MC0016(A)

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PC TRAINING INSTITUTE LIMITED

MC0016MICROPROCESSOR APPLICATION

[1 mark each]

1) A microprocessor is the heart of the microcomputer.a) Receiving inputb) Performing computations.

c) Storing data & instructions

d) All of the above.

2) A device, which enables a microcomputer to perform the first of the above

mentioNed 0ark1 `s known as the input device.a) Keyboard

b) Mouse

c) Toggle


3) The task of displaying the result computed by the microprocessor is performed by an

output device, some of the commonly used output device.

a) Cathode Ray Tube(CRT)

b) Light-Emitting diodes(LEDS)c) Laser printer


4) n instruction essentially consists of an

a) Operation codeb) Address of the data

c) Instruction operatesd) None of the above.

5) The 8085A has interrupt pins :-a) TRAP, RST7.5

b) RST6.5, RST5.5

c) TNTR(pin 10)


6) 8085A has 8 unidirectional signal lines :-a) MSBb) HOLD,HALT

c) RESET mode

d) None of the above.

7) Every microprocessor is provided with a set of registers :

a) Temporary storage

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b) Instruction Execution

c) All of these


8) Registers available for temporary storage of operands or address affects the following

:- a) Memory space occupied by the program.

b) Time of execution of the program.

c) Ease of programming.


9) The registers available to t he user can be further classified into :-

a) General purpose registerb) Special purpose register

c) None of these


10) In 8085A microprocessor, the data size is 8-bit and address size is 16-bit.

a) B-C pair b) D-E pair

c) H-L pair


11) Set of registers provided for some special applications.

a) Accumulator

b) Memory spacec) All of the above


12) A microprocessor to execute a program, the CPU has to do the following operations:

a) Fetch the opcode

b) Read a memory location for the data.c) Perform the required operation


13) An instruction cycle can be defined as the sum of an instruction fetch time and theinstruction execute time.

a) Instruction cycle=Instruction fetch + Instruction execute.

b) Memory location and deposited in the CPUsc) Both of these


14) 8085 has 5 addressing mode and are :-

a) Immediate, inherent

b) Direct

c) Register and register indirect

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15) The microprocessor selects the peripheral through

Transmit

Rec Receive

IOW

IOR

a) Read select

b) Write select

c) Chip select


16) One of the following addressing modes is not possible in 8085.a) Indexed addressingb) Indirect addressing

c) Direct addressing

d) Indirect register address.

17) 8085 has

a) One 16-bit register

b) Two 16-bit register

c) Three 16-bit register

d) Four 16-bit register.18) The speed of a microprocessor is usually measured by the

a) Microprocessors throughput.

b) Speed with which it performs I/P and O/P operations.

c) Time required to execute a basic instruction.

d) Time required to process a small operation.

19) Interrupts can be generally classified :a) Hardware interrupts

b) Software interrupts

c) Both of above


20) 8085 microprocessor has 5 hardware interrupts :

a) TRAP, RST6.5

b) RST7.5,RST5.5

c) INTR


3

8085 Serial

Peripheral

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21) The data which a microprocessor needs to process, comes from devices such as a

keyboard.

a) Switchb) Analog-to-digital

c) Digital-to-analog


22) The 8085 can respond to four externally initiated operation.

a) Reset, Interrupt b) Ready hold c) Memory-mapped I/O d) Memory chip

a) c, d, both

b) a, b, both

c) None of the above.d) All of the above

23) To interconnect peripherals with the 8085 MPU, additional logic circuit, called

interfacing devices. These circuits includes device such asa) buffer

b) Decoderc) Encoder, latches


24) The 8085 flag register has five flag.

1) Carry flag, Sign flag 2) Zero flag, Parity flag 3) Auxilliary Carry

a) 1, 2 both

b) 1, 3 both

c) 2, 3 both


25) Counters and time delays can be designed using .

a) Softwareb) CPI

c) Instruction


26) The 8085 code can be assembled by using a program called a :

a) Cross-assembler

b) Cross-compilerc) Cross-interpret


27) The 8085 microprocessor has two pins available for I/O communication.

(1) HOLD, HOLDA (2) HOLDAB, HOLDB

a) 1, 2 both


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b) 1 onlyc) 2 only.

d) All of these28) The ______ is a program that allows then user to test and debug the object file.

a) Assembler

b) Loaderc) Debuggerd) None of the above.

29) It is a program that takes the object file generate by the assembler program.

a) Loading

b) Loader

c) Debuggerd) All of the above.

30) The part of 8255 can be programmed for any other mode by writing a single control

word into thea) Port

b) Control Logicc) Set/Reset

d) Register.

31) A microprocessor is a multipurpose, programmable, clock driven, register-based

electronic device (T/F)

32) Read instructions from a storage device called memory. (T/F)

33) A typical programmable machine can be represented with 4 component:

microprocessor, memory, Input/Output device, application.(T/F)

34)The physical components of this system are called the hardware. (T/F)

35) A set of instructions written for the microprocessor to perform a task is called an

application. (T/F)

36) A set of instructions written for the microprocessor to perform a task is called a

program.i. (T/F)

37) The microprocessor applications are classified primarily into 3 categories : re-programmable system and embedded system. (T/F)

38) The first microprocessor was introduced by Intel Corporation in 1971. (T/F)

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39) 4 bit microprocessor (Intel) introduced were ROCKWELL International s (PPS4).

(T/F)

40) Intels 8086 and 80286, Motorolas M 68000 and Zilogs Z8000 are some of the most

powerful-16-bit microprocessor are not available today. (T/F)

[2 Marks Questions]

41) List the four categories of 8085 instructions that manipulate data :

a) (i) Opcode : MOVand operand : A,H

b) (ii) Opcode : MOV and operand : H,L

c) (iii) Opcode : MOV and operand : B,C

d) (iv) Opcode : MOV and operand : D,E

42) Hex codes for the following instructions, identify the opcodes and operands and showthe order of entering the code in memory.

a) Hex code 305220 opcode = STA operands = 2050 H

b) Hex code 305020 opcode = STA operands = 2070 H

c) Hex code 325020 opcode = STA operands = 2050 H

d) None of the above

43) A proven that check all I/0 device & that is there any device that needs servicing is

known as

a) Spoofing

b) Synchronization

c) Spooling

d) Polling

44) Which of the following is an integral 8086 instruction.

a) Reset all

b) push all

c) aDd bx,25000

d) and ax,dx

45) DAD re instruction mean


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a) Add the content of specified reg. to center of HL & store the result in HL

b) Add 8 bit data given in inst to center of one & store the result in reg

c) Add 10 bit data given in inst to contact of HL & stout the result in HL


46) SBB R where R in register

a) Subtract reg. & borrow from acc

b) Subtract the contents of veg

c) Both a & b


47) The instruction in which intent of acc are change binary value to its equivalent 4 bit

BCD

a) DCR

b) DCX

c) DCC

d) DAA

48) The instruction in which content of specified reg. in exerted with acc & result in

placed in acc

a) XRA M

b) XRI Data

c) XRA

d) XRAR

49) Instruction then sets the carry flag

a) STC

b) STR

c) CY set

d) Set CY

50) In restart instruction content of PC are saved to

a) Memory

b) Stack

c) Register


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d) All of above

51) SPHL instruction is a

a) Stack instruction

b) Machine control instruction

c) Both a & b

d) None of above

52) Pop Report & Push R1 are

a) Reg indirect

b) Reg. direct

c) Register

d) Indirect

53) Instruction that avoids unnecessary jumps to terminate the prog

a) NOP

b) HLT

c) ei

d) OI

54) Translate Byte into is denoted as

a) X change

b) X lat

c) LDS

d) LEA

55) Mov ah, (SI)+DISP is a

a) Direct aad made

b) Direct relative add. Mode

c) Reg. Indirect Add mode

d) Immediate add mode

56) Mov (BX) (SI) + Disp , AH is ______add mode

a) Base index

b) Relative base index

c) Direct Relatives


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d) Relative

57) In base index add mode EA =

a) Sun of center of base by + contact of index by

b) Sun of contact of base Reg + content of index by + 8/16 bit displacement

c) Both a & b

d) None of above

58) And ,or, not ,xor are _____ operator

a) Arithmetic

b) Boolean

c) Seg

d) Ptr

59) SEG operator

a) Return the distance of cable

b) Res seg value of label

c) Inc seg value of cable

d) All of above

60) 1 GB represents

a) 1 billion bytes

b) 1000kb

c) 230 bits

d) 1024 bytes

[4 Marks Question]

61) Instruction cycle can be dined as sum of

a) Instruction fetch + Instruction decode

b) Instruction fetch + instruction Execute

c) Instruction fetch + instruction exit

d) All of above

62) Disk format with memory capacity of

a) 720k

b) 1200k


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c) Both a & b

d) none of above

63) Instruction cycle use ________ m/c cycle, m/c cycles. Has ___W____ #t t!

a) 0-5,103 to 6t

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b) 1

1, 3 tl 0@

c) 0-, 3%8P 11N.n` kf above

64) Which is the write prog for strong 8 bit data in memory

a) LX, H, 2000H

MVI, 52H

HLT

b) MVI A ,52H

STA 2000H

HLT

c) LXI,H,52

STA H

HLT

d. ) Both a &b

65) LZIH, 2000H

MVI A, M

INX H

ADD M

INX H

MOV M,A

HLT

This programmed

a) 2 8 bit no

b) 2 menu add

c) 2 16 bit no

d) 2 registers

66) LHLD. 2000H

XCH G

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LHLD 2002H

DAD D

SHLD 2005 H

HLT

This code is for

a) Add 2 16 bit no

b) Exchange memo clair

c) Adding 2 8 bit no

d) Loading 16 bit date

67) Which one is the correct code for finding 1st complement

a)

LDA 2200H

CMA

STA 2300H

HLT

b)

LDA 2200H

STA CMA

HLT

c.)

CMA 2200 H

STA 2300H

HLT

d.)

CDA 2200H

STA 2300H

HLT

68) Which used suits best for data transfer from 1 men block to another

a)

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MVI C,OAH

LXI H,2000H

LXI D, C2000H

MOV A,M

STA XD

INX H

INX D

DCP C

JN

b.)

MVIA, OOH

MVI B105H

ADDC

DAA

DCR B

JNZ

HLT

c.)

MVIB,OOH

MVI A, OOH

ADD B

INR B

DCR C

JNC X

d) Cant say

69) Hard disk is more stable then _________,:it can spun at higher rate (_________)

resulting ________ readopt then that of _______ size viewer in order of ______

a) Floppy disk, 1000-3600rpm, faster, floppy, disk, GB

b) Disk driver, 15000-3600rmp, slower , disk drivr, KB

c) Floppy disk , 1000-3600rpm, faster, disk driver, MB

d) None of above

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70) Match the following

a. Immediate a. LDA 2050

b. Register b. MOV A, M

c. Direct c. MVIA, 20H

d. Indirect d. MOV A,B

Correct option is

a) ac, bd, ca, db

b) ab, bd, cd, ba

c) ac, ba, dc, ab

d) aa, bb, cc, dd

71) Match the following instruction format

a. MOV instruction a. 2 bit add

b. MVI Reg, data b. 3 bit add

c. LDA, 16 Bit add c. 1 bit add

a) aa, bb, cc

b) ac, ba, cb

c) ab, ba, cc

d) bc, ab, ca

72) A instruction is used to _______ the normal seq. exaction & ________ to bytes part

of prog

a) Break, bring

b) Continuous, execute

c) Break , continuous

d) None of above

73) RRC rotate the contact of _____ right bus ___bit The _____ bit is sigh to

___________bit

a) Accumulator, 2, ms, ls

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b) A accumulation, 1, Ls, ms

c) Memory, 1, LS ,ms

d) Register , 1 , LS, MS

74) ________Is used to connect the output device to microprocessor Data is available a

the add/date best in _______ micro see

a) Latch , few

b) Flip flop , few

c) Multiplexer , 100

d) None of above

75) The net effect of calling the following sub program in terms of prog behavior-

subprogram

push ax,

add ax,10

ret

is to :-

a) Leave ax unchanged

b) add 10 to ax

c) Cause the program to behave is an incredible manner

d) Do marching

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