Quiz  /  Microcontroller Gate & PSU MCQ Questions With Answers

  • 1. 
    ยง To read the data present at the pins, we should read the

  • PORT register
  • Control register
  • PIN register.
  • DDR register

  • 2. 
    He number of bits the processor can process at a time is called the _____________ of the processor.

  • Byte
  • Sentence Length
  • Word Length
  • Bits

  • 3. 
    Serializing data is a way of sending a byte of data one bit at a time through a single pin of microcontroller.

  • True
  • False

  • 4. 
    What is an arithmetic of 'B' register?

  • Addition & Subtraction
  • Addition & Multiplication
  • Multiplication & Subtraction
  • Multiplication & Division

  • 5. 
    What is an another name of RAM?

  • Program memory
  • Data memory
  • Coded memory
  • Combination memory

  • 6. 
    What is an another name of DPTR?

  • Stack pointer
  • Data pointer
  • Memory pointer
  • Program pointer

  • 7. 
    The microprocessor can supports multiple data type formats like

  • binary
  • ASCII
  • signed unsigned numbers
  • All the above

  • 8. 
    8051 microcontrollers are manufactured by which of the following companies?

  • Atmel
  • Philips
  • Intel
  • All of the mentioned

  • 9. 
    Program Counter in 8051 is

  • 8 bit wide
  • 16 bit wide
  • 20 bit wide

  • 10. 
    Microprocessor incorporates the function of a __________________ in a single integrated circuit.

  • Memory
  • CPU
  • Monitor
  • Keyboard

  • 11. 
    When we add two numbers the destination address must always be.

  • some immediate data
  • any register
  • accumulator
  • memory

  • 12. 
    To work the DDRx register an output port set DDRx register 1.

  • True
  • False

  • 13. 
    How many bytes of bit addressable memory is present in 8051 based microcontrollers?

  • 8 bytes
  • 32 bytes
  • 16 bytes
  • 128 bytes

  • 14. 
    How many timers are present in 8051

  • 2
  • 4
  • 1

  • 15. 
    Which port is used only for INPUT/OUTPUT operation?

  • PORT 0
  • PORT 1
  • PORT 2
  • PORT 3

  • 16. 
    When 8051 wakes up then 0x00 is loaded to which register?

  • PSW
  • SP
  • PC
  • None of the mentioned

  • 17. 
    On power up, the 8051 uses which RAM locations for register R0- R7

  • 00-2F
  • 00-07
  • 00-7F
  • 00-0F

  • 18. 
    8051 series has how many 16 bit registers

  • 2
  • 3
  • 1
  • 0

  • 19. 
    Consider the following program. Assume that internal memory 30h contains 5h.org 0hmov r2,#30hmov a,@r2add a,r2endChoose the right answer

  • Syntax Error
  • Accumulator will contain 35h
  • Not able to access internal memory
  • None

  • 20. 
    To select Register Bank 1, RS1-RS0 Should be

  • 0 0
  • 0 1
  • 1 0
  • 1 1

  • 21. 
    A microprocessor consists of the following

  • ALU, CU, Memory
  • ALU, Memory, I/O Ports
  • Memory, Register, CU
  • ALU, CU, Registers

  • 22. 
    Identify the port by its architecture.

  • P1
  • P0
  • P3
  • P2

  • 23. 
    The first microprocessor so invented was of __________ bit.

  • 2
  • 16
  • 4
  • 8

  • 24. 
    The first microprocessor was invented on ___________ by __________.

  • 1971, Intel
  • 1972, Intel
  • 1991, Zilog
  • 1992, Intel
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