Among devices available with a 1-wire interface, the best known are memories, temperature sensors, battery monitors, and addressable switches. One-wire ADCs are also available, but there are no 1-wire DACs. You can, however, build a simple 1-wire DAC using addressable switches. This article, by Bernhard Linke of Maxim, shows how to do this, and it includes full analysis as well as the circuit schematic.
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