LET"S PLAY LOGIC GAME

A device used to display one or more digital signals so that they can be compared to expected timing diagrams for the signals is a:

• Spectrum analyzer

• Oscilloscope

• Logic Analyzer

• Digital multimeter

When used with an IC, what does the term "QUAD" indicate?

• 2 circuits

• 4 circuits

• 6 circuits

• 8 circuits

Which of the following logical operations is represented by the + sign in Boolean algebra?

• OR gate

• AND gate

• XOR gate

• NAND gate

A truth table illustrates how the input level of a gate responds to all the possible output level combinations.

• TRUE

• FALSE

Answer explanation

A truth table will illustrate how the "output level" of a gate responds to all the possible "input level" combinations. So it is false.

The output of a NOR gate is HIGH if ________.

• all inputs are LOW

• any input is HIGH

• any input is LOW

• all inputs are HIGH

The Boolean expression for a 3-input AND gate is ________.

• X = A.B

• X =AB+C

• X = A+B+C

• X=ABC

The output of an exclusive-OR gate is HIGH if ________.

• all inputs are LOW

• all inputs are HIGH

• the inputs are unequal

• None of the above

The logic expression for a NOR gate is ________

What is the logic symbol ?

• AND gate

• NAND gate

• NOR gate

• EX-NOR Gate

The basic logic gate whose output is the complement of the input is the:

• OR gate

• AND gate

• NAND gate

• NOT gate