What is a digital device?

What is a digital device?

 What is a digital device?

Digital devices include all electronic equipment including computer equipment, mobile phones, digital cameras and multimedia projectors. An electronic device that stores information and displays it as a digital file as needed is called a digital device.

In other words

All devices whose operation is controlled by digital logic are called digital devices. All devices that technically work with digits or 0, 1 or true and false are called digital devices. End gate, OR gate, NOT gate, multiplexer, demultiplexer, encoder, decoder, etc. are used as components of digital devices. Digital devices are based on binary number theory.


Some digital devices

1. Computer

2. Calculator

3. Digital camera

4. Personal Digital Assistant (PDA)

5. Multi-Media Projector etc.



Human Language ➡ Encoder ➡ Computer Comprehensible Language

Computer understandable language ➡ Decoder ➡ Human language


Encoder-Decoder These are basically converters, converting signals.

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An example will make it clear.

When you press 'A' on the keyboard, the computer will no longer understand 'A', it will only understand '0' and '1', the encoder circuit will encode 'A' and send it to the computer, and the computer will recognize it as a The output will signal 'A' to be printed on display. But that signal of the computer will not be understood by humans, suppose you press 'A' and the display shows '01000001' then there is a problem, because of this the decoder circuit of the computer will convert the signal into human understandable language.


1. Connected to the output unit of a computer or other digital device.

2. Decoder is used to decode the binary numbers of various instructions, memory addresses, and counters in the computer's control unit.

3. Decoders are also used in various types of display units such as monitor video and output devices.