LCD display driver (CB7558E)

This LCD driver circuit uses a common component today. The circuit is from 90's documentation.

SCA Decoder (CB6199E)
This Radio Electronics circuit, in an 80's edition, decodes the 67 kHz signal used at the time to...
Reversible Ring Counter (CB6598E)
This circuit was found in a 1966 General Electric documentation. The circuit makes use of PUTs...
Limiter with zener diode (CB7054E)
This circuit was found in an old Electronic Design. It makes use of sidacs and operational not very...