DipIETE – ET (OLD SCHEME)
Code: DE10 Subject:
COMPUTER ENGINEERING
Time: 3 Hours
Max. Marks: 100
NOTE: There are 9 Questions in all.
· Question 1 is compulsory
and carries 20 marks. Answer to Q.1 must be written in the space provided for
it in the answer book supplied and nowhere else.
· Out of the
remaining EIGHT Questions, answer any FIVE Questions. Each question carries 16
marks.
· Any required data
not explicitly given, may be suitably assumed and stated.
Q.1 Choose the correct or the best alternative in the following: (2
10)
a. When an USART 8251 has to transmit data, then
___________.
(A) DTR is low (B) DTR is high
(C) RTS is low (D)
RTS is high
b. Multiprocessing
____________.
(A) makes the OS simpler
(B) allows multiple processes to run simultaneously
(C) is completely understood by all major computer vendors
(D) allows the same computer to have multiple processors
c. Assembly language program is written
using ____________.
(A) Octal Digit
(B) Mnemonic Codes
(C) Binary codes.
(D) Memory address and
hexadecimal code
d. Read and Write capabilities are
available in ______________.
(A) RAM (B) ROM
(C)
both RAM and ROM (D) neither RAM nor ROM
e. The refreshing rate of dynamic RAM is
in the range of _____________.
(A) 2 micro-seconds (B)
2 milli-seconds
(C) 50 milli-seconds (D)
500 milli-seconds
f. Operating System is a _______________.
(A) System Hardware (B)
Processor
(C) System Software (D) Application Software
g. How many number of devices that can be
connected when 8259 are cascaded?
(A) 8 (B) 64
(C) 16 . (D) 32
h. Which of the following memory is based
on the concept of ‘locality of reference’?
(A) Cache . (B) Associative.
(C) Virtual. (D) Main
Memory.
i. When several computations are
performed concurrently in a computer it
is known as _____________?
(A) Pipelined Computers (B) Array Processors
(C) Multiprocessor Systems (D)
Parallel Processing
j. During the execution of an
instruction, the instruction register holds the _______ instruction.
(A) previous (B)
next
(C) current (D)
all of the above
Answer any FIVE
Questions out of EIGHT Questions.
Each question
carries 16 marks.
Q.2 a. Distinguish
between: (8)
(i) Control Flow and Dataflow.
(ii) Multi user and Multitasking System.
b. What
do you understand by pipelining? How is it achieved in Intel 8086? (8)
Q.3 a. Explain
the functions of a program counter, a stack pointer and index register in a
microprocessor. (8)
b. Draw and explain
the timing diagram for opcode fetch cycle for Intel 8085. (8)
Q.4 a Write down the function of following pins
of 8085.
(i) Ready (ii) HOLD
(iii) IO/M (iv) CLK
(8)
b. What
are Static and Dynamic RAMs? Explain their merits, demerits and area of applications. (8)
Q.5 a. What
is Disk Controller? Explain the
functions of disk controller. (8)
b. What
are line printer? Explain the different types of line printers. (8)
Q.6 a. What
is an USART or an UART? What is the function of a modem? (8)
What are DCE and DTE ?
b. What
do you understand by stack and stacktop? Explain how the data is pushed to the
stack or popped from the stack? What is stack pointer? (8)
Q.7 a. Compare
the merits and demerits of assembly languages and high level languages. (8)
b. What
is ISA? Explain with an example. (8)
Q.8 a. What
is static and dynamic interconnection? (4)
b. Name
the 3 IC’s included in an EISA chipset. Explain about them in brief. (8)
c. Find
the errors, if any (4)
(i) MVI A,B
(ii) INR B,02
(iii)
ADD B,C
(iv) RAL, 02
Q.9 a. What
are the ratings used for : TPS, KLIPS? (4)
b. Write
short notes on the application of computers in medical field. (4)
c. Write
short notes on: (8)
(i) MACRO
(ii)
Utility Programs
(iii) PowerPC Processor
(iv) Keyboard