Digital Logic and Circuit Design Flashcards
6 cards from real B CompE Bachelor of Computer Engineering practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Digital Logic and Circuit Design flashcards as text
What is the hexadecimal representation of the binary number 11110000?
Answer: F0
Splitting 11110000 into two nibbles: 1111 = 0xF and 0000 = 0x0, so the result is 0xF0.
What is the purpose of a multiplexer (MUX) in digital circuits?
Answer: Select one of many input signals and forward it to a single output
A multiplexer selects one of several input lines based on select signals and routes it to a single output line.
Which Boolean theorem states that A + A = A and A AND A = A?
Answer: Idempotent Law
The Idempotent Law states that ORing or ANDing a variable with itself returns the same variable: A+A=A and A.A=A.
In a full adder, how many inputs does it take?
Answer: 3
A full adder takes three inputs: two significant bits (A and B) and a carry-in (Cin), producing a sum and carry-out.
Which type of counter uses a sequence where only one bit changes between consecutive states?
Answer: Gray code counter
A Gray code counter uses the Gray code sequence where only one bit changes between consecutive values, minimizing switching errors.
What is the two's complement of the binary number 0110?
Answer: 1010
Two's complement of 0110: invert all bits to get 1001 (one's complement), then add 1 to get 1010.
How this page was made: written with AI tools and published by Nathan Beja, founder of Practice Test Geeks, who is responsible for its content. We have not yet matched this exam's facts to an official source, so confirm fees, dates and rules with the exam body. Not reviewed by a subject-matter expert. Editorial policy