What is comparator logic circuit?
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 circuit in digital electronics?
A magnitude digital Comparator is a combinational circuit that compares two digital or binary numbers in order to find out whether one binary number is equal, less than or greater than the other binary number.
What is the working principle of magnitude comparator?
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 do you make a comparator circuit?
Then the voltage levels between these two upper and lower reference voltages is called the “window”, hence its name. Using our idea above of a voltage divider network, if we now use three equal value resistors so that R1 = R2 = R3 = R we can create a very simple window comparator circuit as shown.
What type of circuit do comparators use?
Op-amp window comparators are a type of voltage comparator circuit which uses two op-amp comparators to produce a two-state output that indicates whether or not the input voltage is within a particular range or window of values by using two reference voltages. An upper reference voltage and a lower reference voltage.
Can op amps be used as comparators?
These circuits used negative feedback, which normally keeps the op amp operating in the linear region. However, op amps can also be used as comparators, which causes them to operate non-linearly. The inputs are driven hard and the output voltage slams to the power supply rail.
How does a latching circuit work?
In Electronics, Latch Circuit is a circuit which locks its output, when a momentarily input trigger signal is applied, and retains that state, even after the input signal is removed. This State will remain indefinitely until the power is reset or some external signal is applied.
Is latch a sequential circuit?
Latches are level-sensitive devices. Latches are useful for the design of the asynchronous sequential circuit. SR (Set-Reset) Latch – SR Latch is a circuit with: (i) 2 cross-coupled NOR gate or 2 cross-coupled NAND gate.
How is a comparator used in a logic circuit?
A comparator is a combinational logic circuit that compares input bits and gives an output that indicates the equality/inequality.
How is magnitude comparator used in combinational circuit?
So comparator is used for this purpose. Magnitude comparator is a combinational circuit that compares two numbers, A and B, and determines their relative magnitudes (Fig.1). The outcome of comparison is specified by three binary variables that indicate whether A>B, A=B, or A
Which is a 4 bit magnitude comparator in logic?
By using these Boolean expressions, we can implement a logic circuit for this comparator as given below: A comparator used to compare two binary numbers each of four bits is called a 4-bit magnitude comparator.
What is the purpose of a digital comparator?
A digital comparator’s purpose is to compare numbers and represent their relationship with each other. In this post, we will make different types of comparators using digital logic gates. We will begin by designing a simple 1-bit and 2-bit comparators. The circuit for a 4-bit comparator will get slightly more complex. Let’s begin.