Digital Electronics-Boolean Algebra and Logic Simplification
Digital Electronics-Boolean Algebra and Logic Simplification
21. Which of the examples below expresses the commutative law of multiplication?
- A + B = B + A
- AB = B + A
- AB = BA
- AB = A × B
22. The expression W(X + YZ) can be converted to SOP form by applying which law?
- associative law
- commutative law
- distributive law
- none of the above
23. The commutative law of addition and multiplication indicates that:
- we can group variables in an AND or in an OR any way we want
- an expression can be expanded by multiplying term by term just the same as in ordinary algebra
- the way we OR or AND two variables is unimportant because the result is the same
- the factoring of Boolean expressions requires the multiplication of product terms that contain like variables
24. Which of the following combinations cannot be combined into K-map groups?
- corners in the same row
- corners in the same column
- diagonal
- overlapping combinations
25. A variable is a symbol used to represent a logical quantity that can have a value of 1 or 0.
- TRUE
- FALSE
26. The OR function is Boolean multiplication and the AND function is Boolean addition.
- TRUE
- FALSE
29. The VHDL editor provided with a schematic editor development system will produce a file with the extension .vhd, which can be used by the simulator to test the output of the logic design.
- TRUE
- FALSE
30. In the commutative law, in ORing and ANDing of two variables, the order in which the variables are ORed or ANDed makes no difference.
- TRUE
- FALSE