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Contributed by: Madarcos
  • 1. When an interrupt occurs, the microcontroller FIRST:
A) Save the current program state
B) Clears RAM
C) Executes the next instruction
D) Resets the cpu
  • 2. Which component is primary responsible for instruction decoding?
A) Register file
B) Control Unit
C) ALU
D) Program counter
  • 3. Which of the following best explains why register access is faster than RAM access?
A) Registers are located inside the cpu
B) Registers are external to the cpu
C) Registers are larger in size
D) Registers operate at lower clock speed
  • 4. Microcontrollers are commonly used in appliances, vehicles and industrial systems.
A) TRUE
B) FALSE
  • 5. Why are microcontrollers preferred embedded systems or microprocessors?
A) Ability to run operating system
B) Lower cost and integrated peripheral
C) Higher clock speed
D) Larger memory capacity
  • 6. Which statement about interrupts is TRUE?
A) Interrupts stop the clock permanently
B) Interrupts replace polling intirely
C) Interrupts eliminate the need for a main program
D) Interrupts allow immediate response to events
  • 7. Which features most clearly distinguishes a microcontroller from microprocessor?
A) Use of clock signals
B) Integration of memory and peripherals on-chip
C) Presence of an ALU
D) Ability to execute instructions
  • 8. What is microcontroller?
A) A programmable device with cpu, memory and I/O on a single chip
B) A high-speed graphics processor
C) A microprocessor used on for computers.
D) A type of analog controller
  • 9. The main advantage of using flash memory in microcontroller is that it;
A) Is volatile
B) Can be electrically erased and programmed
C) Requires no power to write data
D) Has fastest access time than registers
  • 10. Early microcontrollers had large memory capacities similar to modern devices
A) FALSE
B) TRUE
  • 11. Which architectural features allow a microcontroller to execute one instruction while fetching the next?
A) Interrupts system
B) Pipelining
C) Harvard architecture
D) Direct memory access
  • 12. Which peripheral allows microcontroller to convert an analog sensor signal into digital data?
A) Comparator
B) PWM
C) DAC
D) ADC
  • 13. Which company introduced the first commercially successful microcontroller?
A) Texas Instruments
B) IBM
C) Intel
D) Motorola
  • 14. In which decade microcontroller first introduced?
A) 1970's
B) 1990's
C) 1980's
D) 1960's
  • 15. The Intel 8048, released in 1970's, is significant because it was:
A) One of the earliest microcontrollers
B) The first microprocessor used in PC's
C) The first ARM-based device
D) The first 32-bit processor
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