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TYPING ERGONOMICS
Typing Ergonomics is the science of providing the correct setup of a computer, and a correct posture to reduce the
strain of muscles and joints due to repetitive typing posture for hours. Correct sitting posture is very important to avoid
long term health issues. They are also important to attain and maintain accuracy and speed.
Some of these factors are given below:
• Sitting Posture
w While operating the computer keyboard, the neck and the back should be relaxed and straight.
w Check your comfort, and sitting position of body.
w Touch the lower portion of your back, to the lower portion of the backrest of the chair.
w Your feet should be flat on the ground. In case your feet do not touch the ground then put a proper footrest.
w Bend your knees at a 90 degree angle, and keep your knees at the same level or slightly lower than hips.
w Leave a 2-3 inch small gap between the bottom of your thighs and the edge of the seat. This helps reduce pressure
build-up in the underside of your thighs.
w Don’t sit with your legs crossed, this will restrict the blood flow in your thighs.
w Avoid leaning on any side. Keep hips even, to distribute the weight of your body.
w Take a break after 30 minutes, to avoid sitting for a longer time.
• Position of Hands
w Put your forearms at level with the keyboard and palms down.
w Keep your wrists straight and hang your elbows naturally.
w Don’t touch the elbows to the body, nor be too far away from the body.
w Elbows should be bent between 90-110 degree angles to keep less strain on the hand and arm joints.
w Your keyboard should be slightly bent downward so that your fingers are typing downward and your wrists are
more relaxed.
• Monitor Placement
w Do not bend your neck while working on the monitor and keep the upper border of the screen at eye level.
w The distance of the screen from the user depends on the size of the screen. Keep an approximate distance of
about 60–65 cms for a 17 inches screen.
w Monitor should be placed at arm’s length distance, or 20 to 30 inches away.
• Mouse and Keyboard Placement
w Keep the keyboard and mouse together at an approximate distance of 20 cm, which will help in smooth and
effortless operation of the keyboard.
w Same height of keyboard, mouse, and elbows help the users to work comfortably.
• Chair and Table Placement
w Adjust the computer chair and table to an optimal height.
w The chair of the computer user must be supportive to his/her lower back.
w Keyboard and vibrating devices, such as printers, should be on separate tables.
w The computer table should also have sufficient space for your legs.
w With the correct ergonomics, typewriting becomes a natural phenomenon without causing unnecessary fatigue.
• Placement of Matter to be Typed
w Place the matter for typing to the left or right side of the keyboard, preferably on a Copy Holder which has a
sloping surface.
204 Trackpad Information Technology (Ver. 1.0)-IX

