This is a PIC-BASIC board that was previously sold at Akizuki Denshi. It cannot be used as is. You will need the PIC-BASIC development software (117839) from Akizuki Denshi. Akizuki Denshi also seems to still be selling a usage guide. - Model: PIC16F877 - Size: 40-pin DIP - Operating Frequency: 20MHz - Accessories: Pin header - Version: PIC-BASIC version 1.0 This item has been stored for a long time. It was kept as a spare. It should be unused, but if there is anything written on it, please erase it before use. It was an easy-to-use BASIC for simple processing. Thank you for looking.