在计算机、数控装置及各种数字仪表中,计数器得到了广泛的应用。计数器不仅用来记录脉冲的个数,还大量用于分频、程序控制及逻辑控制等等。本文首先介绍国产中规模CMOS计数器的概况,然后介绍一些具体品种的功能,特点和典型应用。 In computers, numerical control devices and a variety of digital instruments, the counter has been widely used. The counter is not only used to record the number of pulses, but also for a large number of frequency, program control and logic control and so on. This article first introduces the overview of domestic CMOS counters, and then introduces some of the specific varieties of features, features and typical applications.