This is a schematic of a basic 7490 decade counter chip.
This is the /10 schematic of the 7490 decade counter chip.
Here is a a basic 7490 decade counter schematic chip circuit with 4 LED's and 4 resistors.
Here we have screen shots of the square waves produced by the blinking LED's at different rates. The square waves represent the rate at which the LED's blinked. blink.