Digital Electronics Principles Flashcards
7 cards from real ISCET practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Digital Electronics Principles flashcards as text
What is the output of a NAND gate when both inputs are HIGH?
Answer: LOW
A NAND gate outputs LOW only when all inputs are HIGH, making it the complement of an AND gate.
Which number system uses base 16 with digits 0–9 and letters A–F?
Answer: Hexadecimal
Hexadecimal (base-16) uses digits 0–9 and letters A–F to represent values 0 through 15.
In a D flip-flop, what happens to the output Q on the active clock edge when D = 0?
Answer: Q becomes 0
A D flip-flop transfers the D input directly to Q on the active clock edge, so Q = 0 when D = 0.
What Boolean expression represents a 2-input XOR gate?
Answer: A⊕B = A'B + AB'
XOR (exclusive-OR) outputs HIGH when inputs differ: A'B + AB' is the canonical SOP form.
How many bits are required to uniquely represent 32 different states?
Answer: 5
2⁵ = 32, so exactly 5 bits are needed to represent 32 unique states.
Which logic family is characterized by very low power consumption and high noise immunity, making it dominant in modern ICs?
Answer: CMOS
CMOS draws negligible static current and offers wide noise margins, making it the standard for modern digital ICs.
What is the decimal equivalent of the binary number 1011₂?
Answer: 11
1011₂ = 1×8 + 0×4 + 1×2 + 1×1 = 8+2+1 = 11₁₀.