The CMX823 programmable paging decoder IC is a high performance, low power audio tone decoder. It supports tones from 280 kHz to 3.5 Hz and allows users to create their own tone frequency alphabet for ...

The SKY13292-365LF, a 4 x 2 switch matrix, combines a digital decoder with the RF switching network and tone/voltage detect within a lead-free, RoHS-compliant QFN plastic package measuring 4 mm x 4 mm ...

Decoding the telephone-generated DTMF is the purpose of building the DTMF decoder 2 which can be connected directly to a serial port and use a HyperTerminal on a PC to view the digits. A 16×2 LCD ...

The Tone-Detector is a solution to an old and failing hardware solution used by a fire department I volunteer for. Issue: Our fire department serves two counties. The fire deprtment operates on one ...

If you want to blink an LED once every second, you could use just about any old timer circuit to create a 1 Hz signal. Or, you could go the complicated route like [Anthony Vincz] and grab 1 Hz off a ...

This report discusses the design of receivers for the pilot-tone (Zenith-G.E.) stereophonic broadcasting system with particular reference to the requirements for minimizing susceptibility to ...