Computer language is a set of symbols in which operating instructions for a computer are written. Computer languages are also called programming languages.
Programs written in the most basic languages, called machine languages, instruct the computer directly. A computer operates by manipulating electric charges that represent the numbers 0 and 1. These charges, in turn, represent numbers, letters, other symbols, and pictures and sounds--all the data that the computer processes and all the programs used to process the data. Machine languages use only two symbols--the numerals 0 and 1. When these symbols are entered into a computer, electronic circuits translate them into charges representing 0's and 1's.

One level higher than machine languages are assembly languages. These languages use the numerals 0 through 9, the letters of the alphabet, and other symbols. A program called an assembler translates each command in an assembly language into a command in machine language.

The main drawback of assembly languages is that a separate program must be written for each type of computer. To avoid this drawback, most programs are written in high-level languages. A program called a compiler generally translates a high-level language into an assembly language for a specific type of computer and then translates the assembly language into machine language. An added advantage of high-level languages is that they more closely resemble ordinary written languages, such as English, than assembly languages do.

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HTH

It's a sneaky way to exclude the right to (use and/or modify) the source code!!!