Chapter 2. Understanding Functions and Operating of Various Information And Communication Technology Devices

A. MULTIPLE CHOISE

1. A (Every input that is received by a computer)

2. C (The computer processing result)

3. B (User-input-CPU-output-user)

4. B (base-2 number system)

5. E (0 and 1)

6. E (8)

7. C (Speaker)

8. B (Control Unit)

9. A (LAN)

10. C (Ring topology)

B. ESSAY

1. In ASCII code by what code is letter W represented ?

The letter "W" is represented by the number code 87.

2. Name and explain all supporting devices inside a CPU.

A processing device (Central Processing Unit/CPU) is a centre to process and to control every data processing. A processing device consist of the control Unit (CU), the Arithmetic Logic Unit (ALU), and the memory.

           @ Control unit is to trnslate commands or intructions in a series and then continues them to the enteri computer parts. This part is how the processor controls the entire computer operation.

          @ Aritthemic Logic Unit (ALU) is to process data by adding, substracting, comparing, and using logical formulas.

          @ Memory is to collect or to store data to run an application program. The capability depens on the memory capacity, which is stated in Byte, KByte, MByte, and GByte unit.

3. What is the abbrevation and the function of ROM ?

The abbreviation ROM is Read Only Memory.

The function of ROM is to savw computer operation program , such as BIOS and booting.

4. Name three example of network interface card.

Example of network interface card , such as Ethernet , Arcnet , and Token Ring.

5. Name several cables that use on a wired network.

@ UTP Cable (UNshielded Twisted Pair)

@ STP Cable (Shielded Twistwd Pair)

@ CoaxcialCable

@ Optical Fiber-