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Unit 1
- 1. OV 1 - 1Copyright © 2007 Element K Content LLC. All rights reserved.
Personal Computer Components
Personal Computer Components
System Unit Components
Storage Devices
Personal Computer Connection Methods
- 2. OV 1 - 2Copyright © 2007 Element K Content LLC. All rights reserved.
A Typical Personal Computer
System unitSystem unit Display deviceDisplay device
External deviceExternal deviceExternal deviceExternal device
Input devicesInput devices
- 3. OV 1 - 3Copyright © 2007 Element K Content LLC. All rights reserved.
A System Unit
ChassisChassis
Cooling deviceCooling device
Microprocessor
(under cooling device)
Microprocessor
(under cooling device)
Memory chipsMemory chips
Power SupplyPower Supply
PortsPorts
Adapter CardAdapter Card
Disk drivesDisk drives
- 4. OV 1 - 4Copyright © 2007 Element K Content LLC. All rights reserved.
A Display Device
- 5. OV 1 - 5Copyright © 2007 Element K Content LLC. All rights reserved.
An Input Device
- 6. OV 1 - 6Copyright © 2007 Element K Content LLC. All rights reserved.
External Devices
Microphone
Digital camera
Scanner
Speakers
Printer
Network device
External drive
- 7. OV 1 - 7Copyright © 2007 Element K Content LLC. All rights reserved.
A System Board
Expansion slotsExpansion slots
AGP slotAGP slot PortsPorts
CPUCPU
RAM slotsRAM slots
Drive interfacesDrive interfaces
- 8. OV 1 - 8Copyright © 2007 Element K Content LLC. All rights reserved.
CPUs
- 9. OV 1 - 9Copyright © 2007 Element K Content LLC. All rights reserved.
A Sample Memory Module
- 10. OV 1 - 10Copyright © 2007 Element K Content LLC. All rights reserved.
The System Bus
Hard Drive
Controller
Video
Controller
Memory
System Bus
CPU
- 11. OV 1 - 11Copyright © 2007 Element K Content LLC. All rights reserved.
Examples of Storage Devices
- 12. OV 1 - 12Copyright © 2007 Element K Content LLC. All rights reserved.
A Power Supply
Internal viewInternal view
External viewExternal view
Wires from the power supply
to the system board and drives
Wires from the power supply
to the system board and drives
FanFan
Voltage switchVoltage switch
Socket for power cordSocket for power cord
Power switchPower switch
- 13. OV 1 - 13Copyright © 2007 Element K Content LLC. All rights reserved.
A Typical Cooling System for a CPU
FanFan Heat sinkHeat sink
- 14. OV 1 - 14Copyright © 2007 Element K Content LLC. All rights reserved.
An Adapter Card
ConnectorConnector
CircuitryCircuitry
- 15. OV 1 - 15Copyright © 2007 Element K Content LLC. All rights reserved.
A System Board with a Riser Card
REARREAR
FRONTFRONT
Memory slots
PCI/ISA slots on riser
Peripheral
connectors
CPU
- 16. OV 1 - 16Copyright © 2007 Element K Content LLC. All rights reserved.
System Board Form Factors
AT
Baby AT
ATX
microATX
LPX
NLX
BTX
- 17. OV 1 - 17Copyright © 2007 Element K Content LLC. All rights reserved.
A Floppy Disk Drive (FDD)
Front view 3.5-inch floppy disk drive
3.5-inch floppy disk
Rear view of floppy disk drive
Data cableData cable Power cablePower cable
- 18. OV 1 - 18Copyright © 2007 Element K Content LLC. All rights reserved.
A Hard Disk Drive (HDD)
- 19. OV 1 - 19Copyright © 2007 Element K Content LLC. All rights reserved.
Optical Disks and Drives
An internal CD-ROM drive
An external DVD drive
A CD-R disc
- 20. OV 1 - 20Copyright © 2007 Element K Content LLC. All rights reserved.
Optical Disk and Drive Types
CD-ROM
CD-R
CD-RW
DVD-ROM
DVD-R
DVD+R
DVD+R DL
DVD-RW
DVD+RW
- 21. OV 1 - 21Copyright © 2007 Element K Content LLC. All rights reserved.
A Tape Drive
- 22. OV 1 - 22Copyright © 2007 Element K Content LLC. All rights reserved.
Solid State Storage
43mm
CompactFlash
card fits in here
CompactFlash
card fits in here
36mm
USB adapter connects the
CompactFlash reader to the computer
USB adapter connects the
CompactFlash reader to the computer
- 23. OV 1 - 23Copyright © 2007 Element K Content LLC. All rights reserved.
Ports
Enable devices to be connected to a personal computer.
6-pin round
connector
6-pin round
connector
25-pin D-shaped
connector
25-pin D-shaped
connector
15-pin D-shaped
connector
15-pin D-shaped
connector
- 24. OV 1 - 24Copyright © 2007 Element K Content LLC. All rights reserved.
Personal Computer Connections
USB ConnectorUSB Connector
CableCable
- 25. OV 1 - 25Copyright © 2007 Element K Content LLC. All rights reserved.
Serial Connections
25-pin serial port
on a serial device
25-pin serial port
on a serial device
25-pin end of serial cable connects
to modem and 9-pin end
connects to computer’s serial port
25-pin end of serial cable connects
to modem and 9-pin end
connects to computer’s serial port
- 26. OV 1 - 26Copyright © 2007 Element K Content LLC. All rights reserved.
Parallel Connections
Parallel connectorParallel connector
Parallel cableParallel cable
- 27. OV 1 - 27Copyright © 2007 Element K Content LLC. All rights reserved.
USB Connections
Type B connector
connects to USB device
Type B connector
connects to USB device
Type A connector connects to
USB port on the computer
or on a hub
Type A connector connects to
USB port on the computer
or on a hub
- 28. OV 1 - 28Copyright © 2007 Element K Content LLC. All rights reserved.
FireWire Connections
FireWire deviceFireWire device
FireWire portFireWire port
FireWire 6-pin
connector
FireWire 6-pin
connector
- 29. OV 1 - 29Copyright © 2007 Element K Content LLC. All rights reserved.
SCSI Connections
SCSI connectorSCSI connector
SCSI cableSCSI cable
- 30. OV 1 - 30Copyright © 2007 Element K Content LLC. All rights reserved.
PATA Connections
PATA connectorPATA connector
- 31. OV 1 - 31Copyright © 2007 Element K Content LLC. All rights reserved.
SATA Connections
SATA data cableSATA data cable
SATA power cablesSATA power cables
- 32. OV 1 - 32Copyright © 2007 Element K Content LLC. All rights reserved.
Reflective Questions
1. How many of the personal computer components described are
familiar to you?
2. What is the most important component of a computer?