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Contributed by: Madarcos
  • 1. When an interrupt occurs, the microcontroller FIRST:
A) Save the current program state
B) Resets the cpu
C) Clears RAM
D) Executes the next instruction
  • 2. Which component is primary responsible for instruction decoding?
A) Control Unit
B) Program counter
C) Register file
D) ALU
  • 3. Which of the following best explains why register access is faster than RAM access?
A) Registers are located inside the cpu
B) Registers operate at lower clock speed
C) Registers are external to the cpu
D) Registers are larger in size
  • 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) Larger memory capacity
B) Ability to run operating system
C) Higher clock speed
D) Lower cost and integrated peripheral
  • 6. Which statement about interrupts is TRUE?
A) Interrupts stop the clock permanently
B) Interrupts allow immediate response to events
C) Interrupts eliminate the need for a main program
D) Interrupts replace polling intirely
  • 7. Which features most clearly distinguishes a microcontroller from microprocessor?
A) Presence of an ALU
B) Ability to execute instructions
C) Use of clock signals
D) Integration of memory and peripherals on-chip
  • 8. What is microcontroller?
A) A microprocessor used on for computers.
B) A high-speed graphics processor
C) A type of analog controller
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) Is volatile
C) Can be electrically erased and programmed
D) Requires no power to write data
  • 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) Interrupts system
B) Direct memory access
C) Harvard architecture
D) Pipelining
  • 12. Which peripheral allows microcontroller to convert an analog sensor signal into digital data?
A) DAC
B) PWM
C) Comparator
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) 1980's
B) 1970's
C) 1960'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 ARM-based device
D) The first 32-bit processor
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