isd1700系列语音芯片用C51实现~！ 很好-isd1700 series of voice chips used to achieve ~ C51! Good

ISD1700系列最全PDF资料，几乎已经在网络上失传，有了这个资料，1700系列就搞定了。-Most ISD1700 Series PDF data, the network has almost lost, with this information on to get the 1700 series.