Microprocessor 8086

1) the first digital electronic computer was built in the year ________

Answer Is: (C) 1940

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2) in a minimunm mode there is a ________on the system bus.

Answer Is: (A) single

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3) the les copies to words from memory to register and _________

Answer Is: (C) es

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4) the js is called as____

Answer Is: (A) jump the signed bit

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5) what is den?

Answer Is: (C) data enable

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6) lds copies to consecutive words from memory to register and _____

Answer Is: (B) DS

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7) 8086 does not suppport

Answer Is: (D) direct bcd packed multiplication

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8) the full name of daa is_________

Answer Is: (C) decimal adjust accumulator

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9) the bp is indicated by_____

Answer Is: (A) base pointer

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10) in push instruction, after each execultion of the instruction,the stack point is

Answer Is: (D) decremented by 2

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11) pop operation

Answer Is: (B) increments sp

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12) the sp is indicated by________

Answer Is: (B) stack pointer

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13) a microprocessor is a__chip integrating all the functions of a CPU of a computer.

Answer Is: (B) single

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14) thebibu contains fifo register of size 6byte called____.

Answer Is: (A) queue

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15) the primary function of the ____is to accept data from i/p devices.

Answer Is: (B) microprocessor

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16) ______signal prevent the microprocessor from reading the same data more than one.

Answer Is: (B) handshaking

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17) how many bits are used in the data bus?

Answer Is: (A) 8

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18) the carry flag is underfined after performing thr operation

Answer Is: (D) aad

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19) push operation

Answer Is: (A) decrements sp

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20) in8086 microprocessor the following has the highest priority among all type interrupts?

Answer Is: (A) nmi

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21) the 8086fetches instruction one after another from___of memory.

Answer Is: (A) code segment

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22) how many buses are connected as part of the 8085a microprocess?

Answer Is: (C) 3

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23) which instruction cannot force the 8086 processor out of 'halt' state?

Answer Is: (D) hold

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24) the stack segment register contains

Answer Is: (B) base address of the stack segment

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25) the instruction that is used for finding out the codes in case of code conversion problem is

Answer Is: (B) xlat

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26) the remaining address line of_____bus is decoded to generate chip select signal

Answer Is: (B) address

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27) cs connect the output of________

Answer Is: (B) decoder

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28) the intel is a ______processor.

Answer Is: (B) 16bit

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29) in a machine instruction format,s-bit is the

Answer Is: (C) sign extension bit

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30) the propose of the microprocessor is to control____

Answer Is: (A) memory

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31) the conditional branch instruction specify______for branching.

Answer Is: (A) conditions

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32) for 8086 microprocessor the stack segment may have a memory block of a maximum of

Answer Is: (B) 64k bytes

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33) which of the following is not a data copy/transfer instruction?

Answer Is: (C) das

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34) the oinstruction that supports addition when carry exists is

Answer Is: (B) adc

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35) the_____translates a byte from one code to another code.

Answer Is: (A) xlat

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36) in gegnera,the source operand of an instruction can b

Answer Is: (D) all of the above

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37) in 8086 example for non maskable interrupte are_____

Answer Is: (A) trap

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38) which of the followimg instruction is not valid?

Answer Is: (B) mov ds,5000h

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39) operation code field is present in:

Answer Is: (C) machine language instruction

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40) the adress bits are sent out on lines thought _____

Answer Is: (A) a16-19

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41) _____destination inverts each bit of destination

Answer Is: (A) not

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42) 8086 and 8088 contains_____transistors.

Answer Is: (A) 29000

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43) the_____is required to synchronize the internal operands in the processor clk signal.

Answer Is: (A) ur signal

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44) the ss is called as________

Answer Is: (B) stack segment

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45) bits in irr interrupt are_____

Answer Is: (B) set

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46) the _____contains an offset instead of actual address.

Answer Is: (B) ip

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47) the instruction that enables subtraction with borrow is

Answer Is: (C) sbb

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48) memory is an integral part of a _____system

Answer Is: (B) microcomputer

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49) to perform any operations the mp should identify the_______

Answer Is: (A) register

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50) when was the first 8-bit microprocessor introduced?

Answer Is: (D) 1974

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