Microprocessor and Microcontroller MCQs Quiz Multiple Choice Questions & Answers

1. A microprocessor is a......................chip integrating all the functions of a CPU of a computer

1. multiple
2. single
3. double
4. triple

2. Microprocessor is a/an _______ circuit that functions as the CPU of the computer

1. electronic
2. mechanic
3. integrating
4. processing

3. Microprocessor is the ______ of the computer and it perform all the computational tasks

1. main
2. heart
3. important
4. brain

4. The purpose of the microprocessor is to control ______

1. task
2. memory
3. processing
4. switching

5. The first digital electronic computer was built in the year________

1. 1960
2. 1950
3. 1940
4. 1930

6. In 1960, Texas institute invented ______

1. integrated circuits
2. microprocessor
3. vacuum tubes
4. transistors

7. The intel 8086 microprocessor is a _______ processor

1. 8 bit
2. 16 bit
3. 32 bit
4. 64 bit

8. The microprocessor can read/write 16 bit data from or to ________

1. memory
2. I/O device
3. processor
4. register

9. In 8086 microprocessor , the address bus is ________ bit wide

1. 10 bit
2. 12 bit
3. 16 bit
4. 20 bit

10. The work of EU is

1. encoding
2. decoding
3. processing
4. calculation

11. The 16 bit flag of 8086 microprocessor is responsible to indicate ___________

1. the condition of result of ALU operation
2. the condition of memory
3. the result of addition
4. the result of subtraction

12. The CF is known as ________

1. carry flag
2. condition flag
3. common flag
4. single flag

13. The SF is called as ________

1. single flag
2. sign flag
3. service flag
4. super flag

14. The OF is called as _______

1. overflow flag
2. overdue flag
3. operation flag
4. option flag

15. The IF is called as _________

1. initial flag
2. interrupt flag
3. indication flag
4. inner flag

16. The register AX is formed by grouping ________

1. AH & AL
2. BH & BL
3. CH & CL
4. DH & DL

17. The SP is indicated by ________

1. single pointer
2. stack pointer
3. source pointer
4. destination pointer

18. The BP is indicated by ___

1. base pointer
2. binary pointer
3. bit pointer
4. digital pointer

19. The SS is called as _______

1. single stack
2. stack segment
3. sequence stack
4. random stack

20. The index register are used to hold _______

1. memory register
2. offset address
3. segment memory
4. offset memory

21. The BIU contains FIFO register of size __________ bytes

1. 8
2. 6
3. 4
4. 12

22. The BIU prefetches the instruction from memory and store them in ________

1. queue
2. register
3. memory
4. stack

23. The 1 MB byte of memory can be divided into ______ segment

1. 1 Kbyte
2. 32 Kbyte
3. 64 Kbyte
4. 16 Kbyte

24. The DS is called as _______

1. data segment
2. digital segment
3. divide segment
4. decode segment

25. The CS register stores instruction _____________ in code segment

1. stream
2. path
3. codes
4. stream line

26. The IP is ________ bits in length

1. 8 bits
2. 4 bits
3. 16 bits
4. 32 bits

27. The push source copies a word from source to ______

1. stack
2. memory
3. register
4. destination

28. LDs copies to consecutive words from memory to register and ___________

1. ES
2. DS
3. SS
4. CS

29. INC destination increments the content of destination by _______

1. 1
2. 2
3. 30
4. 41

30. IMUL source is a signed _________

1. multiplication
2. addition
3. subtraction
4. division

31. _________destination inverts each bit of destination

1. NOT
2. NOR
3. AND
4. OR

32. The JS is called as ______

1. jump the signed bit
2. jump single bit
3. jump simple bit
4. jump signal it

33. Instruction providing both segment base and offset address are called _____

1. below type
2. far type
3. low type
4. high type

34. The conditional branch instruction specify ___________ for branching

1. conditions
2. instruction
3. address
4. memory

35. The microprocessor determines whether the specified condition exists or not by testing the ______

1. carry flag
2. conditional flag
3. common flag
4. sign flag

36. The LES copies to words from memory to register and __________

1. DS
2. CS
3. ES
4. DS

37. The _________ translates a byte from one code to another code

1. XLAT
2. XCHNG
3. POP
4. PUSH

38. The _______ contains an offset instead of actual address

1. SP
2. IP
3. ES
4. SS

39. The 8086 fetches instruction one after another from __________ of memory

1. code segment
2. IP
3. ES
4. SS

40. The BIU contains FIFO register of size 6 bytes called _____.

1. queue
2. stack
3. segment
4. register

41. The ___________ is required to synchronize the internal operands in the processor CLK Signal

1. UR Signal
2. Vcc
3. AIE
4. Ground

42. The pin of minimum mode AD0-AD15 has ____________ address

1. 16 bit
2. 20 bit
3. 32 bit
4. 4 bit

43. The pin of minimum mode AD0- AD15 has _________ data bus

1. 4 bit
2. 20 bit
3. 16 bit
4. 32 bit

44. The address bits are sent out on lines through __________

1. A16-19
2. A0-17
3. D0-D17
4. C0-C17

45. ________ is used to write into memory

1. RD
2. WR
3. RD / WR
4. CLK

46. The functions of Pins from 24 to 31 depend on the mode in which _______ is operating

1. 8085
2. 8086
3. 80835
4. 80845

47. The RD, WR, M/IO is the heart of control for a __________ mode

1. minimum
2. maximum
3. compatibility mode
4. control mode

48. In a minimum mode there is a ___________ on the system bus

1. single
2. double
3. multiple
4. triple

49. If MN/MX is low the 8086 operates in __________ mode

1. Minimum
2. Maximum
3. both (A) and (B)
4. medium

50. In max mode, control bus signal So,S1 and S2 are sent out in ____________ form

1. decoded
2. encoded
3. shared
4. unshared