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运行于Android studio的java代码，有完整数据库，需要连接navicat,只要修改DB.properties代码里的你的navicat密码即可，若没有密码，则是password=   ,这是非常好，没有任何错误的图书管理系统代码

安卓NFC读写非接触IC卡是一款基于非接触IC卡的NFC应用，支持符合ISO7816—3、ISO15693和Felica等国际标准卡片的读取，能够读取的电子标签包括公交卡、银行卡、图书馆射频标贴等。NFCard可以用来读取电子钱包（主要是公交卡）中未加密的余额、交易记录、标识等信息。该软件使用了模块化设计，方便扩充支持其他特殊类型的卡片协议和指令。(Android NFC read write non-contact IC card is a NFC application based on Contactless IC card, support in line with the international standard ISO7816- 3, iso15693 and felica etc. card read, to read electronic tag includes bus card, bank card, library RF stickers and so on. NFCard can be used to read the electronic wallet (mainly public transport card) in the balance of the encryption, transaction records, identification and other information. The software uses a modular design to facilitate the expansion of support for other special types of card protocols and instructions.)

This is PCB and schematic of USB to Serial converter using PL2303HXD chip.

STM32F407 MPR121键盘模块驱动，可以实现12个触摸点并且读出键值(STM32F407 MPR121 driver)

Android富文本编辑器源码+服务端 完整实例下载

支持闪光灯、前置、后置摄像头拍摄，有预览功能，非常不错

Android 5.0 自定义各种样式进度条(Android 5.0 Customize various style progress bar)

十分简洁明了的android应用软件注册画面的小程序(Very concise android application software registration screen applet)

android高仿美食天下源码

类似新浪微博的加载图片