Decade Counter in Electronics

A decade counter is a type of electronic circuit that can count from 0 to 9 and then reset to 0 on the next pulse. It is commonly used in digital electronics for applications such as frequency counting, timing, and controlling digital devices.

Operation of Decade Counter

The operation of a decade counter is based on the principle of binary counting, which means that it counts in binary numbers (0 and 1). However, instead of using binary digits, a decade counter uses decimal digits (0 to 9).

The counter starts at 0 and counts up to 9 on each input pulse. When it reaches 9, it resets to 0 on the next pulse. This is known as a modulo-10 or decade count.

Types of Decade Counters

There are several types of decade counters, including:

1. Asynchronous decade counter - This type of counter uses flip-flops to perform the count. The flip-flops are triggered by the input pulse, and each flip-flop represents one decimal digit.

2. Synchronous decade counter - This type of counter uses a clock signal to synchronize the count. The clock signal is connected to all the flip-flops, and each flip-flop represents one decimal digit.

3. Johnson decade counter - This type of counter uses a shift register to perform the count. The shift register is connected in a loop, and the output of the last stage is fed back to the input of the first stage.

Advantages of Decade Counters

Some advantages of using a decade counter in electronic circuits include:

1. They are simple and easy to use.

2. They can count up to 9 before resetting, which is useful for many applications.

3. They can be combined with other digital circuits to perform more complex functions.

Conclusion:

Therefore, the correct option is 'C' - a decade counter counts to 9 and resets on the next pulse.