Ergonomics of Input Devices/bioenggineering

Topic : Ergonomics(bioengg.) of Input devices

ERGO work NOMO law

“study of how equipment and furniture can be arranged in order that people can do work more efficiently and comfortably“.

It includes: Work load

Work design Performance etc.

What is Ergonomics ?

Why there was a need of Ergonomics ?

Ideal working setup

Wrong way : Typing with one hand. Fingers and wrist bent. Shoulders not in rest position. Results in :• Swelling of connective tissues.• Swelling of thumb.• Numbness in fingers. Correct way: Keeps wrists in line with forearm. Don’t use wrist rest area in typing. Use SPLIT KEYBOARDS.

KeyBoard :

Ergonomic keyboards

Wrong way:• With bent elbows .• Over pressure on buttons.• Pivoting wrist while mousing. Results in :• Pain in wrist.• Pain in joints of fingers.• Stretching of muscles. Correct way :• Wireless or laser mouse.• Free movement of wrist.• Use SLANT mouse.

Mouse :

Ergonomic Mouse:

Wrong way:• Too much bent in neck• Tightly grasping Results in :• Pain in neck• Pain in tendons• Isometric tension Correct way• Putting on desktop• Using round table• Free movement of wrist

Graphic Tablets

Any question