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Computer Science > Computer Systems > Flashcards

Computer Systems Flashcards

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1
Q

What is an actuator?

A

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

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2
Q

What is the motherboard?

A

The main printed circuit board (PCB) in a computer

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3
Q

What are the order of bytes.

A

Byte, kilobyte, megabyte, gigabyte, terabyte.

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4
Q

What is an output device?

A

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

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5
Q

What is the size of a terabyte?

A

1000 gigabytes.

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6
Q

What is the difference between hardware and software?

A

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.

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7
Q

Give examples of output devices.

A

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

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8
Q

What is the size of a byte?

A

8 bits.

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9
Q

What does (PCB) stand for?

A

Printed circuit board.

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10
Q

What is the role of the cooling fans?

A

To keep the inside of the computer cool.

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11
Q

What is the size of a gigabyte?

A

1000 megabytes.

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12
Q

What is the size of a megabyte.

A

1000 kilobytes.

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13
Q

What is a bit?

A

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

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14
Q

Give examples of assistive technology.

A

Braille keyboards, screen reader software, automatic captioning software.

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15
Q

What is a computer?

A

Machines that handle and process data.

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16
Q

What is assistive technology?

A

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

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17
Q

What is the role of a CPU?

A

For executing instructions and processing daata.

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18
Q

What are examples of hardware?

A

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

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19
Q

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

A

To supply power to the other pieces of hardware.

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20
Q

What does a circuit that has been switched on represent?

A

The digit 1.

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21
Q

What is the difference between data and information?

A

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

22
Q

What is the size of a kilobyte?

A

1000 bytes.

23
Q

What is a dedicated computer?

A

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

24
Q

What does CPU stand for?

A

Central processing unit.

25
Q

What is an input device?

A

Any device that sends data to a computer.

26
Q

What does a circuit that has been switched off represent?

A

The digit 0.

27
Q

Give examples of data.

A

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

28
Q

Suggest many input devices that can be found in shops.

A

Barcode scanners, card readers, touchscreens.

29
Q

Give examples of input devices.

A

Keyboards, computer mice, scanners, cameras and microphones.

30
Q

What is the size of a nibble?

A

4 bits.

31
Q

What does “ALU” stand for?

A

Arithmetic logic unit.

32
Q

What does “CU” stand for?

A

Control unit

33
Q

What is the role of the arithmetic logic unit?

A

To perform calculations.

34
Q

What is the role of the control unit?

A

To control the flow of data.

35
Q

What does the memory do?

A

The memory holds the programs data and instructions.

36
Q

What does the registers do?

A

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

37
Q

What does the processing power of the CPU depend on?

A

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

38
Q

What is meant by clock speed?

A

How quickly a CPU can process instructions.

39
Q

What is the fetch decode execute cycle?

A

How a CPU carries out an instruction.

40
Q

What is volatile memory?

A

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.

41
Q

What is non volatile memory?

A

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

42
Q

What does (RAM) stand for?

A

Random Access Memory.

43
Q

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

A

RAM is volatile and ROM is non-volatile.

44
Q

What does (ROM) stand for>

A

Read only memory

45
Q

What can ROM only do?

A

It can only be read from and no written to.

46
Q

What is the use of secondary storage?

A

To keep programs and data stored on your computer permanently.

47
Q

What is primary storage?

A

The memory that the CPU can access very quickly.

48
Q

What is secondary storage?

A

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

49
Q

What does (HDD) stand for?

A

Hard disk drive.

50
Q

What does (SSD) stand for?

A

Solid State Drives.

51
Q
A

Computer Science (8 decks)

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