Combinational Logic Circuit

The combinational logic circuit in digital electronics is made up of logic gates.  The output of a combinational logic circuit is determined only by the current combination of the inputs at any given time.

A Combinational logic circuit performs only one operation, which may be logically specific or maybe a set of boolean functions.

The combinational logic circuit is made up of the interconnection of logic gates.

Combinational logic gates react to their inputs, signals, values, and production values ​​at the output signals.  

Apart from this, it also serves to transfer the binary information from the given input data to the required output data.




Binary Adder Subtractor

Digital computer does the processing of a lot of information, the tasks that have to be faced include many different arithmetic operations.

The most basic arithmetic operation among these operations is the addition of two binary digits.  

This simple operation is made up of four possible elementary operations.  Such as 0+0=0, 0+1=1, 1+0=1, and 1+1=10.

Of these operations, the first three operations generate a sum of a digit, but when both the read and add bits are equal to 1.  

Binary sum consists of two digits, the higher significant bit of this result is called the carry.


Half Adder

Half adder circuit requires two binary inputs and two binary outputs.

The truth table of the half adder is shown below,


Full Adder

In digital electronics, the full adder is a combinational circuit which is the arithmetic sum of three bits.

This adder is made up of three inputs and two outputs. These two input variables are denoted by x and y, which represent two significant bits to be added.

The third input z represents carry from the previous lower significant position.

The truth label of the full adder is shown below


Binary Adder

In digital electronics, a binary adder is a circuit that produces the sum of two binary numbers.

A binary adder can be made with a full adder connected to cascade. With each adder carrying the output connects to the input of the next full adder in series.


Half Subtractor

Half subtractor circuit requires two binary inputs and two binary outputs.

In Half Subtractor the symbols X and Y assign to the two inputs and symbols D and B assign to the two Outputs.

The truth table niche of the half subtractor is shown,


Full Subtractor

A full subtractor is a combinational circuit in digital electronics, and this subtractor performs an arithmetic subtraction operation of three bits.

The full subtractor is made up of three inputs and two outputs.

The truth table of the full subtractor is shown below,


What is a Magnitude Comparator?

In digital electronics magnitude comparator is a combinational circuit determines the relative magnitude and compares two numbers.

 


Types of logic gates

 Logic gates are basically of 7 types which are,


  1. AND Gate

  2. OR Gate

  3. NOT Gate

  4. NAND Gate

  5. NOR Gate

  6. XOR Gate

  7. XNOR Gate


 AND Gate 

 AND gate is a digital circuit that has more than one input and only one output, it is called AND gate.


 Truth Table

 A B Output

 0 0 0

 0 1 0

 1 0 0

 1 1 1



 OR Gate 

 OR Gate is also a digital circuit that has one or more inputs and only one output.


 Truth Table

 A B Output

 0 0 0

 0 1 1

 1 0 1

 1 1 1


 NAND Gate 

 NAND gate is also a digital circuit, which is a combination of NAND gate AND gate or NOT gate, in which the output of AND gate is reversed by NOT gate.  In this, due to the combination of AND Gate and NOT Gate, two or more inputs can be done but the output is only one.


 Truth Table

 A B Output

 0 0 1

 0 1 1

 1 0 1

 1 1 0


 NOR Gate 

 NOR Gate is also a digital circuit in which the time of NOR Gate is an OR Gate or NOT Gate, in which the output of the OR Gate is NOR.

 Truth Table

 A B Output

 0 0 1

 0 1 0

 1 0 0

 1 1 1


 XOR Gate 

 XOR gate is also a digital circuit that is a combination of AND, NOR, or OR gate, which is input to the two outputs obtained from AND and NOR gate, and this OR gate itself gives the output of the entire combination.


 Truth Table

 A B Output

 0 0 0

 0 1 1

 1 0 1

 1 1 0


 XNOR Gate 

 XNOR Gate is also a digital circuit that is the inverse of the XOR gate.  In which there is a combination of one AND or two NOR gates.


 Truth Table

 A B Output

 0 0 1

 0 1 0

 1 0 0

 1 1 1


XNOR Gate 

 XNOR Gate is also a digital circuit that is the inverse of the XOR gate.  In which there is a combination of one AND or two NOR gates.

 Truth Table

 A B Output

 0 0 1

 0 1 0

 1 0 0

 1 1 1



So friends, how did we like this post?  I hope you all must have liked this post of ours and through this post of ours, we have been able to convey some information to you.  If you like to read more posts like this, then you must mail us or tell us by commenting in the comment box.  We will bring you more such good and informative posts.  And do not forget to share this post of ours with your friends and on social media platforms so that more people can read this and get some information.  And also follow our social media pages so that you can get our play post or any update soon.  We will wait for your question and suggestion.





Comments

Post a Comment

Popular posts from this blog

Problem Solving Methodology and Techniques

Image
What is   Algorithm  ? The algorithm is defined as the step-by-step solving of a problem in the user's language.   It is considered an effective procedure for solving a problem with an infinite number of steps.  The characteristics of the algorithm are,  Precise  Unambiguous  Finite termination  Unique solution Once the algorithm is written, it can be coded into a problem using any programming language.  The algorithm uses 3 different constructs Sequence: sequence says that instructions are to be executed in what order or sequence. Branching or decision making: Branching involves testing or condition and based on the outcome of the condition testing different instruments are executed. Repetition: Repetition means one or more instructions shall be repeated several times.  This is otherwise called a loop.  There are different types of loops such as,  do-while, for What is    Pseudocode ? It is a concise descri...
Post

What is Internet how does it Work ?

Image
The Internet today is an amazing technology that knows everything. If the internet was not there, it would not have been as fast as the world is moving today. In today's time, everyone uses the internet and why should everything become so easy with the help of the internet.  But not as much as the Internet is beneficial, but it is also harmful. So if you also use the Internet, then you should know about the Internet.  That is why I have done this article for all of you so that everyone can understand the internet in a very easy and simple language. So let's know with complete information about the internet. What is the internet? The internet is that the largest network within the world, connecting many computers.  A network may be a group of two or more computer systems linked together. The internet is a wire that is in the sea around the world.  And this wire keeps information and data moving around the world. This data can be anything like text, mp3, document, imag...
Post

What is a Data Structure and its Types ?

Image
If you also like to read computer-related information or if you are a computer science student, then this post can be beneficial for you.  In this article, I have explained what is a data structure?  How many types of data are there?  And many more.  To understand the data structure, we need to know what is data.  So let's know about the data and its structure. What is Data ? Data is any row fact or value are called data. Value can be anything if there is any value like 1,2,3,4,5,6 all these have value means it is data.   If we talk about the second example, then a book is also data because it is a book, and the book has value.  Meaning that even the thing which has some value is called data. What is Information ? Information is processing data.  Meaning that if any data is on process mode then we can call that data information.   For example, if we talk about an example, I told you that "you come to me", so the one who told me is ...
Post