Analogue & Digital Data | IGCSE Information and Communication Technology Preparation - Year 11 PDF Download

Analogue & Digital Data

• Analog data exhibits continuity and smooth variation across time.
• Digital data, on the other hand, is discrete and expressed in binary format, comprising of 0s and 1s.

Differences between Analogue & Digital Data

• Analog data can encompass any value within a specified range, whereas digital data is confined to a finite set of values.
• Digital data tends to be less susceptible to noise and distortion in comparison to analog data.
• Manipulating, storing, and transmitting digital data is more straightforward for computers.

Converting Analogue to Digital Data

• Analog data necessitates conversion to digital format before it can be processed by a computer.
• This conversion process is known as analogue-to-digital conversion (ADC), and it is executed by a device called an analogue-to-digital converter.

Converting Digital to Analogue Data

• Digital data needs to be transformed into analog format for controlling devices.
• This conversion process is referred to as digital-to-analog conversion (DAC), and it is carried out by a device known as a digital-to-analog converter.