Chapter 4

Discovering Computer 2011 Living in a Digital World Answer

Page 247-248

True / False

1.   True

2.   False

3.   True

4.   True

5.   False

6.   True

7.   True

8.   True

9.   False

10. False

11. False

12. False

Multiple Choice

1. B . CPU

2. B . arithmetic logic unit

3. B.  registers

4. B . massively parallel processing

5. C . firmware

6. B . port replicator

7. A . docking station

8. D . front side bus

Matching

1. h

2. a

3. f

4. b

5. d

6. e

7. g

8. c

9. i

10. j

Short Answer

1. What are two types of designs of Tablet PCs?
Tablet PCs come in two basic designs: convertible and slates.

- What are the differences in the designs of the two types of Tablet PCs?

Convertibles are similar to traditional laptop computers except for the screen which can open to resemble a monitor, swivel 180 degrees and fold back onto the keyboard.

Slates do not have integrated keyboards and therefore rely more heavily on entering data through the stylus. Docking stations and keyboards are available for slates, but may need to be purchased separately.

2. What is the motherboard?

Motherboard  is the main circuit board of the system unit.

- What is a computer chip?
Computer chip is a small piece of semiconducting material on which the integrated circuit are etched.

3.  What are the four basic operations in a machine cycle?

The four basic operations of a machine cycle is fetching, decoding, executing, storing.

- What are some functions of registers?

Register functions include storing thelocation from where an instruction was fetched,storing an instruction while the control unitdecodes it, storing data while the ALU computesit, and storing the results of a calculation.

4.  What types of devices might be Bluetooth enabled?

Computers, peripherals, smart phones, PDAs, mobile phones, laptop, and tablet

- Describe three ways in which a computer can become Bluetooth enabled !

A computer can become Bluetooth enabled by purchasing a Bluetooth wireless port adapter, Bluetooth PC Cards and ExpressCard modules for traditional notebook computers and Tablet PCs, and Bluetooth cards for smart phones and PDAs.

5.  What is compressed air used for with regards to caring for your computer?

Compressed air can be used to removes dust andlint from difficult-to-reach areas and removes sticky liquid spilled on keyboards.

- How should you prepare for cleaning your computer?

Before cleaning a computer, turn it off and unplug it from any electrical source.

Disconnect all cables from the port. Use compressed air to blow away dust on the computer opening. Then wipe the case of the computer using antistatic wipe, use cleaning solution and a soft cloth to clean the computer screen.

Prepare also antistatic wristband, vacuum cleaner, and antistatic wipe to clean the inside of the computer.
If you are not comfortable cleaning the inside of your computer, call professional to do it for you.