Digital Logic and Microprocessors Flashcards
7 cards from real BEE 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 Logic and Microprocessors flashcards as text
Which of the following is a universal gate?
Answer: NAND
NAND is a universal gate because any Boolean function can be implemented using only NAND gates.
What is the decimal equivalent of the 2's complement binary number 11110000?
Answer: -16
11110000 in 2's complement: invert to 00001111 = 15, add 1 = 16, so the value is -16.
In a D flip-flop, what is the relationship between output Q and input D at the clock edge?
Answer: Q becomes D
A D flip-flop captures the value of D at the active clock edge and transfers it to Q.
A multiplexer (MUX) with 3 select lines has how many data inputs?
Answer: 8
A MUX with n select lines has 2^n data inputs; 2^3 = 8 data inputs.
Which interrupt type cannot be disabled by software in most microprocessors?
Answer: Non-maskable interrupt (NMI)
Non-maskable interrupts (NMI) cannot be disabled by the programmer and are used for critical hardware events.
In synchronous sequential logic, what determines when state transitions occur?
Answer: The clock signal
In synchronous circuits, all state transitions are triggered by the clock signal's active edge.
What does the acronym ALU stand for in microprocessor architecture?
Answer: Arithmetic Logic Unit
ALU stands for Arithmetic Logic Unit, the component that performs arithmetic and logical operations.