改程序是用ds18b20,lcd-1602,89c51做的一个代有闹钟的数字钟，并有书签和音乐，非常漂亮！-Change procedures are used ds18b20, lcd-1602, 89c51 make a generation of the digital clock has an alarm clock, and there is a bookmark and music, very beautiful!

华邦ISD1700系列语音芯片设计向导，82 页完整版（主要针对SPI模式）并有完善的书签，-Winbond ISD1700 voice chip design wizard series, 82 full version (mainly for the SPI mode) and a perfect bookmark

Well it s EXTREMELY simple. Use a bookmark instead of a button to process a password. This way only the people to whom you give this to can access it. I know it really has no practical use i can think of but it was a cool idea. I m gonna spruce this

<51单片机自学笔记> 387页 13.8M 高清书签版.pdf,本书以89S51系列单片机为载体，结合作者多年教学与指导大学生电子设计竞赛的经验编写而成。作者范红刚，魏学海，任思璟-<51 single self-study notes> 387 13.8M HD bookmark version. Pdf, book 89S51 Microcontroller carrier, combined with the author s many years of expe