MyCERT 3rd Quarter 2011 Summary Report - CyberSAFE Malaysia

divided, it will remain as remainder. Refer theexample below for a better understandingon how division operation can be solved byusing a binary number system.100101101 10111010- 101110-101110-1011 (remainder)i) Binary ii) DecimalConclusion375 186-15136-351 (remainder)There are many ways to utilize the use ofbinary number systems as it can operatesimilar to decimal numbers. Not only inmathematical operations, is it also compatiblein other systems or applications due to itsflexible characteristics. Stated below are theother functions of a binary number systemthat are widely used in computer systems.This number system can be another optionfor users to do mathematical operationsinstead of using conventional mathematicalmethods. It can also be used as an element tocheck normal calculation methods especiallywhen dealing with very large numbers.Normal calculators may allow limited digitsfor mathematical operations. It cannotprocess more than a certain number of digits.Binary number systems can be used forvery large mathematical operations becausein a computer system, each binary digitrepresents a character instead of defining itas a number.Binary numbers may represent alphabeticalletters with its own unique code where it canbe found at the ASCII (American StandardCode for Information Interchange) Table.In this table, alphabet “A” is representedby the number 65 meanwhile alphabet “Z”is represented by the number 90. Thesealphabetical code numbers can also beconverted to binary numbers. In binary,alphabetical code for “A” is 1000001 andalphabetical code for “B” is 1011010.Besides using binary numbers to representalphabetical letters, it can also representcolours. Combinations of colours willproduce images or pictures. Each colourhas its unique colour code where this canbe found at a HTML Colour Codes Table. Inhexadecimal for instance, the colour blackis represented by 000000 meanwhile thecolour white is represented by FFFFFF. Thesecolour codes are numbers that also can beconverted to binary numbers. After these twocolour codes have been converted to binarynumbers, the colour black is representedby 000000000000000000000000and the colour white is represented by111111111111111111111111. ■References1. Ian H. (2002). ArithmeticOperations on Binary Numbershttp://www.doc.ic.ac.uk/~eedwards/compsys/arithmetic/index.html2. Christine R.W. and SamuelA. R. The Binary Systemhttp://www.math.grin.edu/~rebelsky/Courses/152/97F/Readings/student-binary3. Weisstein E.W. Binary Operationhttp://mathworld.wolfram.com/BinaryOperation.html4. Peter W. (1996). Noteson Binary Operationshttp://www.math.csusb.edu/notes/binop/binop.html31e-Security | Cyber Security Malaysia | Vol: 28-(Q3/2011)© CyberSecurity Malaysia 2011 - All Rights Reserved