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Hello! If you have ever used something that produced sound through a speaker, than you have indirectly used a Digital-to-Analog Converter, or DAC for short. Many tutorials on how to use a DAC will cover how to use a R-2R resistor ladder which is one of the popular ways that DACs are constructed. However, not very many explain how you might use a DAC that is already created in a small IC chip, such as the one present on the PmodDA4. But no more! You can learn more about DACs in general from the Digilent Blog as well as how to use an IC DAC from this Instructable.