Friday, January 29, 2021

MicroProcessor MCQ For HPSSC JOA IT Exam

MicroProcessor MCQ For HPSSC JOA IT Exam

 

MicroProcessor MCQ For HPSSC JOA IT Exam



MicroProcessor MCQ For HPSSC JOA IT Exam


1. FPGA means

a) Field Programmable Gate Array

b) Forward Programmable Gate Array

c) Forward Parallel Gate Array

d) Field Parallel Gate Array


2. Which language could be used for programming an FPGA.

a) Verilog

b) VHDL

c) Both A and B

d) None Of Thes


3. What is mean by ALU

a) Arithmetic logic upgrade

 b) Arithmetic logic unsigned

c) Arithmetic Local unsigned

 d) Arithmetic logic unit


4. In 8085 microprocessor, the RST6 instruction transfer programme execution to following location

a) 0030H 

b) 0024H 

c) 0048H 

d) 0060H


5. HLT opcode means

a) load data to accumulator

b) store result in memory

c) load accumulator with contents of register

d) end of program



6. What is SIM?

a) Select interrupt mask 

b) Sorting interrupt mask

c) Set interrupt mask

 d) None of these


7. A field programmable ROM is called

a) MROM

 b) PROM

 c) FROM

 d) FPROM


8. The length of bus cycle in 8086/8088 is four clock cycle, T1, T2, T3, T4 and an indeterminate number of wait clock cycles denoted by Tw. The wait states are always inserted between

a) T1 & T2 

b) T2 & T3 

c) T3 & T4

 d) T4 & T5


9. Which one of the following circuits transmits two messages simultaneously in one direction

a) Duplex

 b) Diplex 

c) Simplex 

d) Quadruplex


10. The program counter in a 8085 micro-processor is a 16 bit register, because

a) It counts 16 bits at a time

b) There are 16 address lines

c) It facilitates the user storing 16 bit data temporarily

d) It has to fetch two 8 bit data at a time


11. A microprocessor is ALU __________

a) and control unit on a single chip

 b) and memory on a single chip

c) register unit and I/O device on a single chip 

d) register unit and control unit on a single chip


12. In intel 8085A microprocessor ALE singnal is made high to

a) Enable the data bus to be used as low order address bus

b) To latch data D0-D7 from data bus

c) To disable data bus

d) To achieve all the function listed above


13. Which of the following statements for intel 8085 is correct?

a) Program counter (PC) specifies the address of the instruction last executed

b) PC specifies the address of the instruction being executed

c) PC specifies the address of the instruction to be executed

d) PC specifies the number of instructions executed so far


14. A good assembly language programmer should use general purpose registers rather than memory in maximum possible ways for data processing. This is because:

a) Data processing with registers is easier than with memory

b) Data processing with memory requires more instructions in the program than that with registers

c) Of limited set of instructions for data processing with memory

d) Data processing with registers takes fewer cycles than that with memory


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15. Which one of the following is not correct?

a) Bus is a group of wires

b) Bootstrap is a technique or device for loading first instruction

c) An instruction is a set of bits that defines a computer operation

d) An interrupt signal is required at the start of every program


16. The processor status word of 8085 microprocessor has five flags namely:

a) S, Z, AC, P, CY

b) S, OV, AC, P, CY

c) S, Z, OV, P, CY

d) S, Z, AC, P, OV


17. What are the sets of commands in a program which are not translated into machine instructions during assembly process, called?

a) Mnemonics

 b) Directives

 c) Identifiers 

d) Operands


18. In an intel 8085A, which is the first machine cycle of an instruction?

a) An op-code fetch cycle

b) A memory read cycle

c) A memory write cycle

d) An I/O read cycle


19. Both the ALU and control section of CPU employ which special purpose storage location?

a) Buffers

b) Decoders

c) Accumulators

d) Registers


20. In an intel 8085A microprocessor, why is READY signal used?

a) To indicate to user that the microprocessor is working and is ready for use.

b) To provide proper WAIT states when the microprocessor is communicating with a slow peripheral device

c) To slow down a fast peripheral device so as to communicate at the microprocessor‘s device.

d) None Of These


21. The register which holds the information about the nature of results of arithmetic and logic operations is called as

a) Accumulator

b) Condition code register

c) Flag register

d) process status register


22. A bus connected between the CPU and main memory that permits transfer of information between main memory and the CPU is known as

a) DMA bus

 b) Memory bus

 c) Address bus

 d) control bus


23. How many segments are there in 8086?

a) 6

b) 4

c) 3

d) 2


24. The first microprocessor to include virtual memory in the intel microprocessor family is

a) 80286

b) 80386

c) 80486

d) Pentium


25. Total number of instructions in 8086 microprocessor assembly language is

a) 244

b) 254

c) 246

d) 247


26. In microprocessor based system I/O ports are used to interface

a) the I/O devices and memory chips

b) the I/P device only

c) the O/P devices only

d) all the I/O devices


27. The instruction set of a microprocessor

a) is specified by the manufacturers

b) is specified by the user

c) cannot be changed by the user

d) is stored inside the microprocessor


28. The stack pointer

a) resides in RAM

b) resides in ROM

c) resides in microprocessor

d) may be in RAM or ROM


29. Accumulator based microprocessor example are:

a) Intel 8085

b) Motorola 6809

c) A and B

d) None of these


30. How many buses are connected as part of the 8085A microprocessor?

a) 2 

b) 3 

c) 5 

d) 8


31. The microprocessor can read/write 16 bit data from or to ____

a) Memory

 b) I/O device

c) Processor

 d) Processor


32. In 8086 microprocessor, the address bus is ____ bit wide

a) 10 bit

 b) 12 bit

c) 16 bit

 d) 20 bit


33. The work of EU is ______

a) Encoding

b) Decoding

c) Processing

d) Calculation


34. The SF is called as ______

a) Single flag

b) sign flag

c) service flag

d) super flag



35. The OF is called as ______

a) Over flow flag

b) overdue flag

c) operation flag

d) option flag


36. The IF is called as ______

a) Initial flag

b) interrupt flag

c) indication flag

d) inner flag


37. The BP is indicated by ____

a) Base pointer

b) binary pointer

c) bit pointer

d) digital pointer


38. The SS is called as _____

a) Single stack

b) Stack segment

c) Sequence stack

d) random stack


39. The index register are used to hold ______

a) Memory register

 b) Offset address

c) segment memory

 d) offset memory


40. The DS is called as _____

a) Data segment 

b) digital segment

c) divide segment

 d) decode segment


41. The CS register stores instructions _______ in code segment

a) Stream

b) Path

c) Codes

d) Stream Line


42. The push source copes a word from source to _____

a) Stack

b) Memory

c) Register

d) Destination


43. IMUL source is a signed _____

a) Multiplication

b) Addition

c) Substraction

d) Division


44. The JS is called as ____

a) jump the signed bit

b) jump single bit

c) jump simple bit

d) jump signal it


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

a) Below type

b) far type

c) low type

d) high type


46. The microprocessor determines whether the specified condition exists of not by testing the ___

a) Carry flag

b) conditional flag

c) common flag

d) sign flag


47. The pin of minimum mode AD0-AD15 has ______ address

a) 16 bit 

b) 20 bit

c) 32 bit 

d) 4 bit


48. The pin of minimum mode AD0-AD15 has _____ data bus.

a) 4 bit 

b) 20 bit

c) 16 bit 

d) 32 bit


49. The address bits are sent out on lines through

a) A16-19

b) A0-17

c) D0-D17

d) C0-C17


50. _____ is used to write into memory

a) RD

b) WR

c) RD/WR

d) CLK


51. In a minimum mode there is a _____ of the system bus

a) single

b) double

c) Multiple

d) Triple


52. In max mode, control bus signal S0, S1 and S2 are sent out in ____ form

a) Decoded

b) encoded

c) shared

d) unshared


53. The ___ bus controller device decodes the signals to produce the control bus signal

a) Internal

b) Data

c) External

d) Address


54. Primary function of memory interfacing is that the ______ should be able to read from and write into register

a) Multiprocessor

b) Microprocessor

c) dual processor

d) coprocessor


55. Memory is an integral part of a _____ system

a) Supercomputer 

b) Microcomputer

c) mini computer 

d) mainframe computer


56. _____ has certain signal requirements write into and read from its registers

a) Memory

 b) Register

c) Both A and B

 d) control


57. An ____ is used to fetch one address

a) Internal decoder

b) External Decoder

c) Encoder

d) Register


58. The ____ pin is used to select direct command word

a) A0

b) D7-D6

c) A12

d) AD7-AD6


59. The ____ is used to connect more microprocessor

a) Peripheral device

b) Cascade

c) I/O device

d) control unit


60. ALE stands for ______

a) Address latch enable

b) address level enable

c) address leak enable

d) address leak heetson


61. Address line for TRAP is?

a) 0023H

b) 0024H

c) 0033H

d) 0099H


62. Which bus is bidirectional?

a) Address bus

b) Control bus

c) Data bus

d) None of these


63. Which microprocessor has multiplexed data and address lines?

a) 8086

 b) 80286

c) 80386

 d) Pentium


64. A 20-bit address bus can locate _______

a) 1,048,576 locations 

b) 2,097,152 locations

c) 4,194,304 locations 

d) 8,388,608 locations


65. A 20-bit address bus allows access to a memory of capacity

a) 1 MB

b) 2 MB

c) 4 MB

d) 8 MB


66. An 8 bit microprocessor signifies that

a) 8-bit address bus

b) 8-bit controller

c) 8-interuppt lines

d) 8-bit data bus


67. LIFO stands for ______

a) last input first output

b) least in least out

c) last inside first outside

d) last income first outcome


68. 8085 microprocessor has how many pins

a) 30

b) 39

c) 40

d) 41


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

a) multiple

b) single

c) double

d) triple


70. The first Microprocessor was ______

a) Intel 4004

b) 8080

c) 8085

d) 4008

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