What is comparator DSD?

A digital comparator or magnitude comparator is a hardware electronic device that takes two numbers as input in binary form and determines whether one number is greater than, less than or equal to the other number. Note: An XNOR gate is a basic comparator, because its output is “1” only if its two input bits are equal.

What is bit magnitude comparator?

1-Bit Magnitude Comparator – A comparator used to compare two bits is called a single bit comparator. It consists of two inputs each for two single bit numbers and three outputs to generate less than, equal to and greater than between two binary numbers.

How many types of magnitude comparators are there?

This comparison is used for testing whether one number represented by one binary word is greater than, equal, or less than the other number. There are two main types of digital comparators available: Identity comparator and Magnitude comparator.

How do you make a 5 bit magnitude comparator?

If we want 5 bit magnitude comparator then we have to adjust one input line. HOW ? Every 7485 IC has three cascading input lines which can used in this case because we are using only one IC to make 7485 comparator. So, as shown in above diagram A>B is grouped with one of the input and A

What is the use of magnitude comparator?

Magnitude Comparator are digital circuits which have two ports which accept and have three single bit outputs. It is used to comparing individual bits, multi-bit comparators can be constructed to compare whole BCD words to produce an output if one word is larger, equal to or less than the other.

What is a 3 bit comparator?

A comparator that compares two binary numbers (each number having 3 bits) and produces three outputs based on the relative magnitudes of given binary bits is called a 3-bit magnitude comparator. 3-bit magnitude. The equal functions are A0 = B0, A1= B1, A2 = B2.

What are the two types of comparator?

Types of Comparators

• Mechanical Comparator.
• Mechanical-Optical Comparator.
• Reed Type Comparator.
• Electrical-Electronic Comparator.
• Pneumatic Comparator.

What are the basic comparator?

The comparator is an electronic decision making circuit that makes use of an operational amplifiers very high gain in its open-loop state, that is, there is no feedback resistor. In other words, the op-amp voltage comparator compares the magnitudes of two voltage inputs and determines which is the largest of the two.

Which is very widely used and popular combinational unit?

One of the most common uses of combinational logic is in Multiplexer and De-multiplexer type circuits. Here, multiple inputs or outputs are connected to a common signal line and logic gates are used to decode an address to select a single data input or output switch.

What are the types of comparator?

How is a 2 bit magnitude comparator used?

A comparator used to compare two binary numbers each of two bits is called a 2-bit Magnitude comparator. It consists of four inputs and three outputs to generate less than, equal to and greater than between two binary numbers. The truth table for a 2-bit comparator is given below:

What do you call a 4 bit comparator?

A comparator used to compare two binary numbers each of four bits is called a 4-bit magnitude comparator. It consists of eight inputs each for two four bit numbers and three outputs to generate less than, equal to and greater than between two binary numbers.

Which is the simplest multi-bit logic comparator?

• Equality comparators. • Magnitude comparators. An equality comparator, such as that illustrated in Fig 4.3.1 is the simplest multi-bit logic comparator, and can be used for such circuits as electronic locks and security devices where a binary password consisting of multiple bits is input to the comparator to be compared with another preset word.

When do you use a digital comparator in arithmetic?

Data comparison is needed in digital systems while performing arithmetic or logical operations. This comparison determines whether one number is greater than, equal, or less than the other number. A digital comparator is widely used in combinational system and is specially designed to compare the relative magnitudes of binary numbers.