Image copyright AFP/Getty. Image caption Bill Gates has been named the world's richest person for 16 of the last 20 years. Bill Gates has been declared the richest man in the world for the 16th time by Forbes magazine's annual ranking of global billionaires. The Microsoft founder once again beat Mexican businessman Carlos Slim to the top spot. Mr Gates' net worth rose by just over $3bn (Â£1.94bn) in the year to 13 February, to $79bn.
Machine language is the basic low-level programming language designed to be recognized by a computer. Actually the language is written in a binary code of 0s and 1s that represent electric impulses or off and on electrical states respectively.
1GL or first-generation language was (and still is) machine language or the level of instructions and data that the processor is actually given to work on (which in conventional computers is a string of 0s and 1s). 2GL or second-generation language is assembler (sometimes called assembly) language. An assembler converts the assembler language statements into machine language. 3GL or third-generation language is a high-level programming language, such as PL/I, C, or Java. A compiler converts the statements of a specific high-level programming language into machine language.