This simple button first appeared on the pocket calculators of the 1970s.

这个简单的按钮最早出现在上世纪70年代的便携式计算器上。

The inventor of the pocket calculator, Clive Sinclair, has died at the age of 81.

袖珍计算器的发明者克莱夫·辛克莱去世，享年81岁。

Perhaps pocket calculators will solve this problem.

M：也许袖珍计算器可以解决这个问题。

In the 1970s, the components reduced in size again, and in came the pocket calculators with red or green LED displays.

到20世纪70年代，组件的尺寸再次缩小，并且带有红色或绿色LED显示屏的便携式计算器问世了。

Why don’t you get him a pocket calculator?

为什么不给他买一个袖珍型计算器.

In addition to his pocket-sized radio, Sinclair produced the world's first pocket calculator in 1972, the first digital watch in 1976, and the first pocket TV the following year.

除了他的袖珍型收音机，辛科莱在1972年生产了世界上第一个袖珍型计算机，在1976年生产了第一快电子手表，次年推出了第一台袖珍电视机。