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