Example of component computer hardware are

• motherboard

• CPU

• BIOS (ROM)

• scanner

It is call as a brain of computer. It is responsible to perform calculation and data processing. What it is?

Characteristic of this component are

• it is called Read only memory (ROM)

• it is called Random access memory (RAM)

• content are lost when computer turn off

• content are not lost when computer turn off

_________ allow people to exchange digital message. these message can be quickly sent to one person or to thousand at the click of a button.

• fax

• email

• website

• internet

what is meant by computer virus?

Answer explanation

Definition : A self copying program that has been created with the purpose of damaging a computer system.

There are many health problem that you can suffer if you use ICT devices incorrectly. For example

• toothache

• repetitive strain injury (RSI)

• back and neck strain

• fever

RSI can cause painful swelling of the wrist and fingers. How do we preventing from RSI?

• do not use ergonomic keyboard

• work hard regularly on your hand as a practice

• use a wrist rest

• do not take a rest

Sensor can also be used for a wide range of data collection and everyday applications. For example pressure type of sensor are used in

• cookers

• washing machine

• automatic washing machine

• agricultural

A supermarket has a number of point of sale (POS) terminals. Choose two output devices that would be found at POS terminal.

• bar-code scanner to scan the codes

• printer to produce a receipt

• loud speaker

Undesirable websites are those that include content that is offensive to individuals. However we can avoid to reduce the chances of you accidentally stumbling across undesirable information by......

• stick to well known websites

• use built in search engine filter

• use parental control

• click any pop up message on screen