The circuit presented is from 1994 and can be developed with more modern operators. We found the configuration in the National Semiconductor Linear Applications Handbook.
This configuration is very traditional, appearing in several publications around the world. This...
This is the normal configuration for dividing a TTL signal by 7. The 7490 can divide by other...
Found in a 1967 Electronics World, this oscillator changes its tone when objects move in their...