Found in a Philips publication from the 1970s, this circuit uses a DO040, which is difficult to obtain today. The circuit is powered by 12 V on pins indicated in the diagram.
Found in a Popular Electronics from the 90s, this circuit can be made with current equivalent...
This circuit uses three flip-flops and two NAND ports to obtain a frequency division by 5,...
You can program the 4018 in other ways, as shown in the figure. In this 7 divider configuration, for...