Number Systems Chapter Page - - Table . Memory Size (Read ^ as power ) Name Abbr. Size Kilo K ^ = , Mega M ^ = , , Giga G ^ = , , , Tera T ^ = , , , , Peta P ^ = , , , , , Exa E ^ = , , , , , , Zetta Z ^ = , , , , , , , Yotta Y ^ = , , , , , , , , Bytes are used to represent characters in a text. Different types of coding schemes are used to represent the character set and numbers.
The most commonly used coding scheme is the American Standard Code for Information Interchange (ASCII). Each binary value between and is used to represent a specific character. The ASCII value for (blank space) is and the ASCII value of numeric is . The range of ASCII values for lower case alphabets is from to and the range of ASCII values for the upper case alphabets is to .
The speed of a computer depends on the number of bits it can process at once. For example, a - bit computer can process -bit numbers in one operation, while a -bit computer break -bit numbers down into smaller pieces, making it slower.