What the Difference between accumulator and instruction register 8080?

What the Difference between accumulator and instruction register 8080?
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Examples: /360: no accumulator 8080: A 6800: A and B 8086: AX ...
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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 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 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 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

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)

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

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)

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

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

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

Main storage is also called A) Accumulator B) Control Unit C) Register Unit D) Memory

Description : Main storage is also called A) Accumulator B) Control Unit C) Register Unit D) Memory

Last Answer : Answer : D

________ is a register for Short-term, intermediate storage of arithmetic and logic data in a Computer’s CPU. A. Accumulator B. Bus C. Buffer D. None of the Above

Description : ________ is a register for Short-term, intermediate storage of arithmetic and logic data in a Computer’s CPU. A. Accumulator B. Bus C. Buffer D. None of the Above

Last Answer : A. Accumulator

The function of these microinstructions is to issue the micro orders to_ _ a. CPU b. Memory c. Register d. Accumulator

Description : The function of these microinstructions is to issue the micro orders to_ _ a. CPU b. Memory c. Register d. Accumulator

Last Answer : a. CPU

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

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

Which is used to store critical pieces of data during subroutines and interrupts: a. Stack b. Queue c. Accumulator d. Data register

Description : Which is used to store critical pieces of data during subroutines and interrupts: a. Stack b. Queue c. Accumulator d. Data register

Last Answer : a. Stack

In Microprocessor one of the operands holds a special register called: a. Calculator b. Dedicated c. Accumulator d. None of these

Description : In Microprocessor one of the operands holds a special register called: a. Calculator b. Dedicated c. Accumulator d. None of these

Last Answer : c. Accumulator

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.

Write A Program That Will Store The Contents Of An Accumulator And Flag Register At Locations 2000h And 2001h.?

Description : Write A Program That Will Store The Contents Of An Accumulator And Flag Register At Locations 2000h And 2001h.?

Last Answer : Answer :By making use of the Push & Pop instructions the program can be written as: LXISP, 4000H - this step initiates the SP at 4000h. PUSH PSW - the contents of the accumulator and flag are pushed into the stack. POP B MOV A, B STA 2000H MOV A, C STA 2001H HLT

The first microprocessor built by the Intel corporation was called A) 8008 B) 8080 C) 4004 D) 8800

Description : The first microprocessor built by the Intel corporation was called A) 8008 B) 8080 C) 4004 D) 8800

Last Answer : Answer : C

The client code recognizes the SSL request and establishes a connection through TCP port ____ to the SSL code on the server A. 1023 B. 402 C. 443D. 8080

Description : The client code recognizes the SSL request and establishes a connection through TCP port ____ to the SSL code on the server A. 1023 B. 402 C. 443 D. 8080

Last Answer : C. 443

Which is the microprocessor launched by Intel: a. Z-8 b. 8080 c. 8000 d. None of these

Description : Which is the microprocessor launched by Intel: a. Z-8 b. 8080 c. 8000 d. None of these

Last Answer : b. 8080

In 1977 which corporation introduced an updated version of the 8080- the 8085: a. Motorola b. Intel c. Rockwell d. National

Description : In 1977 which corporation introduced an updated version of the 8080- the 8085: a. Motorola b. Intel c. Rockwell d. National

Last Answer : b. Intel

Which year Intel corporation introduced an updated version of the 8080- the 8085: a. 1965 b. 1976 c. 1977 d. 1985

Description : Which year Intel corporation introduced an updated version of the 8080- the 8085: a. 1965 b. 1976 c. 1977 d. 1985

Last Answer : c. 1977

Intel 8008 microprocessor’s upgraded version is: a. 8080 b. 4004 c. Both A and B d. None of these

Description : Intel 8008 microprocessor’s upgraded version is: a. 8080 b. 4004 c. Both A and B d. None of these

Last Answer : a. 8080

Which is the microprocessor launched by Motorola corporation introduced: a. Mc6800 b. 8080 c. IMP-8 d. RPS-8

Description : Which is the microprocessor launched by Motorola corporation introduced: a. Mc6800 b. 8080 c. IMP-8 d. RPS-8

Last Answer : a. Mc6800

The first microprocessor built by the Intel Corporation was called a. 8008 b. 8080 c. 4004 d. 8800

Description : The first microprocessor built by the Intel Corporation was called a. 8008 b. 8080 c. 4004 d. 8800

Last Answer : c. 4004

The first microprocessor built by the Intel Corporation was called a. 8008 b. 8080 c. 4004 d. 8800

Description : The first microprocessor built by the Intel Corporation was called a. 8008 b. 8080 c. 4004 d. 8800

Last Answer : c. 4004

Which of the following registers is used to keep track of address of the memory location where the next instruction is located? A) Memory address register B) Memory data register C) Instruction register D) Program counter

Description : Which of the following registers is used to keep track of address of the memory location where the next instruction is located? A) Memory address register B) Memory data register C) Instruction register D) Program counter

Last Answer : Answer : D

Which of the following registers is loaded with the contents of the memory location pointed by the PC? A) Memory address registers B) Memory data registers C) Instruction register D) Program counter

Description : Which of the following registers is loaded with the contents of the memory location pointed by the PC? A) Memory address registers B) Memory data registers C) Instruction register D) Program counter

Last Answer : Answer : C

Content of the program counter is added to the address part of the instruction in order to obtain the effective address is called_______ A. relative address mode. B. index addressing mode. C. register mode. D. implied mode.

Description : Content of the program counter is added to the address part of the instruction in order to obtain the effective address is called_______ A. relative address mode. B. index addressing mode. C. register mode. D. implied mode.

Last Answer : A. relative address mode.

The register which holds the address of the location to or from which data are to be transferred is known as_______ A. Instruction Register B. Control register C. Memory Address Register D. None of the Above

Description : The register which holds the address of the location to or from which data are to be transferred is known as_______ A. Instruction Register B. Control register C. Memory Address Register D. None of the Above

Last Answer : C. Memory Address Register

The decoded instruction is stored in ______ (A) Register (B) Memory Address Register(MAR) (C) Instruction Register(IR) (D) None of the Above

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Last Answer : (C) Instruction Register(IR)

Which registers can interact with secondary memory? (A) Register (B) Memory Address Register(MAR) (C) Instruction Register(IR) (D) None of the Above

Description : Which registers can interact with secondary memory? (A) Register (B) Memory Address Register(MAR) (C) Instruction Register(IR) (D) None of the Above

Last Answer : (B) Memory Address Register(MAR)

The instruction fetch operation is initiated by loading the contents of program counter into the and sends _ request to memory: a. Memory register and read b. Memory register and write c. Data register and read d. Address register and read

Description : The instruction fetch operation is initiated by loading the contents of program counter into the and sends _ request to memory: a. Memory register and read b. Memory register and write c. Data register and read d. Address register and read

Last Answer : d. Address register and read

The instruction read from memory is then placed in the ___and contents of program counter is __ so that it contains the address of_ __ instruction in the program. a. Program counter, incremented and next b. Instruction register, incremented and previous c. Instruction register, incremented and next d. Address register, decremented and next

Description : The instruction read from memory is then placed in the ___and contents of program counter is __ so that it contains the address of_ __ instruction in the program. a. Program counter, ... incremented and previous c. Instruction register, incremented and next d. Address register, decremented and next

Last Answer : c. Instruction register, incremented and next

Beat instruction register prepared in form a) MS 32 b) MS 31 c) MS 30 d) MS 24

Description : Beat instruction register prepared in form a) MS 32 b) MS 31 c) MS 30 d) MS 24

Last Answer : a) MS 32

Which register holds the next instruction to be executed:

Description : Which register holds the next instruction to be executed:

Last Answer : c. Program control register

Which register holds the current instruction to be executed. a. Instruction register b. Program register 9 Control register a None of these

Description : Which register holds the current instruction to be executed. a. Instruction register b. Program register 9 Control register a None of these

Last Answer : a. Instruction register

Acontrol memory is__ stored in some area of memory: a. Control instraction b. Memory instruction c. Register instruction d. None of these

Description : Acontrol memory is__ stored in some area of memory: a. Control instraction b. Memory instruction c. Register instruction d. None of these

Last Answer : a. Control instraction

Opcode is the machine instruction obtained from decoding instruction stored in. a. Stack pointer b. Address pointer Cc. Instruction register d. Incrementer

Description : Opcode is the machine instruction obtained from decoding instruction stored in. a. Stack pointer b. Address pointer Cc. Instruction register d. Incrementer

Last Answer : Cc. Instruction register

Which is the input of control unit: a. Master clock signal b. Instruction register c. Flags d. Control signals from bus e. Allof these

Description : Which is the input of control unit: a. Master clock signal b. Instruction register c. Flags d. Control signals from bus e. Allof these

Last Answer : e. Allof these

Which are contains one or more register that may be referenced by machine instruction: a. Input b. Output c. CPU d. ALU

Description : Which are contains one or more register that may be referenced by machine instruction: a. Input b. Output c. CPU d. ALU

Last Answer : c. CPU

In which addressing the operand is actually present in instruction: a. Immediate addressing b. Direct addressing 9 Register addressing a None of these

Description : In which addressing the operand is actually present in instruction: a. Immediate addressing b. Direct addressing 9 Register addressing a None of these

Last Answer : a. Immediate addressing

The Supdt may prescribe the use, in any Head or Sub office of a beat instruction register ______ for the purpose of communication addressees instructions to the postman a) M 32 b) M 34 c) M 28 d) None of these

Description : The Supdt may prescribe the use, in any Head or Sub office of a beat instruction register ______ for the purpose of communication addressees instructions to the postman a) M 32 b) M 34 c) M 28 d) None of these

Last Answer : a) M 32