Computer Systems

Question 1

What is an actuator?

Answer 1

An output device that moves when it receives a signal from the computer.

Question 2

What is the motherboard?

Answer 2

The main printed circuit board (PCB) in a computer

Question 3

What are the order of bytes.

Answer 3

Byte, kilobyte, megabyte, gigabyte, terabyte.

Question 4

What is an output device?

Answer 4

A piece of hardware that receives data from the computer and returns the processed data back to you.

Question 5

What is the size of a terabyte?

Answer 5

1000 gigabytes.

Question 6

What is the difference between hardware and software?

Answer 6

Hardware is the physical parts that make up the computer and softwares are the programs that run on a computer in order for you to use it.

Question 7

Give examples of output devices.

Answer 7

Monitors, displays, printers, projectors, headphones and speakers.

Question 8

What is the size of a byte?

Answer 8

8 bits.

Question 9

What does (PCB) stand for?

Answer 9

Printed circuit board.

Question 10

What is the role of the cooling fans?

Answer 10

To keep the inside of the computer cool.

Question 11

What is the size of a gigabyte?

Answer 11

1000 megabytes.

Question 12

What is the size of a megabyte.

Answer 12

1000 kilobytes.

Question 13

What is a bit?

Answer 13

The smallest unit of data that a computer can process or store.

Question 14

Give examples of assistive technology.

Answer 14

Braille keyboards, screen reader software, automatic captioning software.

Question 15

What is a computer?

Answer 15

Machines that handle and process data.

Question 16

What is assistive technology?

Answer 16

Technology/devices that have been designed to help people with certain disabilities.

Question 17

What is the role of a CPU?

Answer 17

For executing instructions and processing daata.

Question 18

What are examples of hardware?

Answer 18

Mouse, CPU, Motherboard, computer keyboard, hard drive, monitor and graphics processing unit.

Question 19

What is the role of a power supply in a computer?

Answer 19

To supply power to the other pieces of hardware.

Question 20

What does a circuit that has been switched on represent?

Answer 20

The digit 1.

Question 21

What is the difference between data and information?

Answer 21

Data is information that has no context but becomes information when you add meaning.

Question 22

What is the size of a kilobyte?

Answer 22

1000 bytes.

Question 23

What is a dedicated computer?

Answer 23

A computer designed to handle a single task and only do that task.

Question 24

What does CPU stand for?

Answer 24

Central processing unit.

Question 25

What is an input device?

Answer 25

Any device that sends data to a computer.

Question 26

What does a circuit that has been switched off represent?

Answer 26

The digit 0.

Question 27

Give examples of data.

Answer 27

Monthly bills of a person, number of students in a class, number of hours spent on something.

Question 28

Suggest many input devices that can be found in shops.

Answer 28

Barcode scanners, card readers, touchscreens.

Question 29

Give examples of input devices.

Answer 29

Keyboards, computer mice, scanners, cameras and microphones.

Question 30

What is the size of a nibble?

Answer 30

4 bits.

Question 31

What does "ALU" stand for?

Answer 31

Arithmetic logic unit.

Question 32

What does "CU" stand for?

Answer 32

Control unit

Question 33

What is the role of the arithmetic logic unit?

Answer 33

To perform calculations.

Question 34

What is the role of the control unit?

Answer 34

To control the flow of data.

Question 35

What does the memory do?

Answer 35

The memory holds the programs data and instructions.

Question 36

What does the registers do?

Answer 36

They hold data and instructions that are about to be used by the CPU.

Question 37

What does the processing power of the CPU depend on?

Answer 37

How many cores it has pr how fast it can process instructions.

Question 38

What is meant by clock speed?

Answer 38

How quickly a CPU can process instructions.

Question 39

What is the fetch decode execute cycle?

Answer 39

How a CPU carries out an instruction.

Question 40

What is volatile memory?

Answer 40

A type of memory that stores its data only while the device is powered but erases it as soon as the computer is switched off.

Question 41

What is non volatile memory?

Answer 41

A type of memory that remains in a computer even after the system shuts off.

Question 42

What does (RAM) stand for?

Answer 42

Random Access Memory.

Question 43

What is the difference between (RAM) and (ROM)?

Answer 43

RAM is volatile and ROM is non-volatile.

Question 44

What does (ROM) stand for>

Answer 44

Read only memory

Question 45

What can ROM only do?

Answer 45

It can only be read from and no written to.

Question 46

What is the use of secondary storage?

Answer 46

To keep programs and data stored on your computer permanently.

Question 47

What is primary storage?

Answer 47

The memory that the CPU can access very quickly.

Question 48

What is secondary storage?

Answer 48

Secondary storage is non volatile. It is where things like applications, user files and the operating system are stored when not in use.

Question 49

What does (HDD) stand for?

Answer 49

Hard disk drive.

Question 50

What does (SSD) stand for?

Answer 50

Solid State Drives.