GROL Digital Logic and Microcomputers 2

Question 1

What is the output of an XNOR gate when both inputs are logic 1?

Accepted Answer

Logic 1

Answer

An XNOR gate outputs logic 1 when both inputs are the same (both 0 or both 1).

Question 2

Which Boolean expression represents De Morgan's theorem applied to the expression NOT(A AND B)?

Accepted Answer

NOT(A) OR NOT(B)

Answer

De Morgan's theorem states NOT(A AND B) = NOT(A) OR NOT(B).

Question 3

A NAND gate with all inputs tied together functions as which logic gate?

Accepted Answer

NOT gate (inverter)

Answer

Tying all NAND inputs together makes it behave as a NOT gate, outputting the complement of the single input.

Question 4

In a sum-of-products (SOP) Boolean expression, terms are combined using which operation at the top level?

Accepted Answer

OR

Answer

In SOP form, product (AND) terms are summed (OR'd) together at the top level.

Question 5

What is the hexadecimal equivalent of binary 1010 1111?

Accepted Answer

AF

Answer

Binary 1010 = hex A and binary 1111 = hex F, so 10101111 = AF in hexadecimal.

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