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This article will explain in detail the use of counters for you. The editor thinks it is very practical, so I share it with you as a reference. I hope you can get something after reading this article.

The counter is the logic circuit to realize the counting operation. In the digital system, the counter mainly counts the number of pulses to realize the functions of measurement, counting and control, as well as the function of frequency division. The counter is composed of a basic counting unit and some control gates, and the counting unit is composed of a series of triggers with the function of storing information.

Counting is the simplest and most basic operation. The counter is the logic circuit to realize this kind of operation. in the digital system, the counter mainly counts the number of pulses in order to measure, count and control, and has the function of frequency division at the same time. The counter is composed of basic counting units and some control gates, and the counting unit is composed of a series of triggers with the function of storing information. These triggers include RS flip-flop, T flip-flop, D flip-flop and JK trigger.

Counters are widely used in digital systems, such as counting instruction addresses in the controller of an electronic computer, so that the next instruction can be taken out sequentially, and the times of addition and subtraction are recorded when multiplication and division are performed in the operator. for example, the count of pulses in a digital instrument, and so on. The counter can be used to show the working status of the product. Generally speaking, it is mainly used to indicate how many copies of the folding and paging work the product has completed. Its main indicator is the number of bits of the counter, the common ones are 3-bit and 4-bit. Obviously, the maximum of a 3-digit counter can be up to 999 and the maximum of 4 digits can be up to 9999.

Action

The most widely used sequential logic circuit in digital electronic technology. The counter can be used not only for counting clock pulses, but also for frequency division, timing, generation of beat pulses and pulse sequences, and digital operations. However, the calculation results can not be displayed, generally through the external LCD or LED screen can be displayed.

Kinds

1. If the counter is classified according to whether the trigger in the counter is flipped at the same time, the counter can be divided into synchronous counter and asynchronous counter.

2. If the counter is classified according to the increase or decrease of numbers in the counting process, the counter can be divided into addition counter, subtraction counter and reversible counter. At any time, the clock signal is increasing for the addition counter and decreasing for the subtraction counter.

In addition, there are many categories that are not listed one by one, but the first classification is the most commonly used, because this classification can make it clear at a glance what the trigger mode of the counter is, so that the designer can design the circuit.

In addition, counters are often divided into binary counters, decimal counters, and so on.

What is the use of the counter to share here, I hope the above content can be of some help to you, can learn more knowledge. If you think the article is good, you can share it for more people to see.

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