Motherboard
  • Processor
  • Memory (RAM)
  • Case
  • Power Supply
  • Disk Drives
  • Keyboard and Mouse
system components5
System Components
  • Video Card
  • Sound Card
  • Monitor (Display)
  • Speakers
  • Modem
the motherboard
The Motherboard
  • Processor Socket
  • Chipset
  • Level 2 cache
  • Memory Sockets
  • Bus Slots
  • CPU “Central Processing Unit”
  • The “Brain” or “Engine” of the Computer
  • Reads Instructions (commands) from memory then executes them
  • One of the most expensive, yet smallest components
  • RAM (Random Access Memory)
  • Requires power to maintain storage
  • ROM (Read Only Memory)
  • Doesn’t require power to maintain storage
  • SIMM (Single Inline Memory Module)
  • DIMM (Dual Inline Memory Module”
case and power supply
Case and Power Supply
  • The shell of your computer
  • Protects and directs air flow
  • Different “Form Factors”
  • Power Supply converts AC into DC
  • Important yet often over looked
disk drives
Disk Drives
  • Hard Disk (Fixed Disk) - primary storage area for computer. Analogous to a filing cabinet
  • Floppy Disk- used for storing and exchanging small files
  • CD-ROM Drives- Holds greater amounts of data and are faster than floppies, yet slower than hard disks
keyboard and mouse
Keyboard and Mouse
  • Many kinds of keyboards
  • Only input device available prior to the invention of the GUI (graphical user interface)
  • After the GUI, mice followed
  • “Point and Click”
video card
Video Card
  • Chipset
  • Video Ram
  • DAC (Digital to Analog Converter)
  • BIOS
  • Popular upgrade component, especially for gaming
sound card and speakers
Sound card and Speakers
  • Also popular upgrade components
  • Popular for home recording
  • Game Port
  • Many high quality home PC speaker systems. Can rival home stereos
  • Similar to a high quality television
  • Video card send its memory contents to monitor
  • DAC chip