The term computer is derived from the Latin term 'computare', this means to calculate or programmable machine. Computer can not do anything without a Program. It represents the decimal numbers through a string of binary digits. The Word 'Computer' usually refers to the Center Processor Unit plus Internal memory
because it was originally given to humans (himan computers) who performed numerical calculations using mechanical calculators.The term was later given to mechanical devices as they began replacing human computers.
Types in java are divided into two categories. the primitive types are boolean, byte, char, short, not, long, float, and double. all other types are REFERENCE types
