4 Bit Up Counter Circuit Diagram. 4 bit synchronous up counter. Because this 4 bit synchronous counter counts sequentially on every clock pulse the resulting outputs count upwards from 0 0000 to 15 1111.
It is shown in the below diagram. With m 1 down counting mode if m 1 then and gates 2 and 4 in fig. Whereas for the up down counter you can use multiplexers as switches as we saw in the design of the 3 bit synchronous up down counter.
A 4 bit synchronous up counter start to count from 0 0000 in binary and increment or count upwards to 15 1111 in binary and then start new counting cycle by getting reset.
4 bit ripple counter using jk flip flop circuit diagram and timing diagram. Similar to the 3 bit synchronous up counter a 4 bit up counter can be designed but with 4 flip flops. Its operating frequency is much higher than the same range asynchronous counter. In 4 bit ripple counter n value is 4 so 4 jk flip flops are used and the counter can count up to 16 pulses.
