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・ Keystone High School
・ Keystone High School (LaGrange, Ohio)
・ Keystone Hook and Ladder Company
・ Keystone Hotel
・ Keystone Hotel (film)
・ Keystone Hotel (Hummelstown, Pennsylvania)
・ Keystone Hotel (Lampasas, Texas)
・ Keystone Ice Miners
・ Keyodhoo
・ Keyodhoo (Vaavu Atoll)
・ Keyoh
・ Keyon Dooling
・ Keyon Nash
・ Keyon Whiteside
・ Keyonta Marshall
Keypad
・ Keypad polling
・ Keypasco
・ Keypers
・ KeyPoint Federal Credit Union
・ Keyport
・ Keyport and Oak Grove Turnpike
・ Keyport Harbor
・ Keyport High School
・ Keyport Public Schools
・ Keyport, New Jersey
・ Keyport, Washington
・ Keypunch
・ KEYQ
・ Keyqobad


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Keypad : ウィキペディア英語版
Keypad

A keypad is a set of buttons arranged in a block or "pad" which usually bear digits, symbols and usually a complete set of alphabetical letters. If it mostly contains numbers then it can also be called a numeric keypad. Keypads are found on many alphanumeric keyboards and on other devices such as calculators, push-button telephones, combination locks, and digital door locks, which require mainly numeric input.
==Invention==
The invention of the keypad is attributed to John E. Kerlin, an industrial psychologist at Bell Labs in Murray Hill.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Keypad」の詳細全文を読む



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