Labels:book | chat room | hakham | sky OCR: COMPUTERS AND DIGITAL BASICS Digital devices are electronic and so you can envision data flowing within these devices as pulses of light. In reality digital signals are represented by two different voltages, such as +5 volts and 0 volts. They can also be repre- sented by two different tones as they flow over phone line Digital data can also take the form of f light and dark spots etched onto the surface of a CD or the positive and negative orientation magnetic particles on the surface of hard disk. Regardless of the technology, however, digital data is always represented by two states denoted as0 and The 0s and 1s used to represent digital data are referred to as binary digits. It is from this term that we get the word bit- -binary digit. bit is a0or used in the digital representation Q da ...
