# What are decoders and encoders?

## What are decoders and encoders?

The combinational circuits that modify the binary data into N output lines are known as Encoders. The combinational circuits that convert the binary data into 2N output lines are called Decoders.

## How many inputs will a 3 bit input encoder have?

8 inputs

8 : 3 Encoder (Octal to Binary) – The 8 to 3 Encoder or octal to Binary encoder consists of 8 inputs : Y7 to Y0 and 3 outputs : A2, A1 & A0. Each input line corresponds to each octal digit and three outputs generate corresponding binary code.

**How many inputs are in encoder?**

2n input lines

An Encoder is a combinational circuit that performs the reverse operation of Decoder. It has maximum of 2n input lines and ‘n’ output lines. It will produce a binary code equivalent to the input, which is active High. Therefore, the encoder encodes 2n input lines with ‘n’ bits.

### What is encoder and decoder with example?

Encoders convert 2N lines of input into a code of N bits and Decoders decode the N bits into 2N lines. 1. Encoders – An encoder is a combinational circuit that converts binary information in the form of a 2N input lines into N output lines, which represent N bit code for the input.

### What is encoder and its application?

Encoder Applications. Encoders translate rotary or linear motion into a digital signal. That signal is sent to a controller, which monitors motion parameters such as speed, rate, direction, distance, or position.

**Where is encoder used?**

Specifically, it is a device that is powered by a motor. For example, encoders are widely used in industrial robots used in factories such as assembly robots, welding robots, automatic guided machines, and machining centers.

#### What are the uses of decoders?

Decoder Applications

- Decoders are used to input data to a specified output line as is done in addressing core memory where input data is to be stored in a specified memory location.
- It is used in code conversions.
- In high-performance memory systems, this decoder can be used to minimize the effects of system decoding.

#### How many inputs and outputs does a 3 line decoder have?

This type of decoder is called the 3 lines to 8 line decoder because they have 3 inputs and 8 outputs. To decode the combination of the three and eight, we required eight logical gates, and to design this type of decoder we have to consider that we required active high output.

**How do you implement a 3 to 8 decoder circuit?**

From the above Boolean expressions, the implementation of 3 to 8 decoder circuit can be done with the help of three NOT gates & 8-three input AND gates. In the above circuit, the three inputs can be decoded into 8 outputs, where every output represents one of the midterms of the three input variables.

## What are encoders?

Encoders – An encoder is a combinational circuit that converts binary information in the form of a 2 N input lines into N output lines, which represent N bit code for the input. For simple encoders, it is assumed that only one input line is active at a time. As an example, let’s consider Octal to Binary encoder.

## How many outputs does a 4 bit decoder have?

The four-bit decoder allows only four outputs such as A0, A1, A2, A3 and generates two outputs F0, F1, as shown in the below diagram. In digital electronics, the binary decoder is a combinational logic circuit that converts the binary integer to the associated pattern of output bits.