Microprocessor

Question 31

Consider a N-bit plane frame buffer with W-bit wide lookup table with W > N. How many intensity levels are available at a time ?

• 2^N
• 2^W
• 2^N+W
• 2^N-1

Question 32

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

• 82H
• 78H
• 76H
• 47H

Question 33

IEEE 1394 is related to

• RS-232
• USB
• Firewire
• PCI

Question 34

8085 microprocessor has _____ hardware interrupts.

• 2
• 3
• 4
• 5

Question 35

Given the following statements: (A) Frequency Division Multiplexing is a technique that can be applied when the bandwidth of a link is greater than combined bandwidth of signals to be transmitted. (B) Wavelength Division Multiplexing (WDM) is an analog multiplexing Technique to combine optical signals. (C) WDM is a Digital Multiplexing Technique. (D) TDM is a Digital Multiplexing Technique. Which of the following is correct?

• (A), (B), (C) and (D) are true.
• (A), (B), (C) and (D) are false.
• (A), (B) and (D) are false; (C) is true.
• (A), (B) and (D) are True; (C) is false.

Question 36

In 8086, the jump condition for the instruction JNBE is?

• CF = 0 or ZF = 0
• ZF = 0 and SF = 1
• CF = 0 and ZF = 0
• CF = 0

Question 37

How many number of times the instruction sequence below will loop before coming out of the loop?

A1:  MOV AL, 00H
     INC AL
     JNZ A1 

• 1
• 255
• 256
• Will not come out of the loop

Question 38

In 8085 microprocessor, the ISR for handling trap interrupt is at which location?

• 3CH
• 34H
• 74H
• 24H

Question 39

What will be the hexadecimal value in the register ax (32-bit) after executing the following instructions? mov al, 15 mov ah, 15 xor al, al mov cl, 3 shr ax, cl Codes :

• 0F00 h
• 0F0F h
• 01E0 h
• FFFF h

Question 40

The three outputs x₁x₂x₃ from the 8 X 3 priority encoder are used to provide a vector address of the form 101x₁x₂x₃00. What is the second highest priority vector address in hexadecimal if the vector addresses are starting from the one with the highest priority ?

• BC
• A4
• BD
• AC