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Introduction
In this article, we will look at a decoder, which is a combinational circuit that converts binary data from N coded inputs to a maximum of 2N different outputs.
There are many applications of decoders. Let’s find out.
What is Decoder?
A decoder is an electronic device that receives an encoded signal and transforms it into the desired output signal. It is frequently used in digital systems to convert binary data into a format that can be easily understood by other components.
A decoder typically has a fixed number of input lines and produces a unique output code for each input code. The number of output lines on a decoder depends on the number of input lines and the type of decoding used.
Decoders are used in various functions in computer systems including code conversions, memory operations, de-multiplexing, and data distribution. Let's discuss some of them::-
Memory Address Decoding
Seven-Segment Display Decoder
Television Remote Control
Barcode Scanner
Traffic Light Control
Security Systems
Motor Control
Keyboard encoder
Sound Synthesis
1. Memory Address Decoding
A memory address decoder is used in computer architecture to select a specific memory location from a large memory space. It accepts a binary address as input and then outputs a signal to choose the relevant memory location.
2. Seven-Segment Display Decoder
Seven-segment displays are commonly used to display numeric digits and some alphabetic characters. A seven-segment display decoder is used to convert a binary input into the appropriate output to display a specific character on the display.
3. Television Remote Control
A television remote control sends a coded signal to the TV when you press a button. The TV has a built-in decoder that interprets the code and takes the appropriate action.
4. Barcode Scanner
A barcode scanner uses a decoder to interpret the lines of a barcode and convert them into a product code that can be used to look up information about the item. Barcode scanners are generally used in supermarkets.
5. Traffic Light Control
A decoder can be used to control the sequencing of traffic lights at an intersection.
6. Security Systems
A decoder can be used in a security system to decode signals from sensors and trigger an alarm if necessary.
7. Motor Control
A decoder can be used to control the speed and direction of the motor by decoding signals from a microcontroller.
The purpose of a decoder is to decode binary information and convert it into a format that can be easily used by other circuits or devices.
What is a binary decoder?
A decoder that converts a binary code into an output signal on one of its output lines.
What is a BCD decoder?
A decoder that converts a binary-coded decimal (BCD) signal into a decimal output signal.
What is the difference between decoder and an encoder?
An encoder converts an input into a coded output, while a decoder converts a coded input into an output.
What is a 2-to-4 decoder?
A decoder that has two input lines and four output lines.
Conclusion
In this article, we discussed various application of decoders. You can also read the articleIntroduction to Decodersto improve your knowledge about decoders.
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