definitions

Test your knowledge on a wide range of topics related to digital electronics and logic circuits! This quiz covers essential terms and concepts, including analog and digital signals, logic gates, memory types, data encoding, counters, flip-flops, and more. Whether you’re a student, a hobbyist, or a professional in the field, this quiz will challenge your understanding and help you reinforce your knowledge in the following areas:

Basic Concepts: Analog, Digital, Binary, Bit
Signals and Timing: Pulse, Duty Cycle, Clock, Timing Diagram
Data Handling: Serial, Parallel, Data, ASCII, Hexadecimal, BCD
Logic Gates and Circuits: AND, OR, NOT, NAND, NOR, XOR, XNOR, Inverters
Memory and Storage: RAM, ROM, SRAM, DRAM, Flash Memory, Cache
Counters and Registers: Ripple Counter, Synchronous Counter, Up-Down Counter, Registers
Programmable Logic Devices: SPLD, CPLD, FPGA, PAL, GAL
Microprocessors and Microcontrollers: CPU, ALU, Interrupts, DMA, System on Chip
Communication and Data Transfer: USB, RS-232, SCSI, Bus Protocols
Signal Processing: ADC, DAC, DSP, Sampling, Quantization
Error Detection: Parity Bit, Cyclic Redundancy Check (CRC)
Dive into our multiple-choice questions to test your knowledge, identify areas for improvement, and solidify your understanding of digital electronics and logic circuits. Good luck and happy quizzing

1 / 156

What is a flip-flop memory?

A type of memory where data is stored using flip-flops

A memory component that stores data in capacitors

A type of ROM that is used for long-term storage

A method for encoding binary data

2 / 156

What is a synchronous counter?

A counter where all flip-flops are clocked simultaneously by the same clock signal

A counter where flip-flops are clocked by different signals

A counter that only counts in ascending order

A counter used for analog signal processing

3 / 156

What is a ripple counter?

A counter that counts at a faster rate

A counter where the carry-out of one flip-flop is connected to the clock input of the next flip-flop

A counter that only counts in binary format

A counter used for analog signal processing

4 / 156

What is an up-down counter?

A counter that stores data in memory

A counter that only counts in descending order

A counter that only counts in ascending order

A counter that can count both upwards and downwards based on control inputs

5 / 156

What is a terminal count in counters?

The method of encoding counter values

The count value at which a counter completes its counting sequence and recycles

The rate at which a counter updates its count

The technique for increasing counting speed

6 / 156

What does synchronous mean in state machines?

State transitions occur independently of a clock signal

State transitions are coordinated with a common clock signal

The system can only handle one state at a time

The system is designed for analog signal processing

7 / 156

What does decade refer to in counters?

A method of encoding binary data

A type of memory used for counting

A technique for signal amplification

A counter with ten unique states or counts before recycling

8 / 156

What is modulus in digital counters?

The technique of increasing counter speed

The method of encoding counter values

The rate at which a counter updates its count

The number of unique states a counter can count before recycling

9 / 156

What does recycle mean in the context of counters?

The process of resetting a counter to its initial state after reaching its maximum count

The method of increasing counting speed

The technique for storing counter values

The process of converting binary counts to decimal

10 / 156

What does asynchronous mean in state machines?

The system can only process one state at a time

State changes are synchronized with a common clock signal

State changes occur independently of a clock signal

The system is designed for analog signal processing

11 / 156

What is a state machine?

A model of a system that transitions between different states based on inputs and outputs

A device that amplifies signals

A method for encoding data

A type of memory storage

12 / 156

What does bidirectional mean in the context of registers?

The process of increasing data storage capacity

The ability of a register to read from and write to memory or another register

The method of encoding data

The technique of amplifying signals

13 / 156

What does load mean in relation to registers?

The process of transferring data into a register

The method of storing data in memory

The technique of encoding data

The process of increasing data retrieval speed

14 / 156

What is a stage in the context of registers?

A technique for signal amplification

A type of memory access method

A method for increasing data storage capacity

A step in a sequential operation where data is processed or transferred

15 / 156

What is a register in digital electronics?

A component used for data encoding

A device for amplifying signals

A storage element used to hold data temporarily

A type of memory storage

16 / 156

What does astable mean in the context of timers?

A circuit that continuously oscillates between two states without requiring external triggering

A device that stabilizes input signals

A type of signal amplifier

A method of data encoding

17 / 156

What is a timer in electronics?

A technique for encoding binary data

A method for increasing signal strength

A device that measures and controls time intervals in a circuit

A component used for data storage

18 / 156

What does monostable mean in electronics?

A circuit that has one stable state and generates a pulse when triggered

A circuit that can stabilize multiple states

A device used for amplifying signals

A method for storing data

19 / 156

What is a one-shot in digital electronics?

A type of logic gate

A device that continuously generates pulses

A circuit that generates a single pulse of a specified duration in response to an input trigger

A method for increasing data storage

20 / 156

What does power dissipation mean in digital circuits?

The amount of power needed for circuit operation

The technique of amplifying weak signals

The process of increasing the voltage in a circuit

The amount of electrical power converted into heat

21 / 156

What does hold time refer to in flip-flops?

The delay in signal propagation

The time required to initialize a circuit

The duration for which a flip-flop holds its state

The minimum time an input signal must remain stable after the clock edge

22 / 156

What is set-up time in digital circuits?

The minimum time required for an input signal to be stable before the clock edge occurs

he time needed to initialize a flip-flop

The duration for which a signal needs to be stable after a clock edge

The time it takes to configure a memory device

23 / 156

What is propagation delay time in flip-flops?

The delay in signal amplification

The time taken to read data from memory

The time required for a flip-flop to toggle between states

The time it takes for a change in the input to affect the output

24 / 156

What does clear mean in a flip-flop?

To amplify the signal strength

To store the current state of the flip-flop

To reset the output to a low state regardless of other inputs

To decode binary data

25 / 156

What is preset in a flip-flop?

A process for signal amplification

A technique for decoding signals

A method for storing binary data

A feature that sets the output to a high state regardless of other inputs

26 / 156

What does toggle mean in the context of flip-flops?

To decode binary data

To store the current state of the flip-flop

To switch the output between its high and low states

To amplify the signal strength

27 / 156

What is a J-K flip-flop?

A type of flip-flop that can toggle, set, or reset based on the inputs J and K

A flip-flop that only stores binary data

A component used for signal amplification

A circuit for binary addition

28 / 156

What does synchronous mean in digital circuits?

Operations are coordinated with a common clock signal

Operations occur independently of any clock signal

The circuit can only process one signal at a time

The circuit is designed for analog signal processing

29 / 156

What does a D flip-flop do?

Compares two binary values

Stores the value of the data input (D) on the clock edge and holds it until the next clock edge

Encodes data into a binary format

Multiples binary numbers

30 / 156

What is an edge-triggered flip-flop?

A flip-flop that changes state on the level of the clock signal

A flip-flop that changes state on a specific transition of the clock signal

A type of signal amplifier

A component used for data storage

31 / 156

What is a clock in digital systems?

A timing signal used to synchronize operations in digital circuits

A device for measuring voltage

A method for encoding data

A type of memory storage

32 / 156

What is process synchronization?

A method for increasing processing speed

A technique used to ensure that multiple processes operate correctly when accessing shared resources

A technique for reducing data storage needs

A process for enhancing signal quality

33 / 156

What is an ALU?

Automatic Loading Unit, used for data storage

Arithmetic Logic Unit, a component that performs mathematical and logical operations

Advanced Logic Unit, for high-speed processing

Array Logic Unit, used for complex computations

34 / 156

What does BIOS stand for?

Basic Interconnect Output System

Basic Input/Output System

Binary Input/Output System

Binary Integrated Operating System

35 / 156

What is caching in computing?

The process of storing frequently accessed data in a high-speed storage area to improve performance

The method of increasing the processing speed of the CPU

The technique of managing data in secondary storage

A process for data encryption

36 / 156

What does main memory refer to in a computer system?

A method of cooling the CPU

A type of peripheral device

A backup storage device for long-term data retention

The primary storage area for data and instructions that the CPU uses

37 / 156

What is a microprocessor?

A specialized input/output device

A high-speed storage device

A type of memory module

A single integrated circuit that contains the core functions of a computer's CPU

38 / 156

What does CPU stand for?

Central Processing Unit

Central Peripheral Unit

Core Processing Unit

Central Power Unit

39 / 156

What do tri-state buffers do?

Allow a signal to be in one of three states: high, low, or high-impedance

Amplify signals for increased transmission range

Convert analog signals to digital signals

Store data in memory cells

40 / 156

What is the RS-232 bus used for?

Serial communication between computers and peripherals

High-speed data storage

Optical signal transmission

Memory management

41 / 156

What does Universal Serial Bus (USB) refer to?

A standard for high-speed data storage

A technique for increasing signal strength

A type of optical communication protocol

A standard for connecting various peripherals to a computer

42 / 156

What is SCSI?

A technique for increasing data throughput

A method of signal modulation

A type of memory storage technology

A standard for connecting and transferring data between computers and peripheral devices

43 / 156

What does GPIB stand for?

General Purpose Integrated Bus

Graphical Peripheral Interface Bus

General Processing Input Bus

General Purpose Interface Bus

44 / 156

What is a handshake in communication protocols?

A type of data compression

A method of error correction

A process of synchronizing data transfer between devices

A technique for increasing signal strength

45 / 156

What is a bus protocol?

A method for increasing signal speed

A set of rules for communication between components over a bus

A technique for reducing data errors

A system for managing power dissipation

46 / 156

What is a bus in computer systems?

A communication system that transfers data between components

A device that performs data encryption

A software program for data analysis

A communication system that transfers data between components

47 / 156

What does PAM stand for in signal modulation?

Pulse Amplitude Modulation

Phase Angle Modulation

Pulse Acceleration Modulation

Pattern Amplitude Modulation

48 / 156

What is modulation in communication systems?

A technique for improving data storage

The process of filtering out noise from signals

The method of amplifying signals

The process of varying a carrier signal to encode data

49 / 156

What does full-duplex communication allow?

Simultaneous two-way communication in both directions

Single-way data transfer only

High-speed data transfer using optical fibers

Reduced data transmission rates

50 / 156

What is half-duplex communication?

One-way communication where data flows in only one direction

Two-way communication where data flows in both directions, but not simultaneously

Communication that uses optical signals

A method for increasing the bandwidth of a signal

51 / 156

What is simplex communication?

One-way communication where data flows in only one direction

Two-way communication where data flows in both directions simultaneously

A method for increasing signal strength

A technique for improving error detection

52 / 156

What does Manchester encoding do?

Encodes data by ensuring transitions in the signal to represent binary values

Converts analog signals to digital signals

Stores data in optical media

Enhances signal power

53 / 156

What is NRZ encoding?

New-Random-Zero, a method for error correction

Non-Return-to-Zero, a type of encoding where the signal does not return to zero

Normal-Return-to-Zero, a data storage method

Non-Reset-Zero, a signal modulation technique

54 / 156

What does RZ stand for in signal encoding?

Reset-Zero, a method for data refresh

Register-Zero, a type of signal synchronization

Return-to-Zero, a type of encoding where the signal returns to zero between bits

Random-Zero, a type of data modulation

55 / 156

What does RZ stand for in signal encoding?

Reset-Zero, a method for data refresh

Register-Zero, a type of signal synchronization

Random-Zero, a type of data modulation

Return-to-Zero, a type of encoding where the signal returns to zero between bits

56 / 156

What is baud in communication systems?

The rate of signal changes per second in a communication channel

The amount of data transmitted per second

The resistance of a communication line

The frequency of a signal

57 / 156

What does bit rate measure in digital communication?

The amount of data transmitted per second

The frequency of a signal

The power consumption of a transmission

The speed of a processor

58 / 156

What does EMI stand for?

Electrical Magnetic Integration

Electromagnetic Interference

Enhanced Magnetic Insulation

Electronic Magnetic Isolation

59 / 156

What is a coaxial cable used for?

Connecting optical fibers

Transmitting electrical signals with minimal interference

Enhancing wireless signal strength

Increasing the speed of data transfer

60 / 156

What is executed in the execute stage of CPU operation?

The storage of results into memory

The decoding of data

The actual computation or action based on the decoded instruction

The fetching of new instructions

61 / 156

What happens during the decode stage in CPU operation?

The CPU waits for external input

The instruction is fetched from memory

The result of an operation is stored in a register

The instruction retrieved is interpreted to determine the operation

62 / 156

What does the fetch stage in CPU operation refer to?

Retrieving an instruction from memory to be executed

Executing an arithmetic operation

Decoding the instruction to determine its type

Writing the result to memory

63 / 156

What is pipelining in a CPU?

A technique where multiple instruction phases are overlapped to improve performance

A method of increasing memory capacity

A technique for reducing power dissipation

A method of decoding instructions

64 / 156

What does MMACS refer to?

Millions of Arithmetic Computation Speed

Mega Multiply Add Computation Speed

Million Multiply Accumulate Operations Per Second

Mega Arithmetic and Calculation Speed

65 / 156

What does MFLOPS stand for?

Million Floating Point Operations Per Second

Mega Floating Point Operations Per Second

Millions of Fast Logic Operations Per Second

Mega Fast Logic Operations Per Second

66 / 156

What is MIPS?

Millions of Instructions Per Second, a measure of CPU performance

Mega Instructions Per Second, a measure of digital signal processing

Memory Interface Processing System, used for memory management

Modular Instruction Processing System, used for data transfer

67 / 156

What does DSP core refer to?

The power supply unit for a DSP

The interface for connecting DSPs to other devices

The memory used in a DSP for data storage

The central processing unit of a DSP that performs mathematical operations

68 / 156

What is a Digital Signal Processor (DSP)?

A type of memory that stores digital signals

A specialized microprocessor designed for high-speed numerical calculations on digital signals

A device that converts analog signals to digital

A component used for amplifying analog signals

69 / 156

What does a Digital-to-Analog Converter (DAC) do?

Amplifies digital signals

Filters analog signals

Converts analog signals into digital signals

Converts digital signals into continuous analog signals

70 / 156

What is memory hierarchy?

The organization of different types of memory in a computer system based on speed and size

The process of converting analog signals into digital form

The method of designing logic gates

The structure of a digital signal processor

71 / 156

What does Blu-ray refer to?

A high-capacity optical disc format for storing high-definition video

A type of high-speed magnetic storage device

A new technology for improving signal processing

A method for increasing power dissipation

72 / 156

What is a hard disk used for?

Amplifying digital signals

Storing data using optical technology

Providing high-speed access to volatile memory

Storing large amounts of data using magnetic storage

73 / 156

What does LIFO stand for in memory management?

Low-Input, Fast-Output

Linear Input, Fixed Output

Last-In, First-Out

Level Input, Fast Output

74 / 156

What is a FIFO memory structure?

Frequency Input, Frequency Output memory structure

Fully Integrated, Fully Operable memory structure

First-In, First-Out memory structure

Fast Input, Fast Output memory structure

75 / 156

What is SRAM?

A type of non-volatile memory used in ROM

Dynamic memory that requires constant refreshing

Static Random-Access Memory that retains data as long as power is supplied

A type of high-speed storage device

76 / 156

What does Flash memory do?

It allows for the electrical erasure and reprogramming of data

It permanently stores data without the ability to modify it

It provides high-speed access to frequently used data

It stores data using magnetic fields

77 / 156

What is EEPROM?

A type of memory that can be electrically erased and reprogrammed

A type of non-volatile memory that cannot be erased

A type of volatile memory with high speed

A type of memory used only for temporary storage

78 / 156

What does EPROM stand for?

Erasable Programmable Read-Only Memory

Electrically Programmable Read-Only Memory

Enhanced Programmable Read-Only Memory

Electrically Erasable Programmable Read-Only Memory

79 / 156

What is an antifuse?

A type of capacitor used in filtering

A programmable logic device that is permanently programmed by blowing a fuse

A type of transistor used in switching circuits

A device that reverses the effects of a fuse

80 / 156

What is a fuse in digital circuits?

A device that protects against overcurrent by breaking the circuit

A component that amplifies signals

A storage element in memory

A type of resistor used for signal conditioning

81 / 156

What is an AND array in digital logic?

A set of AND gates used to implement complex logic functions

A storage element used in memory devices

A method for improving signal integrity

A network of capacitors and resistors

82 / 156

What does an Exclusive-NOR (XNOR) gate do?

Outputs true only when inputs are different

Outputs true only when inputs are the same

Outputs true for all inputs

Outputs false for all inputs

83 / 156

Which gate performs the Exclusive-OR operation?

AND gate

XOR gate

OR gate

NOR gate

84 / 156

What is the function of a NOR gate?

Performs a logical OR followed by a NOT

Performs a logical AND followed by a NOT

Performs a logical XOR

Performs a logical NOT

85 / 156

What type of gate is a NAND gate?

A gate that performs a logical XOR followed by a NOT

A gate that performs a logical OR followed by a NOT

A gate that performs a logical AND followed by a NOT

A gate that performs a logical NOT followed by an AND

86 / 156

Which gate performs the logical or operation?

NOT gate

XOR gate

OR gate

AND gate

87 / 156

What does the complement of a binary number refer to?

The multiplication of binary numbers

The subtraction of a binary number from another

The addition of two binary numbers

The binary number with all bits inverted

88 / 156

What is Boolean algebra used for in digital logic?

Designing mechanical systems

Simplifying and analyzing logical expressions

Measuring electrical resistance

Calculating signal power

89 / 156

Which logic gate performs the logical AND operation?

AND gate

OR gate

NOT gate

XOR gate

90 / 156

What is a truth table used for in digital logic?

To measure the power consumption of a circuit

To represent the possible output states for each input combination

To determine the propagation delay of a circuit

To calculate the fan-out of a digital gate

91 / 156

What is the function of an inverter in digital circuits?

To add two binary numbers

To reverse the logic level of a signal

To store data temporarily

To perform a logical AND operation

92 / 156

What is quantization in the context of ADCs?

Mapping continuous values into discrete levels

Amplifying analog signals

Increasing the resolution of a digital signal

Filtering out noise from digital signals

93 / 156

What does an Analog-to-Digital Converter (ADC) do?

Converts digital signals to analog signals

Filters digital noise from analog signals

Converts continuous analog signals into discrete digital values

Amplifies analog signals

94 / 156

What is aliasing in signal processing?

The process of increasing the bit rate of a signal

The distortion caused by sampling at a rate lower than the Nyquist frequency

The method of converting digital signals to analog

A technique for enhancing signal quality

95 / 156

What is the Nyquist frequency?

The frequency at which an analog signal is sampled

Half the sampling rate of a signal

The maximum frequency of a digital signal

The minimum frequency required to avoid aliasing

96 / 156

What is sampling in the context of digital signal processing?

Converting a digital signal into an analog format

Increasing the frequency of an analog signal

Reducing the bit depth of a digital signal

Measuring an analog signal at regular intervals

97 / 156

What does E²CMOS refer to?

A CMOS variant with embedded EEPROM

A type of high-speed ECL

A low-power logic family

An extended version of TTL

98 / 156

What does ECL stand for in digital logic?

Enhanced CMOS Logic

Emitter-Coupled Logic

Electrically-Coupled Logic

External Control Logic

99 / 156

Which type of output stage requires an external pull-up resistor?

Totem pole

Open-collector

Tri-state

CMOS

100 / 156

What is a totem pole output stage in digital logic?

A configuration where the output can only sink current

A configuration where the output can only source current

A type of output stage that can source or sink current

An output stage with high-impedance state

101 / 156

Which term describes a logic output mode where the output can be high, low, or high-impedance?

Open-collector

Totem pole

Tri-state

Pull-up

102 / 156

What is the purpose of a pull-up resistor?

To provide a defined low level when no active driver is present

To increase power dissipation

To ensure a defined high level when no active driver is present

To reduce the noise margin

103 / 156

What does current sinking refer to in digital circuits?

Drawing current from a load into a digital output

Providing current from a load to an output

Connecting multiple outputs in series

Measuring the power dissipation of a circuit

104 / 156

Which term describes providing current from a digital output to a load?

Current sinking

Current sourcing

Pull-up resistance

Buffering

105 / 156

What is a unit load in the context of digital logic?

The maximum power dissipation of a device

A measure of the load that a digital logic output can drive

The speed at which a circuit operates

The number of instructions a processor can execute per second

106 / 156

What does fan-out refer to in digital logic?

The time delay for a signal to propagate

The number of standard loads that can be driven by a single output

The number of bits in a word D) The ability of a circuit to handle noise

The ability of a circuit to handle noise

107 / 156

What is propagation delay time in digital circuits?

The maximum number of loads that can be driven by an output

The time it takes for a signal to travel from input to output

The resistance of a pull-up resistor

The maximum current a digital output can source

108 / 156

Which term describes the amount of power a digital circuit converts into heat during operation?

Noise margin

Propagation delay time

Power dissipation

Fan-out

109 / 156

What does noise margin measure in a digital circuit?

The rate at which the circuit can process data

The difference between signal levels and noise levels

The maximum power dissipation

The propagation delay time

110 / 156

What is noise immunity in digital circuits?

The ability to operate at high speeds

The capacity to ignore changes in temperature

The ability to resist interference from noise and maintain reliable operation

The capability to minimize power dissipation

111 / 156

Which logic family is known for its low power consumption and high noise immunity?

TTL

ECL

CMOS

BiCMOS

112 / 156

TTL stands for:_____ in digital logic families

Transistor-Transistor Logic

Transistor-Tunnel Logic

Transformer-Transistor Logic

Tunnel-Transistor Logic

113 / 156

What is the range of an 8-bit unsigned binary number?

0 to 127

0 to 255

-128 to 127

-256 to 255

114 / 156

Which logic gate outputs 1 only when both inputs are different?

AND

OR

XOR

NOR

115 / 156

What is the decimal equivalent of the octal number 25?

21

20

18

22

116 / 156

What is the two’s complement representation of -3 in a 4-bit binary system?

1010

1100

1101

1111

117 / 156

What is the result of the binary addition 1010 + 0110

10000

1111

1100

10101

118 / 156

How do you convert the hexadecimal number 1A to binary?

0001 1010

0010 1101

0001 0110

0011 1001

119 / 156

What is the base of the octal number system?

2

10

16

8

120 / 156

Which data structures uses LIFO(Last In, First Out) principle?

Stack

Queue

Linked List

Binary Tree

121 / 156

What is the time complexity of the binary search?

O(n)

O(log n)

O(n^2)

O(1)

122 / 156

Which logic gate is represented by the following Boolean equation: A’ + B’?

NAND

NOR

XOR

AND

123 / 156

What is the role of a pull-down resistor in a digital circuit?

To provide a stable reference voltage

To pull the input voltage down to a low state when the switch is open

To amplify the signal strength

To protect the circuit from overcurrent

124 / 156

Which type of logic gate is formed by combining an AND gate followed by a NOT gate?

NOR

NAND

XOR

XNOR

125 / 156

What is the purpose of using pull-up resistors in digital circuits?

To provide a path for current to flow to ground

To pull the input voltage up to a high state when the switch is open

To limit the current flowing through a component

To provide a stable reference voltage

126 / 156

Which theorem allows simplification of Boolean expressions by complementing both sides and changing AND to OR (and vice versa)?

Demultiplication theorem

De Morgan's theorem

Karnaugh's theorem

Boolean simplification theorem

127 / 156

What is the output of an AND gate if both inputs are high (1)?

High (1)

Low (0)

Depends on the specific gate

Can't say without more information

128 / 156

Which of the following is NOT a basic logic gate?

AND

OR

NOT

XOR

129 / 156

What is the primary function of a logic gate in digital circuits?

To amplify signals

To process analog signals

To perform logical operations

To control motors

130 / 156

What does the delay() function do in an Arduino sketch?

Initializes the Arduino

Sets the pin mode

Sends data to the Serial Monitor

Pauses the program for a specified number of milliseconds

131 / 156

Which function is used to measure the duration of a pulse in microseconds on a digital pin?

millis()

micros()

pulseIn()

delayMicroseconds()

132 / 156

How can you control the brightness of an LED connected to a PWM pin?

By using digitalWrite()

By using analogWrite()

By using digitalRead()

By using analogRead()

133 / 156

What is the purpose of a pull-up resistor in an Arduino circuit?

To limit the current through an LED

To pull the pin voltage up to a high state when not driven by another source

To protect the circuit from overvoltage

To stabilize the output voltage of the Arduino

134 / 156

Which command is used to send data from the Arduino to the Serial Monitor?

Serial.begin()

Serial.print()

Serial.read()

Serial.write()

135 / 156

Which library is commonly used for controlling an LCD display with an Arduino?

Wire.h

Servo.h

LiquidCrystal.h

Stepper.h

136 / 156

Which of the following components would you typically use to display text on an Arduino?

LED

LCD

Resistor

Capacitor

137 / 156

What is the maximum voltage that can be safely applied to an Arduino Uno’s analogue input pin?

3.3V

5V

12V

24V

138 / 156

How do you read an analogue value from a sensor connected to an analogue pin?

digitalWrite(pin)

digitalRead(pin)

pinMode(pin, OUTPUT)

analogRead(pin)

139 / 156

Which of the following commands is used to set a digital pin as an output?

digitalWrite()

digitalRead()

pinMode()

analogRead()

140 / 156

Which pin on the Arduino Uno is typically used for PWM output?

A0

D0

D13

D9

141 / 156

What is the purpose of the loop() function in an Arduino sketch?

To initialize variables and pin modes

To define the main program logic that runs repeatedly

To declare libraries

To handle errors

142 / 156

What is the purpose of the setup() function in an Arduino sketch?

To run the main loop of the code

To initialize variables and pin modes

To declare libraries

To define the main program logic

143 / 156

Which of the following is the main programming language used to write code for Arduino?

Java

Python

C/C++

JavaScript

144 / 156

What is an Arduino?

A type of resistor

A microcontroller development board

A type of sensor

A programming language

145 / 156

During quantisation, what is the rounding process used for?

To reduce the sampling rate

To adjust the amplitude to the nearest quantisation leve

To increase the signal frequency

To decrease the signal bandwidth

146 / 156

What happens to the quantisation error if the bit depth is reduced?

The quantisation error increases

The quantisation error decreases

The quantisation error remains the same

The quantisation error becomes zero

147 / 156

Quantisation is part of which larger process?

Digital to Analogue Conversion

Analogue to Digital Conversion

Frequency Modulation

Amplitude Modulation

148 / 156

Which of the following is NOT a result of increasing the bit depth in quantisation?

More storage space required

Higher resolution

Lower quantisation noise

Increased sampling rate

149 / 156

If an audio signal is quantised using 16 bits, how many quantisation levels are there?

16

256

1024

65536

150 / 156

Why is quantisation considered necessary for digital systems?

Because digital systems cannot process continuous amplitude values

Because it reduces the bandwidth of the signal

Because it increases the amplitude of the signal

Because it converts the signal to a continuous form

151 / 156

How does increasing the number of quantisation levels affect the digital representation of an analogue signal?

It decreases the sampling rate

It increases the quantisation error

It increases the resolution and decreases the quantisation error

It decreases the resolution and increases the quantisation error

152 / 156

What does quantisation error refer to?

The error due to the discrete nature of sampling

The difference between the original analogue value and the quantised digital value

The delay introduced during the conversion process

The noise added by the digital system

153 / 156

What is the primary purpose of quantisation in analogue to digital conversion?

To convert the signal from continuous time to discrete time

To reduce the signal's amplitude

To map the signal's amplitude to a finite set of levels

To increase the signal's frequency

154 / 156

Identify the circuit above:

Shift Register Circuit

Ripple Counter Circuit

Adder Circuit

Decoder Circuit

155 / 156

Does the ripple effect cause potential problems in circuit operation, or is it negligible? Use a timing diagram for an n-bit counter to support your explanation.

It is negligible because the delay is very small.

It causes occasional errors that can be ignored.

It improves the circuit performance.

It causes significant problems due to delayed outputs.

156 / 156

Are ripple counter circuits considered synchronous or asynchronous?

Synchronous

Asynchronous

Both

Neither

Your score is

The average score is 0%

0%

Comments

Leave a Reply Cancel reply