Which Stack is used in 8086?

Correct Answer: Execution Unit receives program instruction codes and data from BIU, executes these instructions and store the result in general registers

Correct Answer: Bus Interface Unit and Execution unit, are the two different functional units in 8086

Correct Answer: An interrupt which can be never be turned off (ie disabled) is known as Non-Maskable interrupt

Correct Answer: An interrupt that can be turned off by the programmer is known as Maskable interrupt

Correct Answer: There are three types of buses Address bus: This is used to carry the Address to the memory to fetch either Instruction or Data Data bus: This is used to carry the Data from the memory Control bus: This is used to carry the Control signals like RD/WR, Select etc

Correct Answer: In 8086 Carry flag, Parity flag, Ausiliary caarry flag, Zero flag, Overflow flag, Trace flag, Interrupt flag, Direction flag, and Sign flag

Correct Answer: Use the concept of register-retiming divide the totla combinatorial delay in two segments such that individually the delay is less the clock period this can be done by inserting a flip-flop in the combinational path eg, clock period --- 5 ns total cominational delay ---- 7 then divide the 7ns path in two path of 4 or 3 (best resutls are obtained if delays are same for both path ie 35ns) by inserting a flip-flop in between

Correct Answer: A SIPO and AND gate circuit can detect this sequenceThe output of SIPO is connected to a four input AND gate ,the third SIPO output should be connected through a NOT gateWhen the 1101 sequence is loaded in to the SIPO the AND output goes HIGH otherwise keeps LOW

Correct Answer: TRUTH TABLE FOR HALF ADDER A B SUM CARRY 0 0 0 0 0 1 1 0 1 0 1 0 1 1 0 1 INPLEMENTATION: For SUM, The two inputs A and B are given to XOR gate For Carry, The two inputs A and B are given to AND gate

Correct Answer: Pass input to XOR and give their outputs to OR gate, if your output is 0 both 8-bit signals are same OR Pass input to XNOR and give their outputs to AND gate, if your output is 1 both 8-bit signals are same