Which logic gate can be used as comparator?
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.
What is comparator logic design?
Comparator is a combinational logic circuit that compares the magnitudes of two binary quantities to determine which one has the greater magnitude. In other word, a comparator determines the relationship of two binary quantities. A exclusive−OR gate can be used as a basic comparator.
What is comparator in logic circuit?
A logic comparator is made by two AND gates, Two inverter/NOT gates, and one NOR gate to be. It takes two inputs and compare the two inputs and produce an output, based on the condition or values of the two inputs. Two common types of digital comparators exist, an Identity. comparator and a Magnitude comparator.
Which gate is used for 2 bit comparator?
logic gate
The design, simulation and analysis of 2-bit comparator using SET based logic gate is presented. The circuit compares a pair of 2 bit inputs and produces outputs A>B , A=B and A
How are comparators used in logic AND gate?
When you’ve got some comparators either already in your circuit or built into your MCU, there are some handy tricks you can use. The following will show you how you can use a comparator to make a Logic AND Gate. Resistors 3 and 4 are used to bias the non inverting input while resistors 1 and 2 are used to average the two inputs.
How are the Cascade inputs of a least significant comparator connected?
To ensure a correct comparison, the cascade inputs of the first (least significant) comparator should be connected as follows: AB (pin 4) = logic 0. A=B (pin 3) = logic 1. This also applies to a single IC if only two 4-bit words are being compared.
What is the purpose of a 1 bit comparator?
Comparator – Designing 1-bit, 2-bit and 4-bit comparators using logic gates A Comparator is a combinational circuit that gives output in terms of A>B, A
Which is the magnitude comparator for Gate 1?
A simple 1-bit magnitude comparator is shown in Fig 4.3.2. Gate 1 produces the function A>B and gate 3 gives A