Gr 10 2.2 Basic concepts of hardware

Question 1

Biometric scanners

Answer 1

Biometric scanners (usually optical) are specifically designed
for security, and read and identify unique identifying
characteristics of people, like fingerprints or the pattern of
an iris.

Question 2

Data Projector

Answer 2

A data projector connects to your computer and projects
what is on your monitor on a screen or wall so that everyone
can see a larger version of what would be on your monitor.

Question 3

Dot matrix printers

Answer 3

A very old technology using pins hitting ink ribbons to create
images on paper.

Question 4

Inkjet printer

Answer 4

Sprays drops of ink on paper.

Question 5

Laser printer

Answer 5

Works by melting toner into the paper

Question 6

Magnetic Storage

Answer 6

Stores data by means of magnetic fields, for example hard
disks.

Question 7

Modem

Answer 7

Device that converts the signal from a computer to a format
that can be transmitted over a communication channel.
3G Modem: To transfer data over a cellular phone network.
ADSL Modem: For high-speed data transfer over digital
telephone networks.

Question 8

Optical Storage

Answer 8

Stores data by means of laser, for example CD, DVD, Blu-ray

Question 9

Router

Answer 9

Device that makes communication between networks over
the internet possible by helping to direct data to its correct
destination.

Question 10

SSD

Answer 10

(SOLID STATE DRIVE)
A type of disk that stores data electronically.

Question 11

Synchronise

Answer 11

The process of getting two sets of the same data files on two
different devices updated with the latest copy of the file(s)

Question 12

Touchpad

Answer 12

Touch pads are rectangular pressure sensitive areas built
into the laptop. They are input devices that can be used
instead of a mouse.

Question 13

USB Hub

Answer 13

Connects to a USB port and expands it to 4 or more ports
that devices can be connect to.