9608 Study guides, Revision notes & Summaries

AS & A Level Computer Science 9608 REVISION NOTES

CIE A Level CS 9608 QUESTIONS & ANSWERS

Computer Science A-Level 2015 May - June 9608/11

A Level 9618 Computer Science Programming Summary for Paper 4 A* guaranteed

bit binary digit Binary Base-2 counting system Hexadecimal Base-16 counting system Nibble 4 bits BCD Binary Coded Decimal BCD Used in...? Calculator, cash register, time displays ASCII American Standard Code for Information Interchange 7-bits Number of bits to encode a character in ASCII

1.1 Number Representation What are binaries?o Values stored as a series of ones and zeroes o A single 0 or 1 is called a binary digit or bit. o Any group of 0s & 1s can represent a character 4 2 1 0 0 0 0 0 0 0 0 o E.g. 65 in binary is 1000001 1.1 Number Representation What are BCD Representation?o Each digit in the number is written separately in a series of 4 bits o E.g. 398 in BCD o 3 = 0011 9 = 1001 8 = 1000 o 398 = o Use of BCD: used in business applications (arithmetic) whe...

CIE A Level Computer Science 9608 - Paper 4

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Compilation of Past Papers for Computer Science 9618 for paper 3 from 2019 to 2022. Both 9618 and 9608 Past Papers

Compilation of Past Papers for Computer Science 9618 for Paper 4 from 2019 to 2022. Both 9618 and 9608 Past Papers