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02.00 Understand Computer Fundamentals.

02.02 Explain Care of the

Computer Environment

SUPPLEMENTAL

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ERGONOMICS

The science of designing equipment and workspace for a comfortable and safe working environment.

THEN NOW

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Proper Computer Ergonomics

Sit up straight and lean forward slightly from the waist.

Keep your feet flat on the floor Your body should be about a

hand’s length from the front of the keyboard and centered with the keyboard.

Keep your fingers on the home row keys and curved

Keep your wrists up, not touching the keyboard or desk.

Focus your eyes on the book, copy or screen.

Place all materials you will type on the right side of the computer and supplies on the left side.

Keep any items you are not using off your desk.

Occasionally rest your eyes and take short breaks.

Avoid lights that cause glare on the monitor.

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Computer Workstation Ergonomics

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Things to Remember

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Repetitive Stress Injuries(RSI)

Repetitive Stress Injuries (RSI) is a name used for a group of conditions that occur when someone performs a task repeatedly causing too much stress being placed on the joints

Examples of these injuries are Carpal Tunnel Syndrome (CTS) and DeQuervain’s Disease

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Carpal Tunnel Syndrome(CTS)

Is the entrapment of the median nerve in the carpal tunnel. CTS occurs due to the swelling of the median nerve or the tendons of the wrist.

Occurs from using the computer for hours without proper body posture and improper techniques.

Causes pain, tingling, numbness in the thumb, index, and middle fingers, and weakness and swelling of the wrist and hand.

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DeQuervain’s Disease

DeQuervain’s Disease is an overuse injury of the thumb extensor tendons.

It often occurs from repetitive tapping of the space bar.

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Exercises for Carpal Tunnel Syndrome

Extend and stretch both wrists and fingers acutely as if they are in a hand-stand position. Hold for a count of 5. 

Straighten both wrists and relax fingers. 

Make a tight fist with both hands. 

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Exercises (Continued)

Then bend both wrists down while keeping the fist. Hold for a count of 5. 

Straighten both wrists and relax fingers, for a count of 5. 

The exercise should be repeated 10 times. Then let your arms hang loosely at the side and shake them for a few seconds.