Table of Contents
- 1 How does a 4 bit comparator work?
- 2 How do you make an 8-bit comparator?
- 3 What is8 input magnitude comparator?
- 4 Why is comparator needed?
- 5 What are the gates in the one bit binary comparator?
- 6 What is comparator and its application?
- 7 How does magnitude comparator work?
- 8 What is the drawback in zero crossing detector?
How does a 4 bit comparator work?
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.
How do you make an 8-bit comparator?
For the lower order comparator, the A=B cascade input must be connected high, while the other two cascading inputs A, B must be connected to low. The outputs of the higher order comparator become the outputs of this 8-bit comparator. The above diagram shows the 8-bit comparator circuit.
How many outputs does an 8-bit comparator show?
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.
What is8 input magnitude comparator?
The 74HC688 is an 8-bit magnitude comparator. It performs comparisons of two 8-bit binary or BCD words. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of V CC.
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.
How does the comparator work?
The comparator circuit work by simply taking two analog input signals, comparing them and then produce the logical output high “1” or low “0“. When the analog input on non-inverting is less than the analog input on inverting input, then the comparator output will swing to the logical low.
What are the gates in the one bit binary comparator?
One-bit reversible binary comparator consists of three PG and four CNOT gates. It has five inputs viz., P n (AEB), Q n (AGB), R n (ALB), A n-1 and B n-1 and three outputs Q n-1 i.e., AGB, P n-1 i.e., AEB and R n-1 i.e., ALB as shown in the Figure 6.
What is comparator and its application?
A comparator is an electronic component that compares two input voltages. Comparators are closely related to operational amplifiers, but a comparator is designed to operate with positive feedback and with its output saturated at one power rail or the other.
Under which condition will a comparator have a output?
The comparator output only takes one of two possible states: “high state or low state”. In order to explain the circuit operation, voltage vA is assumed at its high state (assuming the opposite is also possible, in order to reach the same result).
How does magnitude comparator work?
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. The analog equivalent of digital comparator is the voltage comparator.
What is the drawback in zero crossing detector?
What is the drawback in zero crossing detectors? Explanation: Due to low frequency signal, the output voltage may not switch quickly from one saturation voltage to other. The presence of noise can fluctuate the output between two saturation voltages.
What does a Redstone comparator do?
A redstone comparator is a block used in redstone circuits to maintain, compare, or subtract signal strength, or to measure certain block states (primarily the fullness of containers).