## How many rows would a truth table for 4-bit magnitude comparator have?

The truth table for a 4-bit comparator would have 4^4 = 256 rows.

## How does a 4-bit magnitude comparator work?

4-Bit Magnitude 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.

**What are the logic conditions in comparator?**

A comparator compares two or more inputs using one, or a number of different comparisons. when the given relationship(s) is true, an output signal is given (logic 0 or logic 1). Comparators are only modeled using the if statement with an else clause and no else – if clauses.

**What are applications of magnitude comparator?**

These are used in control applications in which the binary numbers representing physical variables such as temperature, position, etc. are compared with a reference value. Comparators are also used as process controllers and for Servo motor control. Used in password verification and biometric applications.

### What is the importance of magnitude comparator?

Some commercially available digital comparators such as the TTL 74LS85 or CMOS 4063 4-bit magnitude comparator have additional input terminals that allow more individual comparators to be “cascaded” together to compare words larger than 4-bits with magnitude comparators of “n”-bits being produced.

### How does a 4 bit magnitude comparator work?

**Which one of the following is not true for magnitude comparator?**

Explanation: A comparator is a combinational circuit that takes two numbers as input in binary form and results whether one input is greater, lesser or equal to the other input. In a digital comparator, only 3 outputs are possible (i.e. A = B, A > B, A < B). So, a – b is an incorrect option.

**What is a 4-bit magnitude 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. In a 4-bit comparator the condition of A>B can be possible in the following four cases:

#### What is the truth table for a 4-bit comparator?

The truth table for a 4-bit comparator would have 4^4 = 256 rows. So we will do things a bit differently here. We will compare each bit of the two 4-bit numbers, and based on that comparison and the weight of their positions, we will draft a truth table. Now let’s derive the equations for the three outputs.

#### How many inputs and outputs does a 4-bit comparator have?

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. In a 4-bit comparator the condition of A>B can be possible in the following four cases: Similarly the condition for A

**What are the inputs and outputs of magnitude comparators?**

Suppose A and B are the two inputs of magnitude comparators. And the three outputs will be A > B, A = B and A < B. Moreover depending upon the comparison done, any one of the given outputs will be high. The truth table for 1 Bit Comparator is explained below: