1. Determine the values of A, B, C, and D that make the sum term A+B+C+D equal to zero.
A.A = 1, B = 0, C = 0, D = 0
B.A = 1, B = 0, C = 1, D = 0
C.A = 0, B = 1, C = 0, D = 0
D.A = 0, B = 1, C = 0, D = 0
2. Which of the following expressions is in the sum-of-products (SOP) form?
A.(A + B)(C + D)
B.(A)B(CD)
C.AB(CD)
D.AB + CD
3. One of De Morgan's theorems states that X+Y=X.Y. Simply stated, this means that logically there is no difference between:
A.a NOR and an AND gate with inverted inputs
B.a NAND and an OR gate with inverted inputs
C.an AND and a NOR gate with inverted inputs
D.a NOR and a NAND gate with inverted inputs
4. The systematic reduction of logic circuits is accomplished by:
A.using Boolean algebra
B.symbolic reduction
C.TTL logic
D.using a truth table
5. An AND gate with schematic "bubbles" on its inputs performs the same function as a(n)________ gate.
A.NOT
B.OR
C.NOR
D.NAND
6. For the SOP expression A B C + ABC +A B C, how many 1s are in the truth table's output column?
A.1
B.2
C.3
D.5
7. A truth table for the SOP expressionA B C + A B C + A B C has how many input combinations?
A.1
B.2
C.4
D.8
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