The MT8870 is a highly integrated DTMF decoder chip developed by Mitel (now part of Microsemi). It is designed to detect and decode the 16 standard DTMF tones, which are commonly used in telephone systems. The chip uses a patented algorithm to detect the tones and provides a digital output that corresponds to the detected tone.
To use the MT8870 in your simulation, you must manually add the library files (typically files) to your Proteus installation: How to Add Arduino Library in Proteus 8 [100% Working] 28 Nov 2020 — mt8870 proteus lib 35
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