Fundamental of Computing

          Digital Representation ASCII is a computer language for text that became the standard for transmitting information between computers. Moreover, it translates alphanumeric characters and symbols into computer readable code. ASCII is 7-bit characters code consisting  value from 0 - 7F16 whereas Unicode consists value from 0 - 10FFFF16 Sound is captured by microphone and it is converted into a digital signal usually in the form of binary number. Incase of image, it is broken down into individuals pixels.                             Number system   A number can be represent in a computer system by a string of bits (binary number) Binary number system (base 2) Octal number system (base 8) decimal number system (base 10) Hexadecimal number system(base 16). it uses 16 symbols: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E and F.                               N bits in binary number (2^n-1). e.g. of 3 bits: 2^3-1 = 8-1 = 7 In case of hexadecimal number  representation, each group of 4