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160+ 8085 Microprocessor Solved MCQs

These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Bachelor of Science in Computer Science FY (BSc CS) , Bachelor of Science in Information Technology FY (BSc IT) , Bachelor of Computer Applications (BCA) , Bachelor of Science in Information Technology (BSc IT) , Bachelor of Science in Computer Science (BSc CS) .

1.

Which is the microprocessor comprises:

A. register section
B. one or more alu
C. control unit
D. all of these
Answer» D. all of these
2.

What is the store by register?

A. data
B. operands
C. memory
D. none of these
Answer» A. data
3.

Accumulator based microprocessor example are:

A. intel 8085
B. motorola 6809
C. a and b
D. none of these
Answer» C. a and b
4.

A set of register which contain are:

A. data
B. memory addresses
C. result
D. all of these
Answer» D. all of these
5.

There are primarily two types of register:

A. general purpose register
B. dedicated register
C. a and b
D. none of these
Answer» C. a and b
6.

Name of typical dedicated register is:

A. pc
B. ir
C. sp
D. all of these
Answer» D. all of these
7.

Which is used to store critical pieces of data during subroutines and interrupts:

A. stack
B. queue
C. accumulator
D. data register
Answer» A. stack
8.

The data in the stack is called:

A. pushing data
B. pushed
C. pulling
D. none of these
Answer» A. pushing data
9.

The external system bus architecture is created using from ______ architecture:

A. pascal
B. dennis ritchie
C. charles babbage
D. von neumann
Answer» D. von neumann
10.

The processor 80386/80486 and the Pentium processor uses _____ bits address bus:

A. 16
B. 32
C. 36
D. 64
Answer» B. 32
11.

Which is not the control bus signal:

A. read
B. write
C. reset
D. none of these
Answer» C. reset
12.

EPROM stands for:

A. erasable programmable read-only memory
B. ectrically programmable read write memory
C. electrically programmable read-only memory
D. none of these
Answer» A. erasable programmable read-only memory
13.

Each memory location has:

A. address
B. contents
C. both a and b
D. none of these
Answer» C. both a and b
14.

Which is the type of microcomputer memory:

A. processor memory
B. primary memory
C. secondary memory
D. all of these
Answer» D. all of these
15.

Secondary memory can store____:

A. program store code
B. compiler
C. operating system
D. all of these
Answer» D. all of these
16.

Secondary memory is also called____:

A. auxiliary
B. backup store
C. both a and b
D. none of these
Answer» C. both a and b
17.

The RAM which is created using bipolar transistors is called:

A. dynamic ram
B. static ram
C. permanent ram
D. ddr ram
Answer» B. static ram
18.

Which type of RAM needs regular referred:

A. dynamic ram
B. static ram
C. permanent ram
D. sd ram
Answer» A. dynamic ram
19.

Which RAM is created using MOS transistors:

A. dynamic ram
B. static ram
C. permanent ram
D. sd ram
Answer» A. dynamic ram
20.

The CPU sends out a ____ signal to indicate that valid data is available on the data bus:

A. read
B. write
C. both a and b
D. none of these
Answer» B. write
21.

The CPU removes the ___ signal to complete the memory write operation:

A. read
B. write
C. both a and b
D. none of these
Answer» A. read
22.

BIU STAND FOR:

A. bus interface unit
B. bess interface unit
C. a and b
D. none of these
Answer» A. bus interface unit
23.

EU STAND FOR:

A. execution unit
B. execute unit
C. exchange unit
D. none of these
Answer» A. execution unit
24.

Eight of the register are known as:

A. general- purpose register
B. pointer or index registers
C. segment registers
D. other register
Answer» A. general- purpose register
25.

IP Stand for:

A. instruction pointer
B. instruction purpose
C. instruction paints
D. none of these
Answer» A. instruction pointer
26.

CS Stand for:

A. code segment
B. coot segment
C. cost segment
D. counter segment
Answer» A. code segment
27.

DS Stand for:

A. data segment
B. direct segment
C. declare segment
D. divide segment
Answer» A. data segment
28.

The acculatator is 16 bit wide and is called:

A. ax
B. ah
C. al
D. dl
Answer» A. ax
29.

How many bits the instruction pointer is wide:

A. 16 bit
B. 32 bit
C. 64 bit
D. 128 bit
Answer» A. 16 bit
30.

How many type of addressing in memory:

A. logical address
B. physical address
C. both a and b
D. none of these
Answer» C. both a and b
31.

The size of each segment in 8086 is:

A. 64 kb
B. 24 kb
C. 50 kb
D. 16kb
Answer» A. 64 kb
32.

The pin configuration of 8086 is available in the________:

A. 40 pin
B. 50 pin
C. 30 pin
D. 20 pin
Answer» A. 40 pin
33.

DIP stand for:

A. deal inline package
B. dual inline package
C. direct inline package
D. digital inline package
Answer» B. dual inline package
34.

EA stand for:

A. effective address
B. electrical address
C. effect address
D. none of these
Answer» A. effective address
35.

BP stand for:

A. bit pointer
B. base pointer
C. bus pointer
D. byte pointer
Answer» B. base pointer
36.

DI stand for:

A. destination index
B. defect index
C. definition index
D. delete index
Answer» A. destination index
37.

SI stand for:

A. stand index
B. source index
C. segment index
D. simple index
Answer» B. source index
38.

ALE stand for:

A. address latch enable
B. address light enable
C. address lower enable
D. address last enable
Answer» A. address latch enable
39.

NMI stand for:

A. non mask able interrupt
B. non mistake interrupt
C. both
D. none of these
Answer» A. non mask able interrupt
40.

The offset of a particular segment varies from _________:

A. 000h to fffh
B. 0000h to ffffh
C. 00h to ffh
D. 00000h to fffffh
Answer» B. 0000h to ffffh
41.

Which are the factor of cache memory:

A. architecture of the microprocessor
B. properties of the programs being executed
C. size organization of the cache
D. all of these
Answer» D. all of these
42.

________ is usually the first level of memory access by the microprocessor:

A. cache memory
B. data memory
C. main memory
D. all of these
Answer» A. cache memory
43.

Microprocessor reference that are not available in the cache are called_________:

A. cache hits
B. cache line
C. cache misses
D. cache memory
Answer» C. cache misses
44.

Which causes the microprocessor to immediately terminate its present activity:

A. reset signal
B. interupt signal
C. both
D. none of these
Answer» A. reset signal
45.

Which is responsible for all the outside world communication by the microprocessor:

A. biu
B. piu
C. tiu
D. liu
Answer» A. biu
46.

INTR: it implies the__________ signal:

A. intrrupt request
B. intrrupt right
C. intrrupt rongh
D. intrrupt reset
Answer» A. intrrupt request
47.

Which of the following are the two main components of the CPU?

A. control unit and registers
B. registers and main memory
C. control unit and alu
D. alu and bus
Answer» C. control unit and alu
48.

The language that the computer can understand and execute is called

A. machine language
B. application software
C. system program
D. all of the above
Answer» A. machine language
49.

Which of the following is used as a primary storage device?

A. magnetic drum
B. prom
C. floppy disk
D. all of these
Answer» B. prom
50.

The memory which is programmed at the time it is manufactured

A. prom
B. ram
C. prom
D. eprom
Answer» A. prom

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