We found this circuit in a documentation from the 90's. Information on the A/D converter was not given but types can be used according to the application.
Found in a 1980s documentation, this circuit makes use of components from that time. Modern...
Suggested by an old Popular Electronics, this circuit is based on an uncommon integrated today,...
For counting to values higher than 16, many 4520 can be cascaded as shown in Figure . The EN...