X representing datum leads to a hash representing data through an arrow representing collection. Data in turn leads to an exclamation representing information through an arrow representing process. Three double headed arrows connect desktop, laptop, and tablet representing clients on one side and a server on the other side.
Generation, period, input, key technology, and output are the column heads of the table. The row entries are as follows: First; 1940 to 1956; Punched cards and paper tape; Vacuum tubes and Thermionic valves; and Printouts. Second; 1956 to 1963; Punched cards; Transistors; and Printouts. Third; 1964 to 1971; Keyboards; Integrated circuits and Operating systems; and Monitors. Fourth; 1971 to 2010; Keyboards, Mouse, ...
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