针对目前市场上供应的油珍型电子计算器(以下简称计算器),具有价格低廉,携带方便,使用可靠等优点,因此,利用它作为一种主要部件来实现简易自控或脉冲记数是一种较好的方法。因目前所使用的计算器,大多数为国外进口,也有一部分是国内产品,这些计算器只有使用说明均无线路图。同时因计算器内部集成块性能已定,不太好改动。如要实现利用计算器来进行简易自控和脉冲记数时,只能利用其输入键盘,从计算器的印刷板上抽出相应的面板上输入键盘的两个常开触 For the current supply of the oil Zhen electronic calculator (hereinafter referred to as calculator), with low prices, easy to carry, reliable use, etc. Therefore, the use of it as a major component to achieve simple automatic control or pulse count is one A better way. Due to the calculator currently used, most are imported, some are domestic products, these calculators are only instructions for use without a road map. At the same time due to the calculator internal block performance has been set, not very good changes. To achieve the use of calculators for easy self-control and pulse counting, you can only use its input keyboard, from the calculator’s printed board out of the corresponding panel input keyboard two normally open