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Binary digits used in Boolean logic

Aviation Mechanic General (AMG) practice question 41 of 41 on Fundamentals of Electricity and Electronics. ACS element AM.I.A.K23 · difficulty: recall. Want to answer it in a timed quiz? Use the Aviation Mechanic General (AMG) practice mode.

Question bank updated 2026-09-22

QUESTIONIn the binary system used by digital computers, the two truth values of Boolean logic are represented by which digits?

  1. AThe digits 1 and 0
  2. BThe digits 0 through 7 only
  3. CThe digits 0 through 9 in sequence
Show the answer and explanation

Correct answer: A. The digits 1 and 0

  • A — correct Boolean logic is employed in the binary system because its only truth values, true and false, can be represented by the binary digits 1 and 0.
  • B — incorrect A set of eight digits is not the binary system; binary carries only the two values that correspond to true and false.
  • C — incorrect A ten-digit counting sequence is not what digital computers use to hold a Boolean truth value, which has only two states.

BACKGROUND

Boolean logic is a symbolic system used to represent the truth value of statements, and it is employed in the binary system used by digital computers. The reason is that the only truth values, true and false, can be represented by the binary digits 1 and 0. A circuit in computer memory can be open or closed depending on the value assigned to it, which matches those two digits directly. The fundamental Boolean operators are "and," "or," and "not," and combinations of these make up 13 other operators. An inverter acts on a single binary digit, converting a 1 to a 0 or a 0 to a 1.

STUDY TIP

Fix in your mind that binary means exactly two states, and tie each state to something physical you can picture, such as a memory circuit that is open or closed. When a digital logic question offers a choice with more than two values, it is not describing binary.

KEY POINTS

  • Boolean logic has only two truth values: true and false.
  • Digital computers represent those values with the binary digits 1 and 0.
  • An inverter flips a binary digit, changing a 1 to a 0 or a 0 to a 1.

SOURCES

  • FAA-H-8083-30B ch12 "Basic Logic Circuits"
  • FAA-H-8083-30B ch12 "The Inverter Logic"
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SkyDrill is not affiliated with the FAA. This is an original practice item based on FAA-H-8083-30B Aviation Maintenance Technician Handbook – General, 14 CFR part 43 and part 65. Regulations and handbooks are revised; confirm details against the current edition.