TJ TechGuide

Decimal number system - base 10 deci -> 1/10 0 1 2 3 4 5 6 7 8 9   Binary number system - base 2 0 1 0 --> off            1--> on Octal number system - base 8 Octagon 0 1 2 3 4 5 6 7  Hexadecimal number system - base 16 Hexagon hexa + decimal = 6 + 10 =========================================================================                                Convert Number Systems ========================================================================= 1) Decimal -> Binary 2) Decimal -> Octal 3) Decimal -> Hexadecimal 4) Binary -> Decimal 5) Binary -> Octal 6) Binary -> Hexadecimal 7) Octal -> Decimal 8) Octal -> Binary 9) Octal -> Hexadecimal 10) Hexadecimal -> Decimal 11) Hexadecimal -> Binary 12) Hexadecimal -> Octal -------------------------------------------------------------------------------------------------------------...

Data Types Data types can mainly be divided into two types. They are primitive and non-primitive data types. Here are more details about primitive data types. boolean - It is a binary variable that can have two possible values.  Size= 1 bit.    Ex: - True(1) or False(0) char        - It is a character data type.  Size= 2 bytes.                   Ex: - character, letter, ASCII value byte        - It is a numeric data type.  Size= 1 bytes. short      - It is a numeric data type.  Size= 2 bytes. int           - It is a numeric data type.  Size= 4 bytes. long        - It is a numeric data type.  Size= 8 bytes. float        - It is a fractional data type.  Size= 4 bytes. double     - It is a fractional   data type....