1. Onboard complex frequency decoder chip MT8870
2. Onboard voice input interface
3. Onboard five LED indicators for easy viewing output state
4. Basic pins of the chip have been drawn
5. For Arduino Raspberry Pi ARM MCU and more
2. Onboard voice input interface
3. Onboard five LED indicators for easy viewing output state
4. Basic pins of the chip have been drawn
5. For Arduino Raspberry Pi ARM MCU and more
