What a computer is, its basic characteristics, and the fundamental Input-Process-Output cycle every other chapter builds on.
A computer is an electronic device that accepts data (input), processes it according to a set of instructions, and produces meaningful results (output).
| Characteristic | Meaning |
|---|---|
| Speed | Performs calculations in microseconds/nanoseconds |
| Accuracy | Produces error-free results (errors usually stem from wrong input or programs, not the machine) |
| Storage | Can store huge amounts of data permanently or temporarily |
| Diligence | Never gets tired; performs repetitive tasks without loss of accuracy |
| Versatility | Can perform a wide variety of tasks — calculations, graphics, communication |
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