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OCR IT Unit 1 > 1.2 Computer Components > Flashcards

1.2 Computer Components Flashcards

1
Q

What is the role of the CPU?

A

Manage functions of the computer system by processing data and instructions

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2
Q

What is the role of the motherboard?

A

Main circuit board of a computer, connected to other components such as RAM and CPU and contains PCI slots for expansion cards and ports.

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3
Q

What is the role of PSU?

A
  • receives power from the mains power supply and converts it into a current which the computer can use.
  • converts Alternating current to Direct current
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4
Q

What are three types of memory?

A

Cache, ROM and RAM

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5
Q

What is RAM memory?

A

Read Access Memory

  • RAM is volatile storage which stores programmes which are currently running
  • RAM also stores part of the operating system to be accessed by the CPU
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6
Q

What is Cache Memory?

A

Cache

  • Cache is volatile storage that stores data which is frequently accessed by the CPU
  • Cache is quicker to access because it is more closer to the CPU than other types of memory such as RAM
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7
Q

What is ROM?

A

Read Only Memory

  • ROM is non volatile storage that cannot be changed
  • ROM stores the boot up / BIOS programme for when the computer is switched on
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8
Q

What is magnetic storage?

A
  • Magnetic hard disk drive is most common amongst desktop computers
  • A read / write head moves nanometres above the disk platter and the platter uses a magnetic field to read / edit data
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9
Q

What is optical storage?

A
  • optical storage uses a laser to project beams of light onto a disc allowing it to read data from CD’s, DVDs and Blu-Ray
  • this makes optical storage the slowest out of the four secondary storage types
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10
Q

What is SSD?

A

Solid State Drives

  • There are no moving parts in an SSD which makes it have the fastest access speed
  • SSD’s are replacing HDD’s because they are quicker and faster and use less power
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11
Q

What is cloud storage?

A
  • cloud storage is data which is stored on large servers owned by the company which can be accessed on different devices
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12
Q

Name the Magnetic HDD’s characteristics

A
  • High capacity
  • Not portable
  • Not durable as moving it could damage it
  • Relatively quick access speed but slower than SSD’s
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13
Q

Name the optical storage characteristics

A
  • Low capacity
  • Not durable, easy to get scratches etc.
  • High portability easy to move around
  • Slowest access speed
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14
Q

Name the SSD characteristics

A
  • High capacity
  • Durable but cheap SSD’s can snap or break
  • High portability as it is easy to move around
  • Highest access speed as there are no moving parts
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15
Q

Name the cloud storage characteristics

A
  • Huge capacity, more storage can be bought by getting a better subscription
  • Portability, Durability and access speed all rely heavily on the internet connect,
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16
Q

What is an expansion card?

A

An expansion card is are optional hardware components providing additional functionality which are attached to the motherboard.

17
Q

What is a graphics card?

A

Processes graphical data such as videos and animations and converts it into a display or format on a monitor.

18
Q

What is a NIC (Network Interfacd Card) ?

A
  • Allows computers to connect to a network such as the internet wirelessly
19
Q

What is a fibre channel card?

A
  • Allows data to be transferred between servers across a network
  • fibre channel cards allow for quick transfer speeds
20
Q

What is a sound analogue card?

A
  • converts audio to digital binary when inputting audio into a computer through a device like a microphone
  • converts digital binary to audio to output audio through a device like a speaker
21
Q

What is a port?

A

A port is the interface between external devices and the computer. Ports allow data to be transferred to and from these devices.

22
Q

What is a USB port?

A

A usb port connects input devices and storage devices such as keyboard, mouse, external HD.

23
Q

What is a FireWire port?

A
  • developed for apple products
  • allows data to be transferred at higher speeds from devices such as camcorders and external hard drives
  • allows for networking
24
Q

What is a SD port?

A
  • an SD port allows data to be transferred from devices such as a camera to a computer
25
Q

What is an Ethernet port?

A
  • an Ethernet port allows computers to connect to a network device such as modem / router allowing access to the internet
26
Q

What is a SATA port?

A

A SATA port allows data to be transferred between storage devices such as external HD, SSD’s and optical drives

27
Q

What is a micro SD port?

A

A micro SD port allows data to be transferred from devices such as smartphones and tablets to a computer.

28
Q

What is a fibre channel port?

A

Used to connect fibre optic cables, usually connecting to servers and other storage devices.

OCR IT Unit 1 (19 decks)

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