The TAA865 integrated circuit used in this 1986 project is no longer common today. The circuit is a documentation of the time and the time is given by RC that has indicated the maximum values.
November 2016 - Mouser Electronics already has the Arduino Shield 101 for IoT applications with...
The presented circuit has the output voltage digitally selected by the transistors on pin 4 and,...
This circuit was found in 1968 General Electric documentation. The circuit uses components from the era...