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ICSE Specimen 2013 Computer Science

4 pages, 26 questions, 5 questions with responses, 6 total responses,    0    0
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

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