Motorola Two - Chip A/D Converter System Demo Boards

For sale a pair of Motorola Two - Chip A/D Converter System Demo Boards. One board is complete and works as can be seen in the first photo. The second board is only partially completed. These were demonstrator boards sold by Motorola in the mid 1970s to demonstrate their two chip A/D converter system. They are powered by 5V DC and the full scale input is limited to 2 volts. Included is the construction booklet as well as data sheets and application notes detailing how the 2 chips work and how to make a multi range volt meter and more. I was the Motorola product manager for Hamilton/Avnet in 1975/1976 and these were given to me by the Motorola rep who knew I tinkered with electronics.