Programs of microprocessor

Microprocessor cannot understand a program written in Assembly Language .
Instruction are divided into bit pattern of word in byte as op-code(operation code) and operation
Instruction format has three types
1.One byte-has op-code
2.Two byte- has op-code and address
3.Three byte -has code and address lower byte and address higher byte

opcode

1 byte

opcode

Data / address

2 byte

opcode

Data / address Lower byte

Data Address Higher byte

3 byte

Instructions set for 8085 are classified into five categories:
1.Data transfer group instructions
2.Arithmetic group of instrructions
3.Logical group
4.Branching group
5.Machine Level
A program known in Assembler is used to covert a Assembly language program to machine language.
I) Data transfer copy operation:-

1)Load a 8 bit number in a register
2)Copy from Register to Register
3)Copy between Register and Memory
4)Copy between Input/Output Port and Accumulator
5)Load a 16 bit number in a Register pair
6) Copy between Register pair and Stack memory

Example :-
1.Load a 8 bit number 4F in register B                     -MVI   B ,4FH
2.Copy from Register B to Register A                     -MOV  A,B
3.Load a 16 bit number 2050 in Register pair HL     -LXI     H,2050H
4.Copy from Register B to Memory Address 2050  - MOV   M,B
5.Copy between Input/Output Port and Accumulator- OUT   01H      IN   07H

2)Arithmetic operations and instructions

1.Add 8 bit number 32 H to Accumulator                   -ADI   32 H
2.Add contents of Register B to Accumulator            - ADD B
3.Subtract a 8 bit number 32 H from Accumulator      - SUI   32H
4.Subtract contents of Register C from Accumulator   -SUB  C
5.Increment the contents of Register D by 1                - INR   D
6.Decrement the contents of Register E by 1               -  DCR   E

3)Logical and Bit Manipulation operations and instructions

1.Logically AND Register H with Accumulator             -ANA  H
2.Logically OR Register L with Accumulator                 -ORA   L
3.Logically XOR Register B with Accumulator             - XRA   B
4.Compare contents of Register C with Accumulator  -CMP  C
5.Complement Accumulator                                            -CMA
6.Rotate Accumulator Left                                             -RAL

Program to add two 8 bit numbers and store result in register C

1.Get two numbers
a) Load first no. in register D                                        MVI   D , 2H
b)Load  second no. in register E                                    MVI   E , 3H

2.Add them
a) Copy register D to A                                                  MOV  A , D
b) Add register E to A                                                     ADD E

3. Store result
a)Copy A to register  C                                                  MOV  C , A

4.Stop
a)Stop processing                                                            HLT


Program to add 8 bit number result can be more than 8 bits i.e.with carry present

1.Get two numbers
a) Load first no. in register D                                        MVI   D , 2H
b)Load  second no. in register E                                    MVI   E , 3H

2.Add them
a) Copy register D to A                                                  MOV  A , D
b) Add register E to A                                                     ADD E

3. Store result
a)Copy A to register  C                                                  MOV  C , A

4.Carry
a)Use conditional Jump instructions                           JNC  END

5.Change
a)Clear register B                                                          MVI  B ,0H
b)Increment B                                                                INR  B

6.Stop
a)Stop processing                                                         HLT

Solve

SOLVE

 1) Find the odd man out - 49,  81 ,100 ,144
A) 49
B) 81
C) 100
D) 144

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2)Which of the following numbers is different from others?
A) 3156
B) 4164
C) 5255
D) 6366

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3)Fill the blank
5,35,7,42,6 ,_____,9,36,4.
A) 45
B) 48
C) 54
D) 56 

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4)Find odd man out :DFEG,  JKLM,   GHIK,   RTSU
A) DFEG
B)JKLM
C)GHIK
D)RTSU

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5) find odd man out 1,3,10,21,64,129,256,778
1) 10
2) 21
3) 129
4) 256

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6)The missing number in the series is:
0 , 6 , 24 , 60 , 120 , ? , 336 is
A) 240
B) 220
C) 280
D)210

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7)Let a means minus (-) ,b means multiplied by (*), C means divided by (/) and D means plus(+).The value of 90 D 9 a 29 C 10 b 2
A) 8
B) 10
C) 12
D) 14

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8)If MOHAN is represented by the code KMFYL, then COUNT will be represented by
A) AMSLR
B) MSLR
C) MASRL
D)SAMLR

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9)  32     33      37    46     62    ?
Replace ? by
A)85
B) 87
C) 94
D) 99

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10)AZ       DW        GT       JQ     ? .Replace ? from following
A) LD
B) MN
C) MO
D) NM

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11) In certain code language ,PUNE is written as SXQH.How would you write DELHI in this language?
A )  FGNJL
B )  FGNJK
C )  GHOKM
D )  GHOKL

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12)Find odd man out:
A)  6
B ) 18
C )  24
D )  36

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13)Find the wrong term in the following series:
68    66     62    59     56    53
A)  59
B)  62
C)  66
D)  68

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14)If P is the brotherb of Q;Q is the son of R; Sis R's father .What is P of S?
A)  Son
B)  Brother
C)  Grandson
D)  Grandfather

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15) The missing number in the series 40 , 120 , 60 , 180 , 90 , ? , 135
A)  110
B)  270
C)  105
D)  210

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16) The length and breadth of  a rectangle are changed by +20% and by -10% respectively.What is the percentage change in the area of rectangle?
A)  10%
B)  12.5%
C)  8%
D)  15%

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17) Two pipes A and B can fill a tyank in 15 minutes and 20  minutes respectively .Both the pipes are opened together but after 4 minutes,pipe A is turned off. What is the total time required to fill the tank?
A) 10 min.40 sec
B) 11 min.45 sec
C) 12 min.30 sec
D)  14 min.40sec

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18)The odd number from 1 to 45 which are exactly divisible by 3 are arranged in an ascending order .The number at 6^th position is
A)  18
B)  24
C)  33
D)  36

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19) If the radius of a circle is increased by 50%, the perimeter of the circle will increase by

A) 30
B)  85/2
C)  170/3
D)  110

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20) In code language, the word BAD is written as 658 .In the same language, what could be the code for FIG?
A)  9         12       10
B) 10        13        11
C) 8          11       13
D) 10        12       13