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http://nwcom.info/Manuale/Radio-ELECTRONIC/AVR-IO%20DEVELOPMENT%20BOARD%20FOR%2020%20PIN/avr-io_UART.zip
http://nwcom.info/Manuale/Radio-ELECTRONIC/AVR-IO%20DEVELOPMENT%20BOARD%20FOR%2020%20PIN/avr.docx
http://nwcom.info/Manuale/Radio-ELECTRONIC/AVR-IO%20DEVELOPMENT%20BOARD%20FOR%2020%20PIN/HEX.txt