Ring Counter Circuit Working Principle with Animation and Video

Posted on Feb 6, 2014

Digital counters have several applications in electronics circuits. Counters in digital electronics are used at different situations. Here we are going to deliver the idea of aRing counter circuit, which is a register counter. Working animation and circuit simulation video of ring counter are also given along with this article. A ring counter is f

Ring Counter Circuit Working Principle with Animation and Video
Click here to download the full size of the above Circuit.

ormed by feeding the output of a shift register to its own input. The data pattern enclosed within the shift register will re-circulate as with respect to the clock pulse. Ring counter is one of the shift register applications. We have already posted Johnson counter circuit with animation. With little modification on ring counter we can obtain Johnson counter circuit. A ring counter has N states where N` is the number of flip-flops. So let`s discus about digital counter circuit design (Ring counter) in detail with animation/ simulation. This counter is a circulated shift register. Here a 4 bit shift register is implemented with 7474 flip flops. This is a synchronous counter because clock signal is common for all flip flops. Preset` pin of 1st unit is connected to Vcc via a switch (Push to OFF switch). Preset pin is used to set the output of a flip flop to logical high (1)forcefully. The Presets` of other flip flops are directly coupled to Vcc in order to work properly because these pins are active low logic pins (This connection is not shown in above circuit. For simplicity it is removed). But don`t forget to connect it while you are implementing practically. This output will be shifted to the next flip flop during the next clock pulse and so on. At the same time the low output from last flip flop is shifted to the input of 1st flip flop.

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