What does an address decoder do?

In digital electronics, an address decoder is a binary decoder that has two or more inputs for address bits and one or more outputs for device selection signals. When the address for a particular device appears on the address inputs, the decoder asserts the selection output for that device.

What is known as decoder?

Definition of decoder : one that decodes especially : an electronic device that converts signals from one form to another (as for unscrambling a television transmission)

Why address decoders are used in memory interfacing?

Address decoding refers to the way a computer system decodes the addresses on the address bus to select memory locations in one or more memory or peripheral devices. The 68000’s 23-bit address bus permits 223 16-bit words to be uniquely addressed.

Why is decoder used?

The decoder is an electronic device that is used to convert a digital signal to an analog signal. It allows a single input line and produces multiple output lines. The decoders are used in many communication projects that are used to communicate between two devices.

What is decoder explain 3 to 8 line decoder with diagram?

3 Line to 8 Line Decoder Block Diagram This decoder circuit gives 8 logic outputs for 3 inputs and has a enable pin. The circuit is designed with AND and NAND logic gates. It takes 3 binary inputs and activates one of the eight outputs. 3 to 8 line decoder circuit is also called a binary to an octal decoder.

WHY AND gate is used in decoder?

It is convenient to use an AND gate as the basic decoding element for the output because it produces a “HIGH” or logic “1” output only when all of its inputs are logic “1”. As a NAND gate produces the AND operation with an inverted output, the NAND decoder looks like this with its inverted truth table.

What is a 2 to 4 line decoder?

The 2-to-4 line binary decoder depicted above consists of an array of four AND gates. The 2 binary inputs labelled A and B are decoded into one of 4 outputs, hence the description of 2-to-4 binary decoder. Each output represents one of the minterms of the 2 input variables, (each output = a minterm).