Digital Electronics

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Q. What is the function of a decoder in combinational logic?
  • A. To encode data
  • B. To convert binary to decimal
  • C. To select a specific output line
  • D. To perform addition
Q. What is the function of a decoder in digital logic?
  • A. To convert binary data to decimal
  • B. To select a specific output line based on input
  • C. To perform addition of binary numbers
  • D. To store data temporarily
Q. What is the function of a firewall?
  • A. To speed up internet connection
  • B. To protect against unauthorized access
  • C. To store data securely
  • D. To manage network traffic
Q. What is the function of a multiplexer?
  • A. To amplify signals
  • B. To select one of many inputs and forward it to a single output
  • C. To perform binary addition
  • D. To store data temporarily
Q. What is the function of a NOT gate?
  • A. Inverts the input
  • B. Outputs the same input
  • C. Combines inputs
  • D. None of the above
Q. What is the function of a pull-up resistor in a switch circuit?
  • A. To increase current
  • B. To ensure a defined logic level when the switch is open
  • C. To decrease voltage
  • D. To store charge
Q. What is the function of a testbench in HDL?
  • A. To synthesize the design
  • B. To simulate the design
  • C. To implement the design
  • D. To document the design
Q. What is the function of an operating system?
  • A. To manage hardware and software resources
  • B. To provide internet access
  • C. To run applications only
  • D. To store data permanently
Q. What is the function of registers in a microprocessor?
  • A. To store permanent data
  • B. To hold temporary data and instructions
  • C. To manage power supply
  • D. To connect to external devices
Q. What is the function of the 'TCON' register in the 8051?
  • A. Timer control
  • B. Interrupt control
  • C. Serial communication
  • D. Port control
Q. What is the function of the bus in a microprocessor system?
  • A. To store data
  • B. To connect different components
  • C. To execute instructions
  • D. To manage power supply
Q. What is the function of the PSEN pin in the 8051 microcontroller?
  • A. Program Store Enable
  • B. Power Supply Enable
  • C. Peripheral Select Enable
  • D. Program Select Enable
Q. What is the Gray code equivalent of the binary number 1101?
  • A. 1011
  • B. 1110
  • C. 1000
  • D. 1010
Q. What is the main advantage of BiCMOS logic?
  • A. High speed and low power
  • B. Low cost
  • C. Simplicity
  • D. High noise margin
Q. What is the main advantage of BiCMOS over standard CMOS?
  • A. Higher speed
  • B. Lower cost
  • C. Lower power consumption
  • D. Simpler design
Q. What is the main advantage of ECL over TTL?
  • A. Lower power consumption
  • B. Higher speed
  • C. Higher noise margin
  • D. Lower cost
Q. What is the main advantage of using a D Flip-Flop over an SR Flip-Flop?
  • A. Simplicity
  • B. No invalid states
  • C. Higher speed
  • D. Lower power consumption
Q. What is the main advantage of using a microcontroller with built-in ADC?
  • A. Lower cost
  • B. Higher speed
  • C. Reduced complexity in design
  • D. Increased power consumption
Q. What is the main advantage of using a multiplexer in digital circuits?
  • A. Reduces the number of data lines
  • B. Increases the speed of data processing
  • C. Simplifies circuit design
  • D. All of the above
Q. What is the main advantage of using a parallel-in parallel-out shift register?
  • A. Faster data processing
  • B. Lower power consumption
  • C. Simpler design
  • D. Higher data capacity
Q. What is the main advantage of using a sigma-delta ADC?
  • A. High speed
  • B. Low power consumption
  • C. High resolution
  • D. Low cost
Q. What is the main advantage of using an FIR filter over an IIR filter?
  • A. FIR filters are easier to implement
  • B. FIR filters can have a linear phase response
  • C. FIR filters require less computational power
  • D. FIR filters are always more efficient
Q. What is the main advantage of using CMOS technology in digital circuits?
  • A. High speed
  • B. Low power consumption
  • C. High cost
  • D. Complex design
Q. What is the main advantage of using integrated circuits over discrete components?
  • A. Higher power consumption
  • B. Larger size
  • C. Lower cost and increased reliability
  • D. More complex design
Q. What is the main advantage of using MSI circuits over SSI circuits?
  • A. Lower cost
  • B. Higher speed
  • C. Greater integration density
  • D. Simpler design
Q. What is the main advantage of using MSI circuits?
  • A. Lower power consumption
  • B. Higher speed
  • C. Reduced size and complexity
  • D. Increased cost
Q. What is the main advantage of using SSDs over HDDs?
  • A. Lower cost
  • B. Higher durability
  • C. Larger storage capacity
  • D. Slower access times
Q. What is the main characteristic of combinational logic circuits?
  • A. Output depends on past inputs
  • B. Output depends only on current inputs
  • C. Output is always constant
  • D. Output is random
Q. What is the main difference between CPLD and FPGA?
  • A. CPLDs are more complex than FPGAs
  • B. FPGAs have more logic resources than CPLDs
  • C. CPLDs are used for high-speed applications
  • D. FPGAs are less expensive than CPLDs
Q. What is the main difference between SR and JK Flip-Flops?
  • A. JK Flip-Flop has no invalid state
  • B. SR Flip-Flop has a toggle feature
  • C. JK Flip-Flop is slower
  • D. SR Flip-Flop can only set or reset
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