|Digital Teaching Aid (DED Philippinen, 86 p.)|
|Karnaugh Mapping - Lesson 4|
The starting point for digital circuit design is usually the truth table which gives us the following information:
Under which input condition occurs a certain output condition.
Two variable map
Fig. 4-1: Two variable Karnaugh map
The truth table outputs are translated into the Karnaugh map. Each position in the map represents a certain fundamental product.
Three variable map
Fig. 4-2: Three variable Karnaugh map
Four variable map
Many digital systems process 4 bit numbers. For this reason, logic circuits are often designed to handle 4 input variables.
(see Fig. 4-3)
Fig. 4-3: Four variable Karnaugh map