HSC Science (Computer Science) 12th Board ExamMaharashtra State Board
Account
It's free!

User


Login
Register


      Forgot password?
Share
Notifications

View all notifications
Books Shortlist
Your shortlist is empty

Question Paper Solutions - Computer Science 2 2014 - 2015 HSC Science (Computer Science) 12th Board Exam

SubjectComputer Science 2
Year2014 - 2015 (March)

Marks: 50
[10]1
[4]1.1 | Select correct options and rewrite the following
[1]1.1.1

______Instruction would not affect Zero Flag.

(i) XRA A

(ii) SUB A

(iii) CMPA

(iv) MVI A, 00H

Chapter: [2] Instruction Set and Programming of 8085
Concept: Instruction Set and Programming of 8085
[1]1.1.2

Data bus of 80286 MPU is of size_____

(i) 8 bit

(ii) 16 bit

(iii) 32 bit

(iv) 64 bit

Chapter: [3] Introdcution to Inted X-86 Family
Concept: Introdcution to Intel X-86 Family
[1]1.1.3

_____is used to store 8 bit opcode in 8085.

(i) IR

(ii) PC

(iii) SP

(iv) Accumulator

Chapter: [1] Introduction to Microprocessors and Organization of 8085
Concept: Introduction to Microprocessors and Organization of 8085
[1]1.1.4

The device used to extend cable length of a network is______.

(i) MODEM

(ii) REPEATER

(iii) HUB

(iv) ROUTER

Chapter: [5] Networking Technology
Concept: Networking Technology
[6]1.2 | Solve any two of the following
[3]1.2.1

Draw block diagram of Generic Microprocessor.

Chapter: [1] Introduction to Microprocessors and Organization of 8085
Concept: Introduction to Microprocessors and Organization of 8085
[3]1.2.2

State any six features of 8051 Microcontroller.

Chapter: [4] Introduction to Microcontroller
Concept: Introduction to Microcontroller
[3]1.2.3

What is HUB ? Explain all the types of HUB.

Chapter: [5] Networking Technology
Concept: Networking Technology
[10]2
[6]2.1 | Solve any two of the following
[3]2.1.1

Explain Multiplexed Address and Data Bus of 8085 MPU.

Chapter: [1] Introduction to Microprocessors and Organization of 8085
Concept: Introduction to Microprocessors and Organization of 8085
[3]2.1.2

Explain in short Bus Topology

Chapter: [5] Networking Technology
Concept: Networking Technology

Explain in short Star Topology

Chapter: [5] Networking Technology
Concept: Networking Technology
[3]2.1.3

State any six Arithmetical and Logical Instructions of 8085 MPU.

Chapter: [2] Instruction Set and Programming of 8085
Concept: Instruction Set and Programming of 8085
[4]2.2 | Solve any one of the following
[4]2.2.1

State the different hardware interrupts with their priorities and branching addresses.

Chapter: [1] Introduction to Microprocessors and Organization of 8085
Concept: Introduction to Microprocessors and Organization of 8085
[4]2.2.2
[1]2.2.2.1

Explain the following instructions of 8085 MPU: MOV B, M

Chapter: [2] Instruction Set and Programming of 8085
Concept: Instruction Set and Programming of 8085
[1]2.2.2.2

Explain the following instructions of 8085 MPU : ADC C

Chapter: [2] Instruction Set and Programming of 8085
Concept: Instruction Set and Programming of 8085
[1]2.2.2.3

Explain the following instructions of 8085 MPU : SPHL

Chapter: [2] Instruction Set and Programming of 8085
Concept: Instruction Set and Programming of 8085
[1]2.2.2.4

Explain the following instructions of 8085 MPU : XCHG

Chapter: [2] Instruction Set and Programming of 8085
Concept: Instruction Set and Programming of 8085
[6]3
[6]3.1 | Solve any two of the following
[3]3.1.1

What is a Single Chip Computer ? State its advantages

Chapter: [4] Introduction to Microcontroller
Concept: Introduction to Microcontroller
[3]3.1.2

Explain the advantages of following features of Pentium Processor
(i) Dual - Pipelining
(ii) Pre fetching
(iii) Branch Prediction
(iv) Internal Data Bus

Chapter: [3] Introdcution to Inted X-86 Family
Concept: Introdcution to Intel X-86 Family
[3]3.1.3

Write a note on Ethernet.

Chapter: [5] Networking Technology
Concept: Networking Technology
[4]3.2 | Solve any one of the following
[4]3.2.1

Explain PUSH and POP Instructions of 8085

Chapter: [2] Instruction Set and Programming of 8085
Concept: Instruction Set and Programming of 8085
[4]3.2.2

Explain any four flags of 8085, giving example

Chapter: [1] Introduction to Microprocessors and Organization of 8085
Concept: Introduction to Microprocessors and Organization of 8085
[6]4
[6]4.1 | Solve any two of the followig
[3]4.1.1
[1]4.1.1.1

Explain function of the following pins of 8085

`bar(INTA)`

Chapter: [1] Introduction to Microprocessors and Organization of 8085
Concept: Introduction to Microprocessors and Organization of 8085
[1]4.1.1.2
 

Explain function of the following pins of 8085

`IO"/"barM`

 
Chapter: [1] Introduction to Microprocessors and Organization of 8085
Concept: Introduction to Microprocessors and Organization of 8085
[1]4.1.1.3
 

Explain function of the following pins of 8085 RD

 
Chapter: [1] Introduction to Microprocessors and Organization of 8085
Concept: Introduction to Microprocessors and Organization of 8085
[3]4.1.2

State any six applications of Microcontrollers

Chapter: [4] Introduction to Microcontroller
Concept: Introduction to Microcontroller
[3]4.1.3

Compare Twisted Pair Cable and Coaxial Cable

Chapter: [5] Networking Technology
Concept: Networking Technology
[4]4.2 | Solve any one of the following
[4]4.2.1
[1]4.2.1.1

Explain the following

T-States

Chapter: [2] Instruction Set and Programming of 8085
Concept: Instruction Set and Programming of 8085
[1]4.2.1.2

Explain the following

Machine Cycle

Chapter: [2] Instruction Set and Programming of 8085
Concept: Instruction Set and Programming of 8085
[1]4.2.1.3

Explain the following : Instruction Cycle

Chapter: [2] Instruction Set and Programming of 8085
Concept: Instruction Set and Programming of 8085
[1]4.2.1.4

Explain the following : FETCH Cycle

Chapter: [2] Instruction Set and Programming of 8085
Concept: Instruction Set and Programming of 8085
[4]4.2.2

Give advantages of Fiber Optic Cable over an Electrical Cable

Chapter: [5] Networking Technology
Concept: Networking Technology
[10]5 | Attempt any One
[10]5.1 | Answer any two of the following
[5]5.1.1

Write ALP to multiply number stored at 8085H by 09H and store result at 8086H and 8087H, with lower byte at 8086H.

Chapter: [1] Introduction to Microprocessors and Organization of 8085
Concept: Introduction to Microprocessors and Organization of 8085
[5]5.1.2

Write ALP to find 2's complement of a 16 bit number stored in DE Pair. Store result in HL Pair.

Chapter: [2] Instruction Set and Programming of 8085
Concept: Instruction Set and Programming of 8085
[5]5.1.3

Locate smallest number in a block from 2050H to 2060H and store it in memory location 2061H

Chapter: [2] Instruction Set and Programming of 8085
Concept: Instruction Set and Programming of 8085
[10]5.2 | Solve any two of the following
[5]5.2.1

Write ALP to store data BCH in 20 contiguous memory locations starting from 8081 H.

Chapter: [2] Instruction Set and Programming of 8085
Concept: Instruction Set and Programming of 8085
[5]5.2.2

Write ALP to divide number at 6068H by a non-zero number at 6067H. Store quotient at 6069H and remainder at 606AH.

Chapter: [2] Instruction Set and Programming of 8085
Concept: Instruction Set and Programming of 8085
[5]5.2.3

Write ALP to clear Register ,B, if number at memory location 20F9H is Palindrome; otherwise store FFH in Register B.

[Palindrome No. Ex. FF, 22, AA]

Chapter: [2] Instruction Set and Programming of 8085
Concept: Instruction Set and Programming of 8085
S