Rajiv Gandhi Proudyogiki Vishwavidyalaya 2006 B.E Electronics & Tele-Communication Engineering - Question Paper

Dec 2006
1. Draw and explain the internal block diagram of 8086. discuss the concept of segmental memory. elaborate its advantages ?

2. (a) what is the advantages of DMA controlled data transfer over interrupt driven or program controlled data transfer ? why DMA controlled data transfer are faster?
(b) explain the subsequent modes of DMA transfer :
(i) memory to memory transfer
(ii) demand transfer mode
(iii) block transfer mode

3. (a) discuss the internal architecture of 8255. discuss the function of every block.
(b) write a control word for configuring 8255 port A as input port , port B as output port and port Cn as input and port CL as output port .

4. what is the difference ranging from 8253 and 8254 Programmable Interval Timer? List the different mode of 8253. discuss any 2 modes with wave form of WR, OUT and gate signal.

5. (a) draw the pin diagram of micro controller 8051. discuss the function of the subsequent pins:
(i) Reset
(ii)T0
(iii)T1
(iv) RXD
(v) TXD
(b) elaborate the various addressing modes of 8051 ? discuss every with instruction .

6. (a) Draw the 8259 A block diagram and explain the function of every block.
(b) discuss how to serve 64 interrupts using 8259 chips, Draw the necessary diagram.

7. Draw and explain the Pentium CPU architecture and super scalar organization.

8. Write short notes on any 3 of the subsequent :
(a) stepper motors
(b) Use of RS232C
(c) Memory interfacing
(d) kinds of A/D converter
(e) Comparison of advance processors

Earning:   Approval pending.