Learn How to Repair Computers
About data
Our PC's are data processors. PC's function is simple: to process data, and the processing is done electronically inside
the CPU and between the other components. That sounds simple, but what are data, and how are they processed
electronically in a PC? That is the subject of these pages.
Analog data
The signals, which we send each other to communicate, are data. Our daily data have many forms: sound, letters,
numbers, and other characters (handwritten or printed), photos, graphics, film. All these data are in their nature analog,
which means that they are varied in their type. In this form, they are unusable in a PC. The PC can only process
concise, simple data formats. Such data can be processed very effectively.
Digital data
The PC is an electric unit. Therefore, it can only deal with data, which are associated with electricity. That is
accomplished using electric switches, which are either off or on. You can compare with regular household switches. If
the switch if off, the PC reads numeral 0. If it is on, it is read as numeral one.
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