A03: Digital Representation
ASCII (American Standard Code for Information Interchange) 7-bit character code values: 0-127 Representing Sound For the computer to process the sound, it needs to be converted into binary. Convert the captured sound unto digital signal using microphone. Representing Number In a computer system numbers are represented by a string of bits called Binary Number. Number System 1 . Decimal (Base 10) Number system 10 symbols: 0-9 Uses positional notational 2. Binary (Base 2) Number system Binary number system has two symbols: 0 and 1, thus the base used is 2 Decimal to binary: Divide the number repeatedly by 2 until we get '0' as the quotient and remainders are written in reverse. Example: (23) 10 = () 2 23/2=11 r:1 11/2=5 r:1 Read from below 5/2=2 r:1 ...