This document discusses computer basics and ergonomics. It covers the basic parts of a desktop computer and operating systems. It then discusses ergonomics, noting that it is the study of efficiency in the workplace. The document outlines four main areas of focus for computer users: the monitor, mouse, keyboard, and lighting. It provides guidelines for optimal setup and use of each component, as well as stretches to prevent injury from prolonged computer use.

1. Computer Basics

2. Computer Basics
Basic Parts of a Desktop Computer

3. Computer Basics
Inside a Desktop Computer

4. Computer Basics
Buttons, Sockets, and Slots

5. Computer Basics
Understanding Operating Systems

6. ERGONOMICS
The study of people’s efficiency in their
working environment.

7. Why do we care about ergonomics?
1. Helps you be more productive
2. Helps reduce workplace injuries

8. Four Main Areas
There are four main areas that people who use computers
should focus on:
1. The Monitor
2. The Mouse & Keyboard
3. The Chair
4. The Lighting

9. The Monitor
• Place the monitor as far as your eyesight will allow – a
minimum of 20 inches is preferred
• Place the center of the screen at a 15 degree down angle
from your eyes
• Bend your neck slightly while keeping your head
perpendicular to the floor
• Line up the monitor with the keyboard

10. Lighting
• Your work area should be moderately bright
• Do not use ‘task lighting’
• Mix incandescent and fluorescent lights to reduce flicker
and provide good light color

11. The Keyboard
• Position the keyboard slightly below the elbows to let your
wrists remain straight
• Keep your hands and arms off any supports while typing
• Do not use the feet on your keyboard – the flat (negative)
angle keeps your wrists in the proper position

12. The Mouse
• Place the mouse at the same level and immediately next
to the keyboard
• Use your elbow, not your wrist or shoulder, to reach your
mouse
• Don’t rest your wrist on anything while using the mouse

13. Chair Setup & Posture
• Use arm rests
• Adjust the height of the chair so your feet can rest
completely on the floor
• Allow 1-3 inches between the edge of your seat and the
back of your knees
• Don’t cross your ankles
• Hold your head perpendicular to the floor
• Let your upper arms hang naturally from
your shoulders
• Keep your lower arms parallel to the floor
• Keep your wrists straight
• Stretch!

14. STRETCHES

15. Side to Side Neck Stretch

16. Front to Back Neck Stretch

17. Standing Toe Touch

18. Back Stretch

19. Arm and Wrist Stretch