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