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G10 - Unit 3 - Hardware (End of Unit test)

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Last updated 8 months ago
23 questions
Answer all the questions.
2
2
5
9
12
1
1
1
1
1
1
5
2
8
2
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3
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7
3
2
6
Question 1
1.

Which of the following are examples of an input device? (select all correct options)

Question 2
2.

Which of the following are examples of an output device? (select all correct options)

Question 3
3.

Match the five output devices with five descriptions.

Draggable itemarrow_right_altCorresponding Item
Laser printer
arrow_right_alt
Droplets of ink are propelled onto paper.
2D cutter
arrow_right_alt
Flat panel display that uses the light modulating properties of liquid crystals.
Inkjet printer
arrow_right_alt
2D High-powered laser that uses the X-Y plane cutter.
LCD screen
arrow_right_alt
Flat panel display that uses an array of light
emitting diodes as pixels.
LED screen
arrow_right_alt
Electrically charged powdered ink is transferred onto paper.
Question 4
4.

a) Name three buses used in the von Neumann architecture. [3]
b) Describe the function of each named bus. [3]
c) Describe how bus width and clock speed can affect computer performance. [3]

Question 5
5.
Complete the following paragraph by drag and dropping the terms provided:

The CPU ____________ data and instructions required for an application and temporarily stores them in the _______________________________________ until they can be processed.
The _________________________ is used to hold the address of the next instruction to be executed. This address is copied to the __________________________________ using the ________________ .
The contents at this address in RAM are stored in the _______________________________. Each instruction is then ____________ and finally _____________ by sending out ____________________using the ________________ .
Any calculations carried out are done using the ____________________________________. During any calculations, data is temporarily held in a special purpose register known as the ______________________ .
Other Answer Choices:
memory address register (MAR)
memory data register (MDR)
program counter (PC)
fetches
arithmetic and logic unit (ALU)
control signals
decoded
address bus
accumulator (ACC)
control bus
executed
current instruction register (CIR)
Question 6
6.

Which is an example of an embedded system?

Question 7
7.

How do embedded systems differ from general-purpose computers?

Question 8
8.

Embedded systems are commonly used in consumer electronics like microwaves and washing machines.

Question 9
9.

What is the main function of a CPU?

Question 10
10.

What unit measures CPU speed?

Question 11
11.

What is a benefit of a multi-core CPU?

Question 12
12.

A company is developing a new games console. The console games will be stored on a ROM chip once the program to run the new game has been fully tested and developed.

i Give two advantages of putting the game’s program on a ROM chip. [2]
ii The manufacturers are also using RAM chips on the internal circuit board. Why have they done this? [1]
iii The games console will have four USB ports. Apart from the need to attach games controllers, give reasons why USB ports are incorporated. [2]

Question 13
13.

During development of the games console in question 12, the plastic parts are made by a 3D printer. Give two reasons why the manufacturer would use 3D printers.

Question 14
14.

An air conditioning unit in a car is being controlled by a microprocessor and a number of sensors.

a) Describe the main differences between control and monitoring of a process. [2]
b) Describe how the sensors and microprocessor would be used to control the air conditioning unit in the car. Name at least two different sensors that might be used and explain the role of positive feedback in your description. [6]

Question 15
15.

Which of these are characteristics of RAM? (select all correct options)

Question 16
16.

What are features of ROM? (select all correct options)

Question 17
17.

Which aspects differentiate RAM from ROM? (select all correct options)

Question 18
18.

Describe three differences between MAC addresses and IP addresses.

Question 19
19.

Explain each of the following terms:
a) Network interface card (NIC)
b) Router

Question 20
20.

A zoo has an information point.
» Visitors use a menu to select information about animals.
» The menu includes 500 different animals.
» The information is provided only using high definition video with an audio track.

a) State one input device that could be used for the information point. [1]
b) The output is shown on a monitor. State one other output device that could be used for the information point. [1]
c) The video files are stored at the information point. State one secondary storage device that could be used. [1]
d) The zoo decides to introduce Quick Response codes in different places in the zoo. These provide further information about the animals. Describe how customers obtain the information from the Quick Response codes. [4]

Question 21
21.

Convert -88 into a binary number using the two’s complement format.
Explain or show your working.

Question 22
22.

Convert 88 to a hexadecimal number format.

Question 23
23.

Name the three components of data packets and the kind of information contained in each.