This circuit was found in an Electronics World of 1969. The components of the time. The operational can be replaced by modern equivalent type.
This configuration was found in a 1970s American magazine. The circuit uses both CMOS logic and...
Found in the August 1982 issue of Radio Electronics magazine, this circuit lights LEDs in sequence...
This flasher with a well-known configuration was suggested by a 1977 publication by Radio Shack. The...