pulse counter

The key of this invention is the realization of comparer, counter, latch and system pulse generator.

关键是比较器 、 计数器及锁存器和系统脉冲产生器的实现.

Three chips of microcomputer are used to perform three different functions, the first for dual PID controller in voltage and current loops, the second for pulse-triggered circuit in the thyristor converter and the third for the nonlinear function generation and ring counter in the inverter.

三片单片机分别实现电压与电流反馈环中的数字PID调节器，晶闸管变流器的脉冲触发电路，以及非线性函数发生器和脉冲环形分配器。

This paper describes a measurement method which is by increasing the counting of the pulse rate greatly through extending high speed counter outside of a general single chip microprocessor, accomplishes high accuracy and high resolving power measurement of signal's frequency and period, and provides practice examples.

本文叙述了普通单片机通过外扩高速计数器，大大提高系统定时器／计数器的计数脉冲速率，实现高精度、高分辨率的信号频率及周期的测量方法，并给出了应用实例。

Those of the other pulse should be subtracted to the content of the counter.

另一列脉冲则应从计数器中的数中减去.

In the design of the main oscillating circuit, the programmable timing counter IC of 8254 is controlled by the single chip computer to adjust the pulse width and interval, which provides the precise adjustment on the pulse width and interval in a wide range.

在主振脉冲发生电路的设计上，通过单片机控制可编程定时计数器芯片8254来控制脉冲宽度和脉冲间隔，使脉冲宽度和脉冲间隔在很宽的范围内可以精确调节。