ISD1700语音芯片系列。参加嵌入式大赛，获奖了。本人自己修改了程序，画了原理图和PCB，程序和PCB都通过了验证。共享给大家-ISD1700 voice chip series. Participate in the embedded contest, won the prize. I make changes to the program, draw the schematic and PCB, procedures and PCB have passed validation. For