Indian Institute of Information Technology 2007 B.Tech Electronics Engineering MICROPROCESSOR & ITS APPLICATIONS - Question Paper

B.Tech Electronics & Communications Engineering MICROPROCESSOR & ITS APPLICATIONS ques. paper

B.Tech.(Sem-5th )

MICROPROCESSOR & ITS APPLICATIONS (EC-307)

Time:03 Hours Maximum Marks:60
Instructuions to Candidates:
1) Section-A is Compulsory.
2) Attempt any 4 ques. from part – B.
3) Attempt any 2 ques. from part –C.

part – A
Q1)
a) elaborate tri-state devices and why are they essential in bus-oriented system?
b) What is stack? elaborate its functions?
c) Specify the number of registers and memory cells in a 128x4 memory chip.
d) discuss the need to demultiplex the bus AD7-AD0 .
e) List the sequence of events that occurs when the 8085 MPU reads from the memory.
f) What is the difference ranging from the machine language and the assembly language of the 8085 microprocessor?
g) elaborate the functions of the instruction pointer and stack pointer in Intel 8086?
h) define the action associated with the RET instruction in 8085.
i) Differentiate ranging from synchronous and asynchronous data transfer.
j) What is the purpose of memory segmentation in Intel 8086?


part –B
Q2) Specify the handshake signals and their functions if port A of the 8255A is set up as an output port in mode 1.
Q3) Design a counter to count continously from 00H to FFH with 500ms delay ranging from every count. Display the count at PORT1 and PORT2 (one digit per port) with a common –anode seven-segment-LED code.
Q4) describe machine cycle and instruction cycle. Identify the machine cycles in the instruction IN02H and draw the timing diagram for the identical.
Q5) explain the different addressing modes of 8086. What is the effective address or offset?
Q6) elaborate vectored and non-vectored interrupts in 8085? Also discuss the function of the instructions RIM and SIM.
Section-C
Q7) Draw the block diagram architecture of Intel 8086 and discuss the function of every block.
Q8) D raw the block diagram architecture of the programmable interval timer and discuss its modes of operation.
Q9) Write short notes on:
(a) Interrupts in 8086.
(b) Dynamic debugging.

Earning:   Approval pending.