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ICSE Specimen 2011 Computer Science

4 pages, 26 questions, 5 questions with responses, 6 total responses,

ICSE
Indian Certificate of Secondary Education (ICSE), New Delhi

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COMPUTER SCIENCE (Two Hours) Answers to this Paper must be written on the paper provided separately. You will not be allowed to write during the first 15 minutes. This time is to be spent in reading the question paper. The time given at the head of this Paper is the time allowed for writing the answers. This Paper is divided into two Sections, Sections A and B. Attempt all questions from Section A and any four questions from Section B. The intended marks for questions or parts of questions are given in brackets [ ]. SECTION A (20 Marks) Attempt all questions. Question 1 (a) Name universal gates. (ii) (b) (i) State one advantage of batch processing. (i) Represent the given Boolean function through a logic circuit [2] diagram: F (X,Y, Z) = X . (Y Z + Y Z) (ii) (e) Name the high level language which was developed by IBM. Convert the number (1288)10 into an octal number, (i) Convert (101110)2 into a Hexadecimal number. (ii) (d) (i) (ii) (c) What is the Boolean expression for X Y? Multiply 1001011 by 1101. [2] [2] [2] Differentiate between Logical error and Execution error. [2] Question 2 (a) Write an algorithm to find the sum of two numbers. [2] (b) Name two conditional statements and explain. [2] (c) Explain any two looping statements. [2] 88 ICSE Specimen Question Paper (d) Write the full form of the following: (i) (ii) (e) ASCII COBOL [2] How does a data file different from a program file? [2] SECTION B (60 Marks) Attempt any four questions from this Section. Each program should be written in such a way that it clearly depicts the logic of the problem. This should be achieved by using Mnemonic Names and Comments in the program. Students have the option of using BASIC or C++ for solving the given problems. Question 3 Write a program in BASIC or C++ to calculate the interest and total amount to be paid by entering the amount of loan and the number of years, either by simple interest method or by compound interest method, as per the choice of user. For Simple Interest, Interest = (Amount * Rate * Number of Years) / 100 and Total amount = Amount + Interest For Compound Interest, No.of years Rate Total amount = Amount 1 + 100 Interest = Total amount Amount. [15] Question 4 Write a program in BASIC or C++ for the following: (a) Input any word in lower case and display its output in uppercase. (b) Total number of alphabets present in the word input. For example, if Lower case : snowy Upper case: SNOWY Total number of alphabets : 5. [15] 89 ICSE Specimen Question Paper Question 5 Write a program to store elements in an array of size 4 4 and perform the following. Find the sum of: (a) each row and display (b) each column and display (c) all the elements of the array. [15] Question 6 Using BASIC or C++ program, read N numbers in a single dimensional array and calculate the highest and the least number along with their corresponding positions. For example, if INPUT : 8, 4, 5, 1, 7 OUTPUT, Highest : 8 Position : 1 Lowest : 1 Position : 4 [15] Question 7 A cricket team has the following table of batting figures for a series of test matches for N number of players. Player s Name Runs Scored Innings Sachin 982 11 Times Not-out 2 Dhoni 779 14 3 Robin 775 14 1 -- -- -- -- -- -- -- -- -- -- -- -- Write a program in BASIC or C++ to create a sequential file named AVG.DAT and do the following: (a) Store the given data. 90 ICSE Specimen Question Paper (b) Read the figures to calculate and display the batting average of each player. Also, print the above format. [15] Question 8 (a) Develop a program using user-defined function to convert a temperature from Fahrenheit scale Celsius scale using the formula C = (5/9) * (F 32). (b) Write a program in BASIC or C++ using FOR Loop to print any number in reverse order. Hint : Number entered : 1 2 3 4 5 Reverse order : 54321 91 [15] ICSE Specimen Question Paper

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Additional Info : ICSE Board Specimen Question Paper 2011 Computer Science
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