What are Digital Circuits?

Digital circuits are electronic circuits that use digital signals, which are signals that can have only two discrete values (typically represented as 0 and 1). Digital circuits are used to process and manipulate digital data, such as the data stored on a computer’s hard drive or the data transmitted over the internet.

Digital circuits are built from a combination of basic digital components, including:

Logic gates: These are circuits that perform logical operations, such as AND, OR, and NOT.

Flip-flops: These are circuits that can store a single bit of digital information.

Multiplexers and demultiplexers: These are circuits that can select one of several input signals and output it on a single line or take a single input signal and route it to one of several output lines.

Counters: These are circuits that can count the number of pulses or events that occur over a specific period of time.

Digital circuits are a fundamental part of many modern technologies, including computers, smartphones, and other electronic devices. They are an important area of study for anyone interested in electrical engineering or computer science.

Digital Circuit Design Issues

It is important to note that whereas analogue components like resistors, relays, transistors, diodes, and flip-flops are used to design digital circuits, the behaviour of the signal or data during the operation of a digital circuit is unaffected by these components. The following are design flaws that are frequently seen:

Unsuitable system design may result in issues like malfunctions.

The circuit becomes metastable when a different clock signal is not properly synchronised.

Digital circuits have a high noise immunity, allowing for more frequent calculations.