15-V-Stabilisierung (Mit BC 140)

Molo1ola have just introduced the MC14410 2-0f-8 tone encoder, another member of their CMOS digital subsystem family. This tone encoder is de igned to accept inputs from a 16 button keyboard which is connected in a 4 x 4 matrix. It has two outputs which give digitally synthesized high and low band sinewaves as specified for telephone tone dialling systems. Applications of the MC14410 also include radio and mobile telephones, process control, point-of-sale terminals, ind credjt card verification ter- minals.