ICT YEAR 9

When we talking about storing data. We mean putting data in a known place. Tick whether the following are a part of storage data.

• optical storage media

• solid state storage media

• memory stick

• hard disk

If we use computer in many hours, there are some health issues that might affect us such as eye strain. State one cause and how the problem can be solved.

Using mouse for prolonged period of time can cause RSI to be happened. How is the possible solution for this problem?

• use a wrist rest

• do not take a break

• use ergonomic keyboard

• use adjustable chair

Microprocessor are used to improve people lifestyle. State the negative effects that can affect on lifestyle.

• social isolation (we dont meet each other often)

• lack of exercises

• increased leisure time

• working on the move

Heating system use microprocessor to control things like:

• time when heating is switch on/off

• water temperature

• keeping constant temperature

• make the temperature different from room to room

Many supermarkets now allow customer to pay goods or service electronically. Describe input and processing involved in pay using chip and pin.

• insert card/pin and chip and pin reader works. If the correct PIN is enter, the cost of goods will be taken from the holder's bank and transfer to the company.

• barcode on the product and the barcode scanner will read the information using visible red light and the cost of goods will be taken from the holder's bank and transfer to the company

Benefits using Optical Mark Reader (OMR) to read shaded area on document are

• extremely fast

• very accurate

• can save money

• read only shaded area

What is purpose of system analysis and design?

What are the six stage of system and analysis and design? Put the answer in order.

There are three types of test data that can be used to test a system. What it is ?