General Idea - D/A Converters

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Digital Value - D

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The values shown as number such as 0, 1, 2 and 3, and varied non-continuously are called digital values. ON signal and OFF signal are shown as the digital value of 0 and 1. BCD values and binary values are also digital values.

To operate in digital value, analog values cannot be inputted directly to a CPU module.
Therefore, analog value is to be converted to digital value like Picture 1.4, being inputted to a CPU.
To output analog values, it is necessary to convert the digital values in a CPU to analog values.