![]() Or maybe an abbreviation for Input/Output. They could have been the letters "IO", a moon of Jupiter. If we see a line and a circle (like this: |O) we may interpret it to mean "ten".īut we assumed the marks referred to a number. There is no inherent meaning in these marks. Data has no inherent meaning and must be interpreted by whoever is reading it.ĭata is like human writing, which is simply marks on paper. Data is a physical concept, a raw sequence of bits and bytes stored on a computer. these representations all point to the same concept of "ten".Ĭontrast this with data. The idea of "ten" doesn't change, no matter what representation you use: ten, 10, diez (Spanish), ju (Japanese), 1010 (binary), X (Roman numeral). The most important concept is to recognize the difference between a number and the data that represents it.Ī number is an abstract concept, such as a count of something. ![]() ![]() If the header appears backwards, it means data was stored in the other format and needs to be converted.
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