This type of logic is no longer used today. The circuit is from an old American publication and the integrated circuit is uncommon today. Diodes are general-purpose tpes.
This circuit carries a solar source with the ability to follow the sun in its movement. The...
Signals of up to a few tens of kilohertz can be generated by this circuit found in a European...
This configuration found in GE documentation from the 90s, can also be seen elsewhere in this...