Dell LATITUDE C510 - Manual (Page 154)

Use a chair that provides good lower-back support.
Keep your forearms horizontal with your wrists in a neutral, comfortable position while using the
keyboard, touch pad, track stick, or external mouse.
Always use the palm rest with the keyboard, touch pad, or track stick. Leave space to rest your hands
when using an external mouse.
Let your upper arms hang naturally at your sides.
Ensure that your feet are resting flat on the floor.
When sitting, make sure the weight of your legs is on your feet and not on the front of your chair seat.
Adjust your chair's height or use a footrest, if necessary, to maintain proper posture.
Vary your work activities. Try to organize your work so that you do not have to type for extended
periods of time. When you stop typing, try to do things that use both hands.
For more information about ergonomic computing habits, see the BSR/HFES 100 standard, which can be
purchased on the Human Factors and Ergonomics Society (HFES) website at:
www.hfes.org/publications/HFES100.html
References:
1. American National Standards Institute. ANSI/HFES 100: American National Standards for Human Factors
Engineering of Visual Display Terminal Workstations. Santa Monica, CA: Human Factors Society, Inc., 1988.
2. Human Factors and Ergonomics Society. BSR/HFES 100 Draft standard for trial use: Human Factors
Engineering of Computer Workstations. Santa Monica, CA: Human Factors and Ergonomics Society, 2002.
3. International Organization for Standardization (ISO). ISO 9241 Ergonomics requirements for office work
with visual display terminals (VDTs). Geneva, Switzerland: International Organization for Standardization,
1992.