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电话的按键布局是怎么来的?
[ 2006-12-18 10:35 ]

不知您有没有仔细观察过我们天天使用的电话:它的按键排列,0是在最下方的。不是应该越小的数字越应该排在前面吗?为什么电话的按键布局这么特别呢?下面这篇文章就将为您解释这个问题。

Mechanical adding machines, based on rotating wheels, always have the 0 button adjacent to the 1 button. By convention, most old adding machines had the numbers increasing in value from the bottom. When the numbers were put onto a pad arranged as a 3 by 3 grid with one left over, the order of the numbers was kept the same.

On a rotary telephone dial, the 0 comes adjacent to the 9 because a 0 in the telephone number is signaled by 10 pulses on the line. When telephones acquired push buttons in a grid, the ordering of the buttons was carried over from the old telephone dial.

adjacent: 邻近的

(英语点津 Annabel 编辑)

 
 
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