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Binary Logic and Circuits Quiz

Binary Logic and Circuits: ten questions on binary numbers, gates, and hardware. Includes calculations; every answer is explained.

Free, with no sign-up.

ByLelfy Editorial Team

For High school students and adults reviewing the topic.

About 11 minutes. 10 questions.

How does it work?

  1. Choose one answer or enter a number as requested, then check it.
  2. Read the explanation before continuing.
  3. Round only the final answer to the precision requested.

What will you get?

See your score and review the reasoning behind each answer.

Question 1Convert the unsigned binary number 10110 to decimal. Enter a whole number.

Answers within 0.5 of the expected value are accepted.

Question 2On a counter, the display reads decimal 19. Express it in unsigned binary, entering just the whole-number digits 0 and 1.

Answers within 0.5 of the expected value are accepted.

Question 3A device reserves 5 bits for a status code. How many distinct patterns fit? Enter a whole number.

Answers within 0.5 of the expected value are accepted.

Question 4Signals have A = 1 and B = 0. Evaluate A AND (NOT B), entering the whole-number bit 0 or 1.

Answers within 0.5 of the expected value are accepted.

Question 5At a circuit input, A = 0 and B = 0. Evaluate NOT (A OR B), entering the whole-number bit 0 or 1.

Answers within 0.5 of the expected value are accepted.

Question 6A program stores a small text character on a processor described as 64-bit. What does the processor label establish?
Question 7A half adder receives A = 1 and B = 0. Which pair reports its sum bit followed by its carry bit?
Question 8For input pairs 00, 01, 10, 11 in that order, which sequence gives an XOR gate’s outputs?
Question 9A circuit diagram has a NAND symbol, while its chip layout shows several transistors. What explains the difference?
Question 10The same stored bit pattern is read once as an integer and once as a character. What determines the interpretation?

Answer every question to see and share your score.

Read the topic guide