Maharashi Dayanand University (MDU) 2006-4th Sem B.E Computer Science Microprocessor -, C.S.E, E.C.E,& I (Re-evaluation ) - Question Paper

Max Marks : 100

Time : 2:30 Hrs

Attempt any five of out of 8.
every ques. Carry equal marks.


Q1. explain and Design microprocessor based traffic light system.


Q2. discuss the subsequent :-

(a) Pipelining in Microprocessor 8086
(b) Synchronous and Asynchronous bus
(c) Applications of 8251 Interface Chip
(d) DMA Transfer


Q3. (a) describe Stack, Stack Pointer and Program counter ? discuss with the help of 1 example ?
(b) Block diagram of 8086 microprocessor


Q4. (a) discuss 8085 interrupts
(b) Specify Memory Location and its content after the subsequent instructions are executed.

LDA 0
MVI B,8
MVI C,0
Loop: RLC
JNC skip
INR C
Skip: DCR B
JNZ Loop
MOV A,C
STA 1
HLT



Q5. (a) Write an assembly language program to get the 2’s complement of a 16-bit number.
(b) discuss briefly subsequent instructions : RIM, SIM, DI, EI, RST


Q6. discuss various Modes of 8254 Programmable Interval timer.


Q7. Write an assembly language program for Bubble Sorting. discuss every step with an example.


Q8. Draw Pin Diagram & Block Diagram of 8259A Programmable Interrupt Controller.

Earning:   Approval pending.