Rajiv Gandhi Proudyogiki Vishwavidyalaya 2007 B.E Electronics & Tele-Communication Engineering - Question Paper

Dec 2007
1. (a)Compare the architecture features of INTEL 8086 and Motorola 68000 processor.
(b) write 8086 assembly language program to performs the subsequent :
(1) subtract 2 32 bit numbers
(2) Multiplication of 2 16 bit unsigned numbers.

2. (a)Discuss the block diagram of 81ff and mention the salient features of 8155. Compare 8155 and 8255.
(b) elaborate the various kinds of A/D converters ? explain any 1 .

3. Explain the RS232C serial I/O standard. elaborate the various signal needed for data transmission using handshaking, Mention the function of every signal.

4. Explain the various addressing modes of 8051 microcontroller. discuss the subsequent instruction with operators after execution :
ANL A, adder
MOV C,b
MOV DPTR, # 0170 H
MOV A, @ R0
CPL A

5. (a)Explain the function of the subsequent in 8259 with neat block diagram :
(1) In service Register
(2) Priority resolver
(3) Interrupt mask register
(4) Cascade buffer / comparator
(b) how do you extend 64 interrupts in 8259 using cascade mode? Draw the diagram in support of the ans.

6. (a)Interface 2 8K RAM chips and 2 4K E PROM chips with 8088 so to form a completely working system configuration
(b) explain the stepper motor interface with microprocessor.

7. (a)Discuss 8251 Internal Architecture with block diagram.
(b)what are the different operating modes of 8251? explain any 1 with transmit and receive formats.

8. Write the short notes on any 4 of the followings :
(a) Superscale Architecture of Pentium
(b) Risc and Cisc processor
(c) Application of 8253
(d) USRAT
(e) DAC

Earning:   Approval pending.