Micro

Which of the following instructions is used to transfers a byte , word , or doubleword of data from a data segment memory location to an I/O device ?. INS. OUTS. STOS. LODS.

The first 1M bytes of memory in a DOS-based computer system contains a .... and ... area. TPA , Extended Memory. System , Extended Memory. Real , Memory. TPA , System.

Intel 8086/8088 microprocessor is a .... microprocessor. 4-bit. 8-bit. 16-bit. 32-bit.

8086/8088 can access up to ... 512KB. 1 MB. 2 MB. 8 MB.

What is the function of the instruction pointer (IP) in the 8086 microprocessor. It points to the data segment. It is used for interrupt handling. It stores the address of the next instruction to be executed. it holds the stack pointer.

Which of the following is not a property of TRAP interrupt in microprocessor ?. It is a non-maskable interrupt. it is of highest priority. it uses edge-triggered signal. It is a vectored interrupt.

a 23-bit address bus can locate. 1,046,576 locations. 2,097,152 locations. 4,194,304 locations. 8,388,608 locations.

How many address lines are present in 8086 microprocessor?. 16. 20. 32. 40.

..... are the register that are addressable directly during application programming. Program visible registers. Program invisible registers. Segment registers. None.

Which of the following instructions is not valid ?. MOV AX , BX. MOV DS , 0FA5H. MOV AX, 5000H. PUSH 23EAH.

Which of the following is not a status flag in microprocessor?. overflow flag. direction flag. interrupt flag. index flag.

Which of the following is not a condition flag?. Trap flag. Auxiliary carry flag. Parity flag. Zero flag.

A memory connected to a microprocessor has 20 address lines and 16 data lines . what will be the memory capacity. 8 KB. 2 MB. 16 MB. 64 KB.

Which of the following is true ?. Every instruction has 2 parts : opcode & operands. MOV D, C is a two-byte instruction. MVI A, 90H is a three-byte instruction. Maximum number of T-states possible for the execution of an instruction is 16.

Which of the following addressing mode is used by 8085 microprocessor for array and list operations ?. Direst. Indexed. Immediate. Base-Register.

What is stored in the H & L general-purpose register. opcode. Address of memory. Address of next instruciton. Temperury data.

Which of the following addressing method does the instruction , MOV AX , [BX] represent ?. register indirect addressing mode. direct addressing mode. register addressing mode. register relative addressing mode.

What is the word length of an 8-bit microprocessor?. 8-bits - 64 bits. 4-bits - 32 bits. 8-bits - 16 bits. 8-bits - 32 bits.

Which of the following is true about stack pointer ?. Stack pointer contains the address of the top of the stack memory. Stack pointer is an 8-bit register. Stack pointer stores data permnently. Stack pointer is initialized after stack operation.

Which of the following is true about MOV A,B instruction?. It means move the content of register A to register B. It uses immediate addressing mode. it doesn't affect the flag register. it is a 2 byte instruction.

What is Microprocessor?. A multipurpose PLD that accepts binary data as input. A multipurpose PLD that accepts an integer as input. A multipurpose PLD that accepts whole numbers as input. A multipurpose PLD that accepts prime numbers as input.

Suppose registers "A" and "B" contain 50H and 40H After instruction MOV A, B will be the contents of registers A and B. 40H , 40H. 50H , 40H. 50H , 50H. 60H, 40H.

Which of the following is a 2-word instruction set ?. LDA 2500H. MOV A, B. IN 01H. IMP 2085H.

The FAR jumps are often called. None. Intersegment Jumps. Conditional Jumps.

the .... directive instructs the assembler to begin memory allocation for a segment/block/code from the stated address. GROUP. OFFSET. ORG. Label.

in 8-bit microprocessor , how many opcodes are present?. 246. 278. 250. 256.