1.2

Question 1

processor

Answer 1

main role is to mange the functions of a computer system by processing data and instructions. (cpu)

Question 2

motherboard

Answer 2

is the main circuit of a computer on which components such as the cpu and rom are connected too. (contains PCI slots for expansions cards and ports

Question 3

power supply unit / psu

Answer 3

converts electricity from ac to dc which the system can use

Question 4

volatile / non volatile

Answer 4

volatile= temporary(data lost whenever pc turns off

non volatile= saves the data even when not being powered on/ long term stored

Question 5

random access memory (RAM)

Answer 5

RAM is volatile storage that stores all programs that are currently running. Also part of the operating system to be accessed by the cpu

Question 6

read only memory (ROM)

Answer 6

ROM is non volatile storage that cannot be changed. ROM stores the boot program/ BIOS for when the computer is switched on.
The BIOS then loads up the operating system.

Question 7

Cache memory

Answer 7

cache memory is volatile storage that stores data that is frequently accessed it is very quick to access because it is closer to the cpu and ram etc

Question 8

Secondary storage.
Magnetic storage

Answer 8

most common form of secondary storage
floppy disk is obosolete and all replaced by solid state drives

Question 8

magnetic storage charectisitics

Answer 8

large capactiy / cheaper then solid state
not durable and portable
relatively quick access speeds but slower than solid state drive

Question 9

secondary storage
optical storage

Answer 9

uses a laser to project beams of light into a spinning disc allowing it to read date from a cd dvd or blu ray

make it slowest storage

traditionally internal (disk drives) external can be bought from devices such as laptops

Question 10

optical storage advantages

Answer 10

thin and very portable

Question 11

optical storage disadvantage

Answer 11

low capacity

not durable and very fragile break or scratch easily

slowest access speeds

Question 12

SCSI / small computer interface

Answer 12

is a protocol for attaching external devices to a computer system

Question 13

graphics card

Answer 13

proccesses graphical data and converts it into a displayable output on a monitor

Question 13

SAS / serial attached SCSI

Answer 13

improved version of SCSI that enables many more external devices to be connected at the same time to a computer system

Question 14

sound card

Answer 14

sound card converts analogue sound waves into digital data binary when inputting audio through a microphone

Question 15

network interface card( NIC)

Answer 15

allows computers to connect to the internet and enables them to transfer data to other computers

Question 16

fibre channel card

Answer 16

transfers data between servers across a network
allows quick transfer speeds and is primality used to connect data storage to servers in a large data centre

Question 17

ports: usb

Answer 17

connect storage devices such as usb sticks or external hard drives. connects input devices etc

Question 18

firewire port

Answer 18

transfers data at a high speed from devices such as camcorders external hard drives

Question 19

sd port

Answer 19

enables data from an sd card to be transferred from a device like a camera to the computer

Question 20

ethernet port

Answer 20

connects computers to network devices such as a modem or router allowing access to the internet

Question 21

Micro SD port

Answer 21

allows data from a micro sd card to be transferred from devices such as smart phones tables and handheld games to a computer

Question 21

SATA port

Answer 21

allows data transfer to external HDD or SDD or optical drives