Chapter 3 Lesson 3

How to Take Care of your PC
1. Computers need a good working temperature to work properly. They need ti be placed in cool and dry place.
2. All the cables and connectors must be tied together to keep them away from walkways to avoid accidents.
3. Refrain from eating in front of computers. Food bits attract insects that can penetrate the hardware.
4. Always use AVR (automatic voltage regulator) to regulate the electricity. Turn off the computers during lightning as these can cause electrical surges to the computer.
5. Do not bump or drop the computer peripherals or components as any damage may cause them to malfunction.
6. Avoid clutter around your computer. Use soft cloth in cleaning your computer to avoid scratches.
7. Always scan computer viruses.

USER'S HEALTH RISKS AND PREVENTION

Good Working Habits

• Tap on the keys and mouse buttons gently.
• Avoid long. uninterrupted periods of typing. You may take a short stretch breaks every 20 minutes.
• Avoid staring at the monitor for long periods. Take vision breaks and do eye exercises.

Proper Workstation Design

• Position in a well-ventilated, comfortable room.
• Use an adjustable workstation and an ergonomic computer chair.
• Place the monitor 16 to 24 inches away, at eye level or slightly at a lower angle. Tilt the monitor or adjust light source.
• Use expendable/retractable legs of the keyboard.
• Place mouse where it is easily accessible by your dominant hand.
• Use a document holder to minimize vertical head movements.

Proper Posture

• Sit up straight and put the feet flat on the floor.
• Position your lower arms parallel with the floor and level to your keyboard and the mouse, with elbows at your side.
• Keep wrists straight.
• Do not lean into the monitor, but sit close enough to the keyboard and the mouse to stay relaxed.