A single instruction to clear the lower four bits of the accumulator I 8085 assembly language is:

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A single instruction to clear the lower four bits of the accumulator I 8085 assembly language is: ANI FOH

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The content of the accumulator after the execution of the following 8085 assembly language program, is: MVI A, 42H MVI B, 05H UGC: ADD B DCR B JNZ UGC ADI 25H HLT (A) 82 H (B) 78 H (C) 76 H (D) 47 H

Description : The content of the accumulator after the execution of the following 8085 assembly language program, is: MVI A, 42H  MVI B, 05H UGC: ADD B DCR B JNZ UGC ADI 25H HLT (A) 82 H (B) 78 H (C) 76 H (D) 47 H

Last Answer : (C) 76 H

The content of the accumulator after the execution of the following 8085 assembly language program, is MVI A, 35H MOV B, A STC CMC RAR XRA B (A) 00H (B) 35H (C) EFH (D) 2FH

Description : The content of the accumulator after the execution of the following 8085 assembly language program, is MVI A, 35H MOV B, A STC CMC RAR XRA B (A) 00H (B) 35H (C) EFH (D) 2FH

Last Answer : (D) 2FH

In an 8085 microprocessor, the instruction CMP B has been executed while the contentsof accumulator is less than that of register B. As a result carry flag and zero flag will berespectively (A) set, reset (B) reset, set (C) reset, reset (D) set, set

Description : In an 8085 microprocessor, the instruction CMP B has been executed while the contentsof accumulator is less than that of register B. As a result carry flag and zero flag will berespectively (A) set, reset (B) reset, set (C) reset, reset (D) set, set

Last Answer : (A) set, reset

The Complement Accumulator (CMA) instruction of 8085 processor on execution affects...

Description : The Complement Accumulator (CMA) instruction of 8085 processor on execution affects a. Zero Flag b. Sign Flag c. Carry Flag d. None of the flags

Last Answer : B

The contents of Register (BL) and Register (AL) of 8085 microprocessor are 49H and 3AH respectively. The contents of AL, the status of carry flag (CF) and sign flag (SF) after executing 'SUB AL, BL' assembly language instruction, are (1) AL=0FH; CF=1; SF=1 (2) AL=F0H; CF=0; SF=0 (3) AL=F1H; CF=1; SF=1 (4) AL=1FH; CF=1; SF=1

Description : The contents of Register (BL) and Register (AL) of 8085 microprocessor are 49H and 3AH respectively. The contents of AL, the status of carry flag (CF) and sign flag (SF) after executing 'SUB AL, BL' assembly language instruction, are ( ... ; CF=0; SF=0 (3) AL=F1H; CF=1; SF=1 (4) AL=1FH; CF=1; SF=1

Last Answer : Answer: 3

A group of bits that tell the computer to perform a specific operation is known as_______ A. Instruction code B. Micro-operation C. Accumulator D. Register

Description : A group of bits that tell the computer to perform a specific operation is known as_______ A. Instruction code B. Micro-operation C. Accumulator D. Register

Last Answer : A. Instruction code

The stack pointer in the 8085 microprocessor is a: a) 16 bit register that points to stack memory locations b) 16 bit accumulator c) Memory location in the stack d) None of The Above

Description : The stack pointer in the 8085 microprocessor is a: a) 16 bit register that points to stack memory locations b) 16 bit accumulator c) Memory location in the stack d) None of The Above

Last Answer : a) 16 bit register that points to stack memory locations

Accumulator based microprocessor example are: a. Intel 8085 b. Motorola 6809 c. A and B d. None of these

Description : Accumulator based microprocessor example are: a. Intel 8085 b. Motorola 6809 c. A and B d. None of these

Last Answer : c. A and B

Describe Briefly The Accumulator Register Of 8085.?

Description : Describe Briefly The Accumulator Register Of 8085.?

Last Answer : Answer :It is one of the most important 8 bit register of 8085 It is responsible for coordinating input and output to and from the microprocessor through it. The primary purpose of ... logical operations. This accumulator register is mainly used for arithmetic, logical, store and rotate operations.

In an 8085 microprocessor, the contents of the Accumulator, after the following instructions are executed

Description : In an 8085 microprocessor, the contents of the Accumulator, after the following instructions are executed will become   XRA A   MVI B, F0 H   SUB B  (A) 01 H (B) 0F H (C) F0 H (D) 10 H

Last Answer : In an 8085 microprocessor, the contents of the Accumulator, after the following instructions are executed will become   XRA A   MVI B, F0 H   SUB B  (A) 01 H (B) 0F H (C) F0 H (D) 10 H

The zero flag of 8085 microprocessor is to be set keeping the content of the accumulator unchanged.

Description : The zero flag of 8085 microprocessor is to be set keeping the content of the accumulator unchanged. Which instruction is to be used?  (a) MOV A,A (b) ANI 00H (c) XRA A (d) CMP A

Last Answer : The zero flag of 8085 microprocessor is to be set keeping the content of the accumulator unchanged. Which instruction is to be used?  (a) MOV A,A (b) ANI 00H (c) XRA A (d) CMP A

In an 8085 microprocessor, the contents of accumulator, after the following instructions are

Description : In an 8085 microprocessor, the contents of accumulator, after the following instructions are executed will become   XRA A   MVI B F0H   SUB B   (a) 01 H (b) 0F H (c) F0 H (d) 10 H

Last Answer : In an 8085 microprocessor, the contents of accumulator, after the following instructions are executed will become   XRA A   MVI B F0H   SUB B   (a) 01 H (b) 0F H (c) F0 H (d) 10 H

Various machine level components are: a. Address register > Program counter c Data register d. Accumulator register e. Memory of 2K,16 bits/word RAM f. Multiplexers g. Allof these

Description : Various machine level components are: a. Address register > Program counter c Data register d. Accumulator register e. Memory of 2K,16 bits/word RAM f. Multiplexers g. Allof these

Last Answer : g. Allof these

What the Difference between accumulator and instruction register 8080?

Description : What the Difference between accumulator and instruction register 8080?

Last Answer : Examples: /360: no accumulator 8080: A 6800: A and B 8086: AX ...

The ___________ contains the address of the next instruction to be executed. a) IR b) PC c) Accumulator d) System counter

Description : The ___________ contains the address of the next instruction to be executed. a) IR b) PC c) Accumulator d) System counter

Last Answer : Answer: b Explanation: PC stands for program counter (It contains the address of the next instruction to be executed)

The load instruction is mostly used to designate a transfer from memory to a processor register known as_________ A. Accumulator B. Instruction Register C. Program counter D. Memory address Register

Description : The load instruction is mostly used to designate a transfer from memory to a processor register known as_________ A. Accumulator B. Instruction Register C. Program counter D. Memory address Register

Last Answer : A. Accumulator

A basic instruction that can be interpreted by computer generally has ________ A. An operand and an address B. decoder and an accumulator C. Sequence register and decoder D. None of the Above

Description : A basic instruction that can be interpreted by computer generally has ________ A. An operand and an address B. decoder and an accumulator C. Sequence register and decoder D. None of the Above

Last Answer : A. An operand and an address

In microprocessor the next instruction to be executed is stored in a) Program Counter b) Stack Pointer c) Memory Pointer d) Accumulator

Description : In microprocessor the next instruction to be executed is stored in a) Program Counter b) Stack Pointer c) Memory Pointer d) Accumulator

Last Answer : Ans: Program Counter

When a subroutine is called, the address of the instruction following the CALL instructions stored in/on the a. stack pointer b. accumulator c. program counter d. stack

Description : When a subroutine is called, the address of the instruction following the CALL instructions stored in/on the a. stack pointer b. accumulator c. program counter d. stack

Last Answer : d. stack

The contents of accumulator before CMA instruction is A5H. Its content after instructionexecution isa) A5H b) 5AH

Description : The contents of accumulator before CMA instruction is A5H. Its content after instructionexecution isa) A5H b) 5AH

Last Answer : b) 5AH

What is the Result of RR A instruction if accumulator contains 1000 0000. a) 0000 0001 b) 0000 0000 c) 0100 0000 d) 0000 0010

Description : What is the Result of RR A instruction if accumulator contains 1000 0000. a) 0000 0001 b) 0000 0000 c) 0100 0000 d) 0000 0010

Last Answer : a) 0000 0001

Which of the following instruction perform the move accumulator to external RAM of 16bit address? a) MOV @ DPTR, A b) MOVX @ Ri, A c) MOV A, @ Ri d) MOVX @ DPTR, A

Description : Which of the following instruction perform the move accumulator to external RAM of 16bit address? a) MOV @ DPTR, A b) MOVX @ Ri, A c) MOV A, @ Ri d) MOVX @ DPTR, A

Last Answer : c) MOV A, @ Ri

Which of the following instruction perform as of indirect RAM to accumulator? a) MOV A, Rn b) MOV @Ri, A c) MOV A, @Ri d) MOV Rn, A

Description : Which of the following instruction perform as of indirect RAM to accumulator? a) MOV A, Rn b) MOV @Ri, A c) MOV A, @Ri d) MOV Rn, A

Last Answer : c) MOV A, @Ri

The act of writing new data into register (1) is possible only when the register is an accumulator (2) is possible only when the register is an accumulator or instruction register (3) erases the previous contents of the register (4) is non-destructive to existing contents

Description : The act of writing new data into register (1) is possible only when the register is an accumulator (2) is possible only when the register is an accumulator or instruction register (3) erases the previous contents of the register (4) is non-destructive to existing contents

Last Answer :  is possible only when the register is an accumulator or instruction register

If initial content of accumulator is 44 H, find out the new content of accumulator after execution of the instruction RR A

Description : If initial content of accumulator is 44 H, find out the new content of accumulator after execution of the instruction RR A

Last Answer : Contents of Acc will be 22H ( as RR A divides acc by 2)

Find out the incorrect feature of Assembly language among following: a) It is also provided by the manufacturer b) One instruction for each computer operation c) Instruction codes are represented by mnemonics (a set of letters) and the code must be assembled into machine language for execution d) All of the Above e) None of These

Description : Find out the incorrect feature of Assembly language among following: a) It is also provided by the manufacturer b) One instruction for each computer operation c) Instruction codes are represented by mnemonics ... be assembled into machine language for execution d) All of the Above e) None of These

Last Answer : e) None of These

The 8O85 assembly language instruction that stores the contents of H and L registers into the memory

Description : The 8O85 assembly language instruction that stores the contents of H and L registers into the memory locations 2050H and 2051H, respectively, is: A) SPHL 2050H B) SPHL 2051H C) SHLD 2050H D) STAX 2050H

Last Answer : The 8O85 assembly language instruction that stores the contents of H and L registers into the memory locations 2050H and 2051H, respectively, is: SHLD 2050H

How many operations are there in the instruction set of 8085 microprocessor?

Description : How many operations are there in the instruction set of 8085 microprocessor?

Last Answer : There are 74 operations in the 8085 microprocessor.

How many speed of 8088,8085,8086 microprocessor: a. 2.5 Million instruction per second b. 1.5 Million instruction per second c. 3.5 Million instruction per second d. 1.6 Million instruction per second

Description : How many speed of 8088,8085,8086 microprocessor: a. 2.5 Million instruction per second b. 1.5 Million instruction per second c. 3.5 Million instruction per second d. 1.6 Million instruction per second

Last Answer : a. 2.5 Million instruction per second

8253, 8257 c) 8257,8251 d)8251,825721.Consider the following set of 8085 instruction.MVI A,82HORA AJP DSPLYXRA ADSPLY:OUT PORT1HLT.The output at PORT1 isa) 00H b) FFH c) 92H d) 11H

Description : 8253, 8257 c) 8257,8251 d)8251,825721.Consider the following set of 8085 instruction.MVI A,82HORA AJP DSPLYXRA ADSPLY:OUT PORT1HLT.The output at PORT1 isa) 00H b) FFH c) 92H d) 11H

Last Answer : a) 00H

The RST 7 instruction in 8085 microprocessor is equivalent to: (A) CALL 0010 H (B) CALL 0034 H (C) CALL 0038 H (D) CALL 003C H

Description : The RST 7 instruction in 8085 microprocessor is equivalent to: (A) CALL 0010 H (B) CALL 0034 H (C) CALL 0038 H (D) CALL 003C H

Last Answer : (C) CALL 0038 H

Then number of T-states of the instruction STA in 8085 microprocessor is

Description : Then number of T-states of the instruction STA in 8085 microprocessor is A) 10 B) 12 C) 13 D) 16 

Last Answer : Then number of T-states of the instruction STA in 8085 microprocessor is 13 

In an 8085 microprocessor, after the execution of XRA A instruction

Description : In an 8085 microprocessor, after the execution of XRA A instruction A) the carry flag is set B) the accumulator contains FFH C) the zero flag is set D) the accumulator contents are shifted left by one bit

Last Answer :  In an 8085 microprocessor, after the execution of XRA A instruction the zero flag is set 

Which flag does not change by the execution of the instruction DCR B in 8085 microprocessor ?

Description : Which flag does not change by the execution of the instruction DCR B in 8085 microprocessor ?  (a) Parity (b) Carry (c) Zero (d) Sign

Last Answer : Which flag does not change by the execution of the instruction DCR B in 8085 microprocessor ?  (a) Parity (b) Carry (c) Zero (d) Sign

List any four salient features of 8085 microprocessor

Description : List any four salient features of 8085 microprocessor

Last Answer : Features of 8085:  1. 16 address line so 216=64 Kbytes of memory can be addressed.  2. Operating clock frequency is 3MHz and minimum clock frequency is 500 KHz.  3. On chip bus controller ... duty cycle TTL clock  10. Provide 2 serial I/O lines, so peripheral can be interfaced with 8085 μp

A computer which CPU speed around 100 million instruction per second and with the word length of around 64 bits is known as A) Super computer B) Mini computer C) Micro computer D) Macro computer

Description : A computer which CPU speed around 100 million instruction per second and with the word length of around 64 bits is known as A) Super computer B) Mini computer C) Micro computer D) Macro computer

Last Answer : Answer : A

__is divided into a number of fields and is represented as a sequence of bits: a. instruction b. — instruction set c. instruction code d. parity code

Description : __is divided into a number of fields and is represented as a sequence of bits: a. instruction b. — instruction set c. instruction code d. parity code

Last Answer : a. instruction

Which instruction are 32 bits long , with extra 16 bits. a. Memory reference instruction b. Memory reference format c. Both d. None of these

Description : Which instruction are 32 bits long , with extra 16 bits. a. Memory reference instruction b. Memory reference format c. Both d. None of these

Last Answer : a. Memory reference instruction

In instruction formats instruction is represent by a___ _ of bits: a. Sequence b. Parallel c. Both d. None

Description : In instruction formats instruction is represent by a___ _ of bits: a. Sequence b. Parallel c. Both d. None

Last Answer : a. Sequence

a computer which CPU speed around 100 million instruction per second and with the word length of around 64 bits is known as a. Super computer b. Mini computer c. Micro computer d. Macro computer

Description : a computer which CPU speed around 100 million instruction per second and with the word length of around 64 bits is known as a. Super computer b. Mini computer c. Micro computer d. Macro computer

Last Answer : Super computer

a computer which CPU speed around 100 million instruction per second and with the word length of around 64 bits is known as a. Super computer b. Mini computer c. Micro computer d. Macro computer

Description : a computer which CPU speed around 100 million instruction per second and with the word length of around 64 bits is known as a. Super computer b. Mini computer c. Micro computer d. Macro computer

Last Answer : Super computer

a computer which CPU speed around 100 million instruction per second and with the word length of around 64 bits is known as a. Super computer b. Mini computer c. Micro computer d. Macro computer

Description : a computer which CPU speed around 100 million instruction per second and with the word length of around 64 bits is known as a. Super computer b. Mini computer c. Micro computer d. Macro computer

Last Answer : a. Super computer

a computer which CPU speed around 100 million instruction per second and with the word length of around 64 bits is known as a. Super computer b. Mini computer c. Micro computer d. Macro computer

Description : a computer which CPU speed around 100 million instruction per second and with the word length of around 64 bits is known as a. Super computer b. Mini computer c. Micro computer d. Macro computer

Last Answer : a. Super computer

A byte addressable computer has a memory capacity of 2 m Kbytes and can perform 2 n operations. An instruction involving 3 operands and one operator needs a maximum of (A) 3m bits (B) m + n bits (C) 3m + n bits (D) 3m + n + 30 bits

Description : A byte addressable computer has a memory capacity of 2 m Kbytes and can perform 2 n operations. An instruction involving 3 operands and one operator needs a maximum of (A) 3m bits (B) m + n bits (C) 3m + n bits (D) 3m + n + 30 bits

Last Answer : (D) 3m + n + 30 bits

Which section is basically a sequence of instruction with a clear indication of beginning and end for updating shared variables. a. Racing section b. Critical section c. d. Both None of thes

Description : Which section is basically a sequence of instruction with a clear indication of beginning and end for updating shared variables. a. Racing section b. Critical section c. d. Both None of thes

Last Answer : . Critical sectio

The nurse instructs the nursing attendant to perform cleansing enema until the return flow is clear. The nursing attendant understood the instruction when she says, “I will A. Call you when the return flow is clear” B. Stop the enema only if the return flow is without formed fecal material” C. Need 1 liter of tap water to have clear return flow” D. Put the client in left Sim’s position to achieve the desired return flow.”

Description : The nurse instructs the nursing attendant to perform cleansing enema until the return flow is clear. The nursing attendant understood the instruction when she says, I will A. Call you when the return flow is ... flow D. Put the client in left Sim's position to achieve the desired return flow.

Last Answer : A. Call you when the return flow is clear”

To put the 8085 microprocessor in the wait state(i) lower the-HOLD input (ii) lower the READY input (iii) raise the HOLD input(iv) raise the READY input

Description : To put the 8085 microprocessor in the wait state(i) lower the-HOLD input (ii) lower the READY input (iii) raise the HOLD input(iv) raise the READY input

Last Answer : (ii) lower the READY input

Which is most commonly measured in terms of MIPS previously million instruction per second: a. Microprocessor b. Performance of a microprocessor c. Assembly line d. None of thes

Description : Which is most commonly measured in terms of MIPS previously million instruction per second: a. Microprocessor b. Performance of a microprocessor c. Assembly line d. None of thes

Last Answer : b. Performance of a microprocessor

List the four instructions which control the interrupt structure of the 8085 microprocessor.

Description : List the four instructions which control the interrupt structure of the 8085 microprocessor.

Last Answer : • DI ( Disable Interrupts ) • EI ( Enable Interrupts ) • RIM ( Read Interrupt Masks ) • SIM ( Set Interrupt Masks )

Which of the following statements is true when we see 'rainbow'? (1) We face sun and raindrops (3) 11 Km/Sec. (3) In light rainfall, we face Sun (4) The sky remains clear and the sun is at lower position in the sky

Description : Which of the following statements is true when we see 'rainbow'? (1) We face sun and raindrops (3) 11 Km/Sec. (3) In light rainfall, we face Sun (4) The sky remains clear and the sun is at lower position in the sky

Last Answer : (3) 11 Km/Sec. Explanation: We see rainbows because of the geometry of raindrops. When the sun shines from behind us into the rain, incident rays of light enter the drop and are refracted inwards ... in water droplets in the Earth's atmosphere, resulting in a spectrum of light appearing in the sky.