Question
Download Solution PDFWhat is entered variable map?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFVariable Entrant Map (VEM)
K-map is the best manual technique to solve Boolean equations, but it becomes difficult to manage when the number of variables exceeds 5 or 6.
So, a technique called Variable Entrant Map (VEM) is used to increase the effective size of the k-map.
It allows a smaller map to handle a large number of variables. This is done by writing output in terms of input.
Example: A 3-variable function can be defined as a function of 2 variables if the output is written in terms of a third variable.
Consider a function F(A,B,C) = (0,1,2,5)
|
A |
B |
C |
F |
|
0 |
0 |
0 |
1 |
|
0 |
0 |
1 |
1 |
|
0 |
1 |
0 |
1 |
|
0 |
1 |
1 |
0 |
|
1 |
0 |
0 |
0 |
|
1 |
0 |
1 |
1 |
|
1 |
1 |
0 |
0 |
|
1 |
1 |
1 |
0 |
If we define F in terms of ‘C’, then this function can be written as:
|
A |
B |
F |
|
0 |
0 |
1 |
|
0 |
1 |
\(\overline {C}\) |
|
1 |
0 |
C |
|
1 |
1 |
0 |
Last updated on Jun 27, 2025
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