= KEY CONCEPTS =
===Why Study Data Representation?===
<table align="right"><tr valign="top"><td>[[Image:binary-number1.png|thumb|right|220px|A series of Digital computers are '''binary numberselectronic devices''' form that contain a series of �'''bytecircuits''' to represent '''numbers'''.<br>(Image licensed under [https:and voltage levels that can store //creativecommons.org/licenses/by-sa/3.0/ cc])]]</td><td>[[Image:binary-number-2.png|thumb|right|200px|'''Bytes''' can be used to also represent '''characters'''data. It is job of a program to know if bytes are used to represent �'''Binary numbers''' or '''characters'''. Learning to convert numbering systems<br>(like '''Hexadecimal to Binary''') can be used to know how a character is represented in '''binary'''. <br>(Image licensed under [https://creativecommons.org/licenses/by-sa/3.0/ cc])]]</td></tr></table><i>''Data ... is any sequence of one or more symbols given meaning by specific act(s) represent those series of interpretationcircuits with voltage levels. Digital data is data that is represented using the �Those binary number system of ones (1) and zeros (0)...''</i><br>Reference: https://en.wikipedia.org/wiki/Data_(computing)<br><br> Binary numbers are combined in a sequence to form a '''byte'''a byte. Bytes �Bytes are used to represent '''numbers''' or '''characters'''. How does the computer know which bytes represent a number or a letter? That is the job of '''computer programs''' that are created (including operating systems and application software) to perform that taskrepresent numbers or characters.
