Digital Electronics

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Q. What is the typical range of gates in an MSI circuit?
  • A. 1-10 gates
  • B. 10-100 gates
  • C. 100-1000 gates
  • D. 1000+ gates
Q. What is the typical supply voltage for standard TTL logic circuits?
  • A. 3.3V
  • B. 5V
  • C. 12V
  • D. 15V
Q. What is the typical supply voltage range for a standard 555 timer?
  • A. 1.5V to 5V
  • B. 4.5V to 15V
  • C. 5V to 20V
  • D. 10V to 30V
Q. What is the typical voltage level for a logic high in TTL logic?
  • A. 0V
  • B. 2.5V
  • C. 5V
  • D. 12V
Q. What is the value of the hexadecimal number 2A in decimal?
  • A. 42
  • B. 26
  • C. 32
  • D. 50
Q. What is the value of the hexadecimal number 2F in decimal?
  • A. 47
  • B. 31
  • C. 42
  • D. 50
Q. What is the Z-transform used for in digital signal processing?
  • A. To analyze continuous-time signals
  • B. To convert time-domain signals into frequency-domain
  • C. To analyze discrete-time signals
  • D. To filter noise from signals
Q. What programming language is commonly used to design logic for PLDs?
  • A. C
  • B. VHDL
  • C. Python
  • D. Java
Q. What programming language is commonly used to design PLD configurations?
  • A. C++
  • B. VHDL
  • C. Python
  • D. Java
Q. What type of code converter is used to convert binary numbers to Gray code?
  • A. Binary to BCD converter
  • B. Binary to Gray code converter
  • C. BCD to binary converter
  • D. Decimal to binary converter
Q. What type of code does a binary to Gray code converter produce?
  • A. A code that minimizes errors in digital communication
  • B. A code that is easier to read
  • C. A code that represents numbers in a different base
  • D. A code that is used for error detection
Q. What type of counter is a Johnson counter?
  • A. Synchronous counter
  • B. Asynchronous counter
  • C. Ring counter
  • D. Decade counter
Q. What type of counter is used to count both up and down?
  • A. Up counter
  • B. Down counter
  • C. Up/Down counter
  • D. Ring counter
Q. What type of multivibrator is used to generate a square wave output?
  • A. Astable multivibrator
  • B. Monostable multivibrator
  • C. Bistable multivibrator
  • D. None of the above
Q. What type of sensor would typically output a voltage proportional to the temperature?
  • A. Photodiode
  • B. Thermocouple
  • C. Resistor
  • D. Inductor
Q. What type of sensor would you use to measure temperature?
  • A. Photodiode
  • B. Thermistor
  • C. Accelerometer
  • D. Microphone
Q. What type of shift register allows data to be shifted in both directions?
  • A. Serial-in Serial-out
  • B. Parallel-in Parallel-out
  • C. Bidirectional Shift Register
  • D. Universal Shift Register
Q. What type of shift register shifts data to the left?
  • A. Right shift register
  • B. Left shift register
  • C. Bidirectional shift register
  • D. Universal shift register
Q. What type of signal is typically used in digital circuits?
  • A. Analog signal
  • B. Digital signal
  • C. Continuous signal
  • D. Variable signal
Q. Which bus is used to transfer data between the CPU and memory?
  • A. Address bus
  • B. Data bus
  • C. Control bus
  • D. Power bus
Q. Which circuit is used to perform multiplication of binary numbers?
  • A. Adder
  • B. Multiplier
  • C. Decoder
  • D. Encoder
Q. Which circuit is used to perform subtraction in digital systems?
  • A. Adder
  • B. Subtractor
  • C. Multiplier
  • D. Divider
Q. Which component is commonly used to interface sensors with microcontrollers?
  • A. Resistor
  • B. Capacitor
  • C. Operational Amplifier
  • D. Transistor
Q. Which component is essential for setting the timing interval in a 555 timer?
  • A. Inductor
  • B. Resistor
  • C. Diode
  • D. Transistor
Q. Which component is responsible for temporary data storage in a microprocessor?
  • A. ROM
  • B. RAM
  • C. Cache
  • D. Registers
Q. Which component is used to perform arithmetic operations in digital circuits?
  • A. ALU
  • B. MUX
  • C. Flip-flop
  • D. Register
Q. Which component is used to set the timing interval in a 555 timer circuit?
  • A. Resistor
  • B. Capacitor
  • C. Inductor
  • D. Diode
Q. Which configuration of the 555 timer is used for pulse width modulation (PWM)?
  • A. Astable mode
  • B. Monostable mode
  • C. Bistable mode
  • D. None of the above
Q. Which device is used to connect multiple computers in a network?
  • A. Router
  • B. Switch
  • C. Modem
  • D. Firewall
Q. Which file system is commonly used for USB flash drives?
  • A. NTFS
  • B. FAT32
  • C. ext4
  • D. HFS+
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