WorksheetsDigital Electronics Quiz
Total questions: 20
Worksheet time: 10mins
Which of the following best describes a register in digital electronics?
A group of flip-flops with a common clock input used to store and shift binary data.
A single flip-flop used to store one bit of data.
A device used to amplify signals in a circuit.
A resistor used to limit current in a circuit.
What is the primary function of a counter in sequential circuits?
To count sequences using two or more flip-flops.
To amplify binary signals.
To store analog data.
To convert binary data to analog signals.
What is a shift register used for?
To multiply binary data
To store binary data and shift it left or right when a shift signal is applied
To add binary numbers
To convert analog signals to digital
What is the sequence of states when the up-down counter counts down starting from 111?
111, 110, 101, 100, 011, 010, 001, 000
111, 000, 001, 010, 011, 100, 101, 110
111, 101, 011, 001, 000, 010, 100, 110
111, 011, 001, 101, 000, 110, 010, 100
What happens when the Load signal is set to 0 in a register?
The register is not clocked and holds its present value.
The register loads new data on the next clock edge.
The register resets all outputs to zero.
The register shifts data to the left.
If SI = 1 in a shift register, what value is shifted into the register?
0
1
Q3
D0
Which input combination for an S-R flip-flop is not allowed?
S = 0, R = 0
S = 1, R = 1
S = 0, R = 1
S = 1, R = 0
According to the J-K flip-flop input table, what are the values of J and K when Q = 0 and Q+ = 1?
J = 1, K = X
J = 0, K = 1
J = X, K = 0
J = 0, K = 0
Which of the following is the characteristic equation for a D flip-flop?
Q⁺ = D
Q⁺ = R'(S + Q)
Q⁺ = (G + Q)(G' + D)
Q⁺ = (J + Q)(K' + Q')
If J = 1 and K = 1 in a J-K flip-flop when Clock = 0, what will happen to Q after the rising edge?
Q will be set to 1
Q will be set to 0
Q will toggle its state
Q will remain unchanged
Which of the following is NOT one of the three main aspects covered by Computer Architecture (CA)?
Computer Hardware
Computer Software
Instruction Set Architecture
Computer Organization
List the five functionally independent main parts of a computer as described in the document.
Input, Memory, ALU, Output, Control units
Input, Output, Storage, Monitor, Keyboard
CPU, RAM, Hard Disk, Mouse, Printer
Input, Output, Software, Hardware, Network
Which of the following are the two main parts of an instruction in computer organization?
Memory and Processor
Register and ALU
Operation code (Opcode) and Operands
Address and Data Bus
What is the first step in executing the instruction "ADD LOCA, R0"?
Store the result in R0
Fetch the operand at location LOCA from main-memory into the processor
Fetch the instruction from main-memory into the processor
Add the memory operand to the contents of register R0
What is the role of the Memory Address Register (MAR)?
Holds the address of the memory-location to be accessed
Contains the instruction being executed
Performs arithmetic operations
Generates timing signals
What is the main advantage of a single bus structure?
Low cost and flexibility for attaching peripheral devices.
Ability to perform multiple transfers at the same time.
Increased speed due to parallel processing.
Reduced need for buffer registers.
What is the main advantage of using cache memory in a computer system?
It increases the size of the hard disk.
It allows faster access to frequently used instructions and data.
It reduces the need for a processor.
It eliminates the need for main memory.
Which instruction type uses the syntax "Opcode Source1, Source2, Destination"?
One Address
Two Address
Three Address
Zero Address
What are the two basic memory operations in computer organization?
Fetch and Execute
Read and Writeback
Load and Store
Push and Pop
Which instruction type is responsible for arithmetic and logic operations on data?
ADD, SUB, MUL, DIV, AND, OR, NOT
MOV, PUSH, POP, XCHG
CALL, RET, LOOP, INT
IN, OUT
