How to Place Your Fingers on an Adding Machine
People typically begin using an adding machine by looking at the number pad and pecking at the keys with an index finger. If you use this equipment regularly in your job, you'll find that placing your fingers on the numbers properly will provide a significant time improvement in your work, and you won't have to keep looking at the keypad. This finger placement works on a computer keyboard number pad as well.
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Instructions
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Place the index finger of your right hand on the number 4, the middle finger on the number 5 and the ring finger on number 6. This is your starting position.
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Make sure your little finger is resting over the Enter key and your thumb over the key for 0 (zero).
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Notice that the number 5 has a small bump to help keep your fingers in place without your having to look at the keypad. This is the same principle with computer keyboards, which have guides on the keys F and J as well as on the number 5 on the number pad.
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Use your index finger to press the 7, 4 and 1 keys. Use your middle finger to press the 8, 5, 2 and division (/) keys. Use your ring finger to press the 9, 6, 3, multiplication (*) and decimal point (.) keys. Press the minus (-), plus (+) and Enter keys with your little finger.
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Use a wrist rest if you work with the adding machine often, just as you would with a computer keyboard. A wrist rest helps protect against carpal tunnel syndrome, an injury caused by repetitive movement commonly associated with typing and data keying. Keep your wrist straight when using the machine, not at an angle.
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Lift your hand from the keypad frequently and stretch your fingers to avoid strain.
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