虽然世界已经进入计算机的时代,许多逻辑功能都可以通过软件来实现。但是在一般的自动控制场合和测量电路中,如果采用软件方式就显得事倍功半了。这里采用一片双十进制同步计数器CC4518和一片与非门电路CC4011构成的减法电路,能够获取多项算术 Although the world has entered the era of computers, many of the logical functions can be achieved through software. However, in general automatic control occasions and measurement circuits, if the use of software methods seem twice as effective. Here uses a double-decimal synchronous counter CC4518 and a non-gate circuit CC4011 constitute a subtraction circuit, to obtain a number of arithmetic