Name: ____________________
Class: ____________
The Components of System Unit
1. Motherboard can also be called as main board or system board .
2. The most basic function of the PC power supply is to convert AC power to DC
power.
3. The detailed instructions needed for system start-up are stored in ROM BIOS.
4. What are expansion slots?
Sockets on the motherboard that can hold an adapter card
5. List three different types of expansion slots:
ISA, AGP, PCI
6. Name three common types of adapter cards:
Network card, Display card, Sound card
7. Name the three bus types:
Data bus, Address bus, Control bus
8. What does BIOS stand for?
Basic Input Output System
9. What does ROM stand for?
Read Only Memory
10. Define volatile as it applies to RAM:
Lose memory when power is off
11. Give 4 basic operations of a machine cycle.
Fetching, Decoding, Executing and Storing
12. Gigabyte, GB = 1,073,741,824 bytes
13. What differentiates RAM from ROM?
RAM is volatile (temporary) memory while ROM is nonvolatile
(permanent) memory
14. What special characteristic do EPROM, EEPROM and Flash ROM have?
Permanent memory that can be electrically erasable and rewritten and
usually hold the start up program for the computer
15. Give two basic units in CPU: Control Unit, Arithmetic Logic Unit.
16. System Clock is used to control the timing all computer operations in CPU.
17. Define memory caching:
Memory that holds frequently used data and instruction for quick access
18. Name 3 common ports in system unit:
Serial port, Parallel port and USB port
CIM6400 CTNW (2004/05)
Worksheet 2 (Answer)
P.1