小计算器价格便宜,计算精度高,功能多、体积小,耗电少,是个很好的计算工具。我们还可以经过简单的改装,配上适当的电路将计算器应用到仪器仪表或其它场合做计数器、运算器和数字打印机,这对运行速度要求不高的情况是简单易行和行之有效的。一、袖珍计算器用作计数器 1.工作原理计算器清零后用手按下“+”和“1”键(即计数准备)再按一下“=”号键,此时显示为1,以后每按一次 Small calculator cheap, high accuracy, multi-function, small size, low power consumption, is a good calculation tool. We can also through a simple modification, coupled with the appropriate circuit to the calculator or other occasions to do counter, calculator and digital printer, which is less demanding on the operating speed is simple and effective . First, the pocket calculator as a counter 1. Working principle After the calculator cleared by hand press the “+” and “1” key (counting) and then click the “=” key, then displayed as 1, Press once