KS3 Programming basics Input and output Programming is writing computer code to create a program, in order to solve a problem. To program a computer, you need to know how programs are constructed.

The computing literature often draws a sharp distinction between input and output; computer scientists are used to regarding a screen as a passive output device and a mouse as a pure input device.

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Want to know more about standard Java I/O concepts like standard input, standard output, and standard error? Read on!