Computer Users health & safety

7. The build-up of dust can (and surely does) impact your computer's performance for two main reasons: it causes the components of your computer to retain heat and it makes it more difficult for the internal fans to dissipate heat from the system, thereby decreasing the efficiency of the entire system.
11. ...... a roughly be defined as the study of people in their working environment.
13. This could be transferred by flash drives or CDs/DVDs from one computer to another and it has the potential of destroying your devices.
14. is damage to the fingers and wrists due to repeated movements over a long period of time e.g. keying letters into keyboard.
15. Do not put ...... objects into your computer system.
16. ...... and tear of parts and circuitry is over time computers will wear down, simply because they are partial mechanical
19. ......is an urgent, unexpected, and usually dangerous situation that poses an immediate risk to health, life, property, or environment and requires immediate action.
20. Prolonged exposure to high ...... corrodes the components inside your computer, similar to the way damp air on a rainy day rusts metal left outdoors.

1. Pain that extends to the forearm to the hand, along with numbness and tingling in the thumb fingers.
2. Also known as voltage fluctuation is a change in the power supply or voltage to electric appliances. Frequent power fluctuation can hamper the performance of electric appliances and reduce the life of appliances
3. when the temperatures outside are extremely hot, it can shorten the lifespan of hardware inside your computer this is known as ......
4. also called a directory, is a space used to store files, other folders, and shortcuts on a computer.
5. Repetition, Lack of rest, and …. are the key factors of RSI .
6. Computers are not always built perfectly, in which case the malfunction is the responsibility of the manufacturer ……… caused by them.
8. Do not install or install computer software without a ........ permission.
9. You should not change these without a teacher’s permission.
10. Main used now for data storage. It should be ejected carefully from computers or you can corrupt your data.
12. ...... are statements that say what a person is and isn't allowed to do. Following these prevents disorder.
17. Creatures/pests not wanted in your computer or working environment.
18. If you spill, they may cause short circuits or electric shocks inside the computers.