Table of Contents
What is a 4-bit magnitude comparator?
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.
Which is a 4-bit magnitude 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
Which IC is required to implement a 4-bit comparator?
74LS85
For Implement 4-Bit Magnitude Comparator using IC-74LS85:
| IC Number | IC Name |
|---|---|
| 74LS85 | 4-Bit Magnitude comparators |
What is magnitude comparator explain?
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. Comparators are used in central processing units (CPUs) and microcontrollers (MCUs).
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.
How many 4 input LUTs will a 4-bit comparator require?
But for 4-input comparator, the logic utilization is three 4-input LUTs and MUX.
What is comparator circuit?
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.
How many types of magnitude comparator are there?
Types of Magnitude Comparators: 1-bit magnitude comparator. 2-bit magnitude comparator. 3-bit magnitude comparator. 4-bit magnitude comparator.
Where are comparators used?
Explanation: Comparators are used in the central processing unit (CPUs). Because all the arithmetic and logical operations are performed in the ALU(Arithmetic Logic Unit) part of the CPU.
How do you make a 4-bit comparator?
Algorithm of 4-bit comparator: Now let us consider two numbers, A and B, with four digits each. Then, write the coefficients of the numbers in descending order. It comprises of eight inputs each for two 4- bit numbers to generate three outputs that are less than, equal to and greater than in between two binary numbers.
What is the function of LUT?
Description. A LUT function is a lookup table (LUT) object (derived from ml. LUTFunction ) that specifies, how one-dimensional index values are mapped to n-dimensional output values, mainly for visualization purposes.
How many possible functions can be implemented with a 4 LUT?
224 different functions
If there is a Look-Up Table (LUT) which has ‘a’ number of inputs, we can have 22a possible functions. For example, 4-LUT(4-input LUT) can represent 224 different functions.
Why is comparator used?
What are the types of comparator?
Types of Comparators
- Mechanical Comparator.
- Mechanical-Optical Comparator.
- Reed Type Comparator.
- Electrical-Electronic Comparator.
- Pneumatic Comparator.
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.
What is CLB in VLSI?
In computing, a logic block or configurable logic block (CLB) is a fundamental building block of field-programmable gate array (FPGA) technology. Logic blocks can be configured by the engineer to provide reconfigurable logic gates.
What is inside a LUT?
Internally, LUTs comprise of 1-bit memory cells (programmable to hold either ‘0’ or ‘1’) and a set of multiplexers. One value among these SRAM bits will be available at the LUT’s output depending on the value(s) fed to the control line(s) of the multiplexer(s).
What is LUT made of?
What are uses of comparator?
A comparator consists of a specialized high-gain differential amplifier. They are commonly used in devices that measure and digitize analog signals, such as analog-to-digital converters (ADCs), as well as relaxation oscillators.
What are the 4-bit magnitude comparator design equations for the truth table?
AZOJETE, 9: 9-16, 2013 2.2 The 4-Bit magnitude comparator design equations The Boolean expressions (Anil, 2007) representing the conditions shown in the truth table (Table 1) are: where X, Y, and Z are the three variables which represent the conditions A=B, A>B, and A
What is a magnitude comparator?
The magnitude comparator comes in the form of an Integrated Circuit (IC) form. The IC can be based on TTL (Transistor Transistor Logic) technology or it can be based on CMOS (Complementary Metal Oxide Semiconductor) technology (Fairchild Semiconductor, 1999).
How many inputs are there in a 4-bit comparator?
Thus, for 4-bit comparator, the inputs will be 2×4 = 8 inputs and the entries in the truth table will be 22×4 = 28 = 256.