Counters (8)

Simple LED Flasher

The electronics student or hobbyist’s always likes to make various circuits for their home or school and especially ones that flashes a few lights. There are many circuits and kits on the market that can flash any number of LED's or lights periodically, randomly or sequentially...

7-segment Display Counter

Nowadays it is very easy to display numbers and letters across multiple LED displays using micro-controllers, such as the Arduino or Raspberry-Pi, along with a small bit of software related code to display the required digits. But sometimes as an Electronics student or hobbyist w...

MOD Counters

The job of a counter is to count by advancing the contents of the counter by one count with each clock pulse. Counters which advance their sequence of numbers or states when activated by a clock input are said to operate in a "count-up" mode. Likewise, counters which decrease the...

BCD Counter Circuit

We saw previously that toggle T-type flip flops can be used as individual divide-by-two counters. If we connect together several toggle flip-flops in a series chain we can produce a digital BCD counter which stores or display the number of times a particular count sequence has oc...

Bidirectional Counters

A bidirectional counter is a synchronous up/down binary counter that has the ability to count in both directions either to or from some preset value as well as zero. As well as counting "up" from zero and increasing or incrementing to some preset value, it is sometimes necessary...

Synchronous Counter

Unlike asynchronous counters whose output of one stage is connected directly to the clock input of the next counter stage in the chain. The synchronous counter has its stages all clocked together at the same time. The problem with Asynchronous counters is that they suffer from w...

Asynchronous Counter

An Asynchronous counter can have 2n-1 possible counting states e.g. MOD-16 for a 4-bit counter, (0-15) making it ideal for use in Frequency Division applications. But it is also possible to use the basic asynchronous counter configuration to construct special counters with counti...

Frequency Division

In the Sequential Logic tutorials we saw how D-type Flip-Flop´s work and how they can be connected together to form a Data Latch. Another useful feature of the D-type Flip-Flop is as a binary divider, for Frequency Division or as a "divide-by-2" counter. Here the inverted outpu...