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 best alternative in the following: (2x10)
a. 80486 is a
(A) 16-bit processor (B) 24-bit processor
(C) 32-bit processor (D) 64-bit processor
b. The two’s compliment of a number is 0100. The number in decimal system is_____________
(A) 11 (B) 12
(C) 10 (D) 16
c. In assembly language, a sequence of instructions to which a name is assigned is called
(A) sub routine (B) function
(C) macro (D) procedure
d. The addressing mode of 8085 instruction LXI H, 2500 H
(A) Immediate (B) Direct
(C) Register (D) Implied
e. A 5.25-inch optical disk can store about_____of data
(A) 720 MB (B) 1.3 GB
(C) 650 KB (D) 650 MB
f. __________is used to process cheques in banks
(A) OCR (B) MICR
(C) OMR (D) ATM
g. The memory that is to be refreshed many times per second is
(A) SRAM (B) DRAM
(C) EPROM (D) EAROM
h. The type of data transfer in which microprocessor does not participate is called
(A) Synchronous data transfer (B) Asynchronous data transfer
(C) Interrupt driven data transfer (D) DMA
i. When a computer is turned on, the operating system is brought in to its memory by
(A) Linker (B) Bootstrap loader
(C) Programme counter (D) BIOS
j. The printer which prints page at a time is
(A) Dot matrix printer (B) Thermal wax
(C) Laser printer (D) Inkjet printer
Answer any FIVE Questions out of EIGHT Questions.
Each question carries 16 marks.
Q.2 a. Name the types of memories and high level languages used in the second and third generation of computers. (4)
b. Show how instructions are executed in a pipelined processor and a non-pipelined processor. (8)
c. What are the following ratings used for : TPS, KLIPS (4)
Q.3 a. Explain about the register organization of Intel 8086. (8)
b. Draw and explain the timing diagram for I/O write cycle for Intel 8085. (8)
Q.4 a. Give the classification of different types of instructions based on the word length. Explain the three types with examples. (8)
b. Find the contents of the carry flag and accumulator after the execution of the following instructions:
STC
MVI A, 80 H
RLC (4)
c. Write an assembly language program to find out the 2’s complement of a number stored in the memory location 2000 H and place the result in the memory location 2001H. (4)
Q.5 a. A hard disk drive has 12 recording surfaces, 256 sectors per track, 5250 tracks per surface and 512 bytes per sector. What is the storing capacity? (4)
b. Explain how data is organized on a magnetic tape. (6)
c. What is a CDROM? How is data written and read from CDROM? What are the advantages of a CDROM? (1+3+2)
Q.6 a. Differentiate between
(i) Raster scan and Vector scan method of display.
(ii) Synchronous and Asynchronous data transfer schemes. (8)
b. What is a Programmable Interrupt Controller (PIC)? With the help of a schematic diagram explain the important signals available on the Intel 8259A chip. Show how a Programmable Interrupt Controller can be interfaced to a microprocessor. (8)
Q.7 a. What is a scanner? Name and explain the two types of scanners. (8)
b. Write a short note on Windows NT operating system. (4)
c. Give the advantages of high-level languages over low-level languages. (4)
Q.8 a. What is Debugging? Name and explain five important tools used to debug programs. (8)
b. What are the major functions of the UNIX kernel? (4)
c. Name and explain any four UNIX commands? (4)
Q.9 a. Write short notes on
(i) Accelerated Graphic Port (Bus) (4)
(ii) IEEE-1284 (4)
b. What are the disadvantages of an Industry Standard Architecture bus?
Explain about the EISA bus in brief. (2+6)