Computer Hardware

Question 1

What are Peripheral Devices

Answer 1

A peripheral device is a device that connects to the computer in some way to give a computer additional functionality

Question 2

True or False: You need peripheral devices for your computer to run

Answer 2

False

Question 3

Peripheral Devices can be 3 things list them

Answer 3

• output
• input
• external storage

Question 4

Input does what

Answer 4

send info to the computer system

Question 5

Output does what

Answer 5

Sends info out/from the computer system

Question 6

External Data does what

Answer 6

stores data

Question 7

MP3 song is how much

Answer 7

50 MB

Question 8

SD movie is how much

Answer 8

100 -500MBs

Question 9

Word Doc is how much

Answer 9

20KBs+

Question 10

Storage: Floppy Disk 51/4 inch

Answer 10

<500KB

Question 11

Storage: Floppy Disk 3 1/2 inch

Answer 11

1.44MB

Question 12

Storage: HDD

Answer 12

1TB-4TB

Question 13

Storage: CD

Answer 13

700MB

Question 14

Storage: SSD

Answer 14

250GB - 1TB

Question 15

Storage: DVD

Answer 15

4GB

Question 16

Storage: Blu-ray single layer

Answer 16

25GB

Question 17

Storage: Blu-Ray double layer

Answer 17

50GB

Question 18

List the three types of computer systems

Answer 18

• Desktop device
• mobile device
• server

Question 19

define desktop device

Answer 19

Designed for use at a single location on or near a desk or table due to its size and power requirements

Question 20

define mobile device

Answer 20

Any computing device designed principally for portability.

Question 21

define server

Answer 21

its purpose is to manage network resources

Question 22

list all the computer hardware components

Answer 22

-CPU – Central Processing Unit
-RAM – Random Access Memory
-HDD – Hard Disk Drive / SSD – Solid State Drive
-Motherboard
-PSU – Power supply Unit

Question 23

define CPU & what is it measured in?

Answer 23

Central Processing Unit

• The CPU is known as the brain of the computer. The CPU is responsible for processing instructions.

Ghz – gigahertz

Question 24

list and define the 3 components of a CPU

Answer 24

Control unit: directs or coordinates the operations of the processor.

Arithmetic logic unit (ALU): performs the arithmetic and logic operation for the CPU

Register: random access memory used by the processor for fast access to instructions or calculations

Question 25

define RAM

Answer 25

RAM is Primary Memory It is very fast memory, used for quick access. It is Volatile (when the power is cut, all data on the RAM is wiped)

Question 26

define HDD

Answer 26

It is Volatile (when the power is cut, all data on the RAM is wiped) It is Non-Volatile (when the power is cut, data is NOT wiped)

Question 27

define SSD

Answer 27

A SSD a type of mass storage device similar to a hard disk drive (HDD). (Secondary, Permanent storage)

Question 28

define motherboard

Answer 28

The main circuit board of the computer. All of the other hardware components attach to the motherboard.

Question 29

define the PSU

Answer 29

The PSU supplies power to the computer

Question 30

Define OS

Answer 30

An OS manages the computers software and hardware. It also allows the user to communicate with the computer.

Question 31

fucntions of a OS

Answer 31

- Provision of User Interface - Management of system resources - Management of security and access rights - Running system and user applications