This is a Question Papers of Mumbai University for B.Sc.IT Student of Semester - I [Digital Computer Fundamental] (Old Course). [Year - April / 2014] . . .Solution Set of this Paper is Coming soon..

1. D i g i t a l C o m p u t e r F u n d a m e n t a l
Q u e s t i o n P a p e r ( A p r i l – 2 0 1 4 ) [ O l d C o u r s e ]
1 | Page
M u m b a i B . S c . I T S t u d y
F a c e b o o k | T w i t t e r | I n s t a g r a m | G o o g l e + | Y o u T u b e
– Kamal T.
Time: 3 Hours Total Marks: 100
N.B.: (1) Questions No. 1 is Compulsory.
(2) Attempt any four questions from remaining.
Q.1 Attempt the following Question: (20 Marks)
(A) Explain Flag Register in 8085. (6)
(B) Explain PCI Arbitration. (6)
(C) Explain RAID with its various level. (8)
Q.2 Attempt the following Question: (20 Marks)
(A) Explain Data Bus, Address Bus and Control Bus in case of 8085 microprocessor? (6)
(B) Write an Assembly Language Program top add two 8 bit numbers stored at memory
location 2000 H and 2001 H.
(6)
(C) Write a short note on:
(i) Stack Memory
(ii) Subroutine.
(8)
Q.3 Attempt the following Question: (20 Marks)
(A) What do you mean by externally initiated operators with respect to a Microprocessor? (6)
(B) Explain different Addressing Modes in 8085 Microprocessor. Give two examples of
each Addressing Mode.
(6)
(C) Explain structure and function of Modern Day Computer System. (8)
Q.4 Attempt the following Question: (20 Marks)
(A) Write a short note on interrupt. (6)
(B) Explain the structure of Cache Memory. (6)
(C) What is instruction Pipelining? (8)
Q.5 Attempt the following Question: (20 Marks)
(A) Explain Major Functions of an I/O Module. (6)
(B) Explain the programmed I/O Module and interrupt driven I/O Module. (6)
(C) With the help of a Block Diagram explain DMA. (8)

2. D i g i t a l C o m p u t e r F u n d a m e n t a l
Q u e s t i o n P a p e r ( A p r i l – 2 0 1 4 ) [ O l d C o u r s e ]
2 | Page
M u m b a i B . S c . I T S t u d y
F a c e b o o k | T w i t t e r | I n s t a g r a m | G o o g l e + | Y o u T u b e
– Kamal T.
Q.6 Attempt the following Question: (20 Marks)
(A) What is an Operating System? (6)
(B) Explain following terms in Operating System:
(i) Multiprogramming
(ii) Time Sharing.
(6)
(C) Write a short note on Real Time Operating Systems. (8)
Q.7 Attempt the following Question: (20 Marks)
(A) Write a Assembly Language Program to find smallest number in given block stored
from memory location 2000 H to 2004 H.
(6)
(B) Explain following instructions in 8085:
(i) 2050
(ii) PUSH B
(iii) INR M.
(6)
(C) Explain Programming Model of 8085 Microprocessor (8)