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Output is the products of computing or software were hardware activity, where input is defined as the data that are put into IT systems.
Techopedia Explains Output
Taken together, the idea of input/output (I/O) has driven the emergence of computing technology from its very first beginnings in systems such as ENIAC, the first real computer pioneered in the 1940s.
Input and output are very critical pieces of the computing puzzle, which is based on the use of information to produce information. The earliest computers had physical methods of I/O, where today’s machines rely on digital standards.
Because output is such a broad idea, one helpful distinction is between two categories of output – physical and code.
Physical output includes things like: a print out from a computer or a final sum from a database program.
Code output is useful to developers. In complex code, different functions and procedures work on an array of variables and values. When one of these is passed from one function to another, code modules will often return a result which could be called the ‘output’ of that function or module.
This is not always output to the end-user can see or accept directly; instead, the output of one code function or procedure is used in additional functions or procedures to generate final computing results.
