Punjab Engineering College 2005 B.Tech Microprocessor & Its Application(EC - 307) - Question Paper

MICROPROCESSOR & ITS APPLICATION (EC - 307)
Maximum Marks: 60
Time: 03 Hours
Instruction to Candidates:
1) part -:- A is compulsory.
2) Attempt any 4 ques. from part - B.
3) Attempt any 2 ques. from part - C.

Q1)
(10 * two =20)
part - A
a)What is an addressing mode? What is the use of addressing mode techniques in the computer?
b)How many 128 x4 RAM chips are needed to give a'memory of 4096 bytes? How many address lines are needed to access 4096 bytes of memory? .
c)What are the characteristics of a Risc processor?
d)Write the boolean junction function to generate an overflow for two's complement arithmatic logic unit.
e)Distin'guish ranging from primary and secondary memory.
f)What is an interrupt?
g)List and differentiate any 2 kinds of interrupts.
h)Explain briefly DMA mode of data transfer.
Why is handshaking needed ranging from a CPU and I/O device?
i)What do you understand by instruction format?
j)List the function of ALU.

part - B
(5 * 4=20)
Q2) discuss SIM & RIM instructions of 8085.
Q3) If the stack pointer is initialized to seven FFF H and after pushing BC pair and DE .
pair on to stack, show the contents of stack assuming BC = 2233 Hand
DE = 4455 H.
Q4) Draw a block diagram of a control unit. ExplaiI1 its operation.
Q5) discuss string handling of 8086.
Q6) Draw and discuss the block diagram of 8086 microprocessor for maximum
mode of operation.

part - C
(10 *2=20)
Q7) discuss the different address modes of 8086 with examples. discuss how the
queue seeded up the process operation in 8086.
Q8) discuss the functional aspects of 8251 USARTchip with a neat block diagram. discuss how do you make use of 8251 to interface CRT data terminal to 8085 CPU.
Q9) Draw the block diagram of 8259 PIC. explain the advantages and.
disadvantages of Segmentation of memory in 8086

Earning:   Approval pending.