Digital Electronic

4.1.1 : How are digital electronic circuits constructed?

Digital electronics are often constructed from small electronics circuits called logic gates.
Most electronics engineers , the terms "digital circuit" and "Logic Circuit" are interchangeable.

4.1.2 : What are logic gates ?

Logic gates are electronic circuits that produce the basic logic operations. These gates include the AND gate , OR gate and NOT gate.

4.1.3 : Boolean Expression For AND , OR and NOT gates.

AND gate

OR gate

NOT gate

From red group we get product term — A’C

From green group we get product term— AB

Summing these product terms we get- Final expression (A’C+AB)

What is KARNAUGH MAP?

Select K-map according to the number of variables.
Identify minimum terms or maximum terms as given in problem.
Put 1’s in blocks of K-map respective to the Output X and Y table
Make rectangular groups containing total terms in power of two like 2,4,8 ..(except 1) and try to cover as many elements as you can in one group.

5. From the groups made in step 4 find the product terms and sum them up for SOP form.

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