EDPT Boolean Logic and Binary Operations 3

Question 1

A NAND gate with inputs A=1 and B=1 outputs:

Accepted Answer

0

Answer

NAND is the inverse of AND; since 1 AND 1 = 1, NOT(1) = 0.

Question 2

A NOR gate outputs 1 when:

Accepted Answer

Both inputs are 0

Answer

NOR is the inverse of OR, outputting 1 only when all inputs are 0.

Question 3

How many rows does a truth table for 3 input variables contain?

Accepted Answer

8

Answer

A truth table for n variables has 2^n rows; for 3 variables, that is 2^3 = 8.

Question 4

The Boolean notation A' (A prime) represents which operation?

Accepted Answer

NOT

Answer

The prime symbol (') in Boolean algebra denotes the NOT operation, or complement of A.

Question 5

An XOR gate outputs 1 when:

Accepted Answer

The inputs are different

Answer

XOR outputs 1 only when the two inputs have different values.

EDPT - Electronic Data Processing Test Practice Test