Kurukshetra University 2007 B.Tech Computer Science and Engineering microprocessor & interfacing - Question Paper

BT-4/J07
Microprocessor and Interfacing
Paper-ECE-216E
Time: 3 Hours] [Maximum Marks: 100
Note: - Attempt 5 questions, selecting at lowest 1 from every unit.
UNIT-1
1. (i) discuss subsequent 8085 signals:-
(S1S0), READY, SID, RST5..5.
(ii) Draw timing diagram for execution of instruction:
MVI A, 32 H.
(iii) List the steps 8085 will execute to process the instruction:
CALL 2075 H. 7, 7, 6
2. (i) Draw cell structures of RAM, ROM, DRAM, UVPROM.
(ii) Design decoding circuit to choose 64 K.B of memory divided into eight modules.
Use 74138 IC and mention address range for every module.
(iii) Differentiate ranging from Memory mapped I/O and Isolated I/O. 5, 10, 5
UNIT-II
3. (i) Draw block diagram of 8086 µP. discuss address and data registers and Queue.
(ii) discuss control flags of 8086. Write instructions to set/ reset them.
(iii) discuss the concept of memory segmentation. 10, 5, 5
4. (i) discuss subsequent assembler directives:
EXTRN, PUBLIC, PTR, presume.
(ii) discuss subsequent 8086 instructions:-
LOCK, ESC, TEST, LOOP.
(iii) Write PROC to multiply 2 64 bit numbers 6, 6, 8
UNIT –III
5. (i) discuss BSR and Bidirectional BUS mode of 8255.
(ii) Interface eight bit ADC with 8255. Use interrupts driven I/O to learn 10 samples.
Write ALP. 10,10
6. (i) What is successive approximation kind ADC ? discuss its principle and
Draw its block diagram.
(ii) Design successive approxi. kind ADC using eight bit DAC,8255 and 8085.
8,12
UNIT –IV
7. (i) Differentiate ranging from Interrupt and DMA.
(ii) discuss ICWs of 8259.
(iii) Interface temperature sensor LM35 with 8086 using 8259.
Write ALP to learn temperature. 4,8,8
8. Write short notes on the following:
(i) 8237 (ii) 8253. 10,10.

Earning:   Approval pending.