In the figure we have the basic way of using the 3-and-a-half-digit counter 7107. The circuit is from an Electronics Now from November 1996. It uses two dual displays.
This simple circuit controls the signal amplitude through a photoresistor optical coupler. The...
In the figure we have the way to obtain the Exclusive-OR function with 1 transistor. The circuit...
This circuit uses as an indicator a common micrometer type VU with 200 uA of full-scale current. The...