We found this circuit in a technical documentation from the 1980s. The circuit is from Texas Instruments with components from that time, not very common today.
In the figure we have an application for NLAS5113, a new device from on Semiconductor...
This circuit, which draws numbers from 00 to 99, was found in an Italian magazine from 1974, but...
The filter shown in the figure, suggested by Motorola, operates at a cut-off frequency of 1 kHz,...