GROL - General Radiotelephone Operator License Digital Logic and Microcomputers Questions and Answers

Question 1

In digital logic, which gate produces a HIGH output only when all of its inputs are LOW?

Accepted Answer

NOR

Answer

AND

Answer

OR

Answer

NAND

Question 2

A technician is reading a memory address from a microcomputer's diagnostic screen, which displays the hexadecimal value 2F. What is the decimal equivalent of this value?

Accepted Answer

47

Answer

31

Answer

52

Answer

29

Question 3

Which of the following best describes the primary characteristic of Random Access Memory (RAM) in a microcomputer system?

Accepted Answer

It is volatile memory that loses its contents when power is removed.

Answer

It is non-volatile and stores the system's boot-up instructions.

Answer

It is a type of permanent storage for user files and applications.

Answer

It can only be read from and cannot be written to by the CPU.

Question 4

In a microcomputer's architecture, what is the primary function of the address bus?

Accepted Answer

To specify the memory location or I/O port for a read or write operation.

Answer

To transfer data between the CPU and memory.

Answer

To carry control and timing signals to all components.

Answer

To supply electrical power to the microprocessor and peripherals.

Question 5

What is the fundamental purpose of a D-type flip-flop in a digital logic circuit?

Accepted Answer

To store a single bit of data.

Answer

To function as a free-running oscillator.

Answer

To amplify a weak digital signal.

Answer

To convert a digital signal to an analog signal.

Question 6

An Exclusive OR (XOR) gate is a fundamental logic component. Which of the following statements correctly describes its output behavior?

Accepted Answer

The output is HIGH if an odd number of inputs are HIGH.

Answer

The output is HIGH if and only if all inputs are HIGH.

Answer

The output is LOW if any of the inputs are HIGH.

Answer

The output is HIGH if any of the inputs are HIGH.