This circuit from General Electric was found in a 1967 documentation. The SCR is of the time, as are the transistors, but equivalents can be used.
This circuit was found in American documentation from the 60's. The transistors are made of...
This divider by 8 is synchronized because it is implemented based on TTL or CMOS logic according to the...
This circuit causes the LED to flash at a frequency determined by the capacitor and resistor...