# What is a 4-bit comparator IC?

## What is a 4-bit comparator IC?

The 4-bit comparator is mostly available in IC form and common type of this IC is 7485. This IC can be used to compare two 4-bit binary words by grounding I (A>B), I (A

### How many OR gates are required for 4-bit magnitude comparator?

Optimized Logic diagram of 4-bit magnitude comparator: There are 5 gates of AND or NOR used with the different number of inputs but in both of them the principal of layout is same.

**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 is multi bit comparator?**

Multi-bit comparators can be constructed to compare whole binary or BCD words to produce an output if one word is larger, equal to or less than the other. A very good example of this is the 4-bit Magnitude Comparator.

## Where are comparators used?

Comparators are used in central processing units (CPUs) and microcontrollers (MCUs). Examples of digital comparator include the CMOS 4063 and 4585 and the TTL 7485 and 74682. Note: An XNOR gate is a basic comparator, because its output is “1” only if its two input bits are equal.

### Whats a comparator do?

A comparator circuit compares two voltages and outputs either a 1 (the voltage at the plus side) or a 0 (the voltage at the negative side) to indicate which is larger. Comparators are often used, for example, to check whether an input has reached some predetermined value.

**Which gate is used as comparator?**

Note: An XNOR gate is a basic comparator because its output is “1” only if its two input bits are equal.

**What is a 8 bit comparator?**

8-Bit Magnitude Comparator – Comparators with three output terminals and checks for three conditions i.e greater than or less than or equal to is magnitude comparator. The Comparator is another very useful combinational logic circuit used to compare the value of two binary digits.

## What is N bit comparator?

… comparator forms a combinational circuit to compare two numbers, let A and B, and lastly determine their comparative magnitudes and by this means relation between the two(equal to, less than, greater than). Fig. 1 depicts the fundamental block of N bit magnitude comparator. Context 2.

### Why is comparator needed?

Comparators are used to find-out deviation of dimensions between a given component being checked and a known datum. The indicated difference in the dimensions is usually small and hence suitable magnification device should be employed to obtain the desired accuracy of measurements.

**Why do we use comparator?**

Comparator can be used to compare instances of different classes. Comparable is implemented by the class which needs to define a natural ordering for its objects. For example, String implements Comparable.

**What are the types of comparator?**

Types of Comparators

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