电子元器件封装规范，经过多年经验总结，初学者或有经验者都可参照。 独一无二的硬件参考资料。希望对大家有所帮助。绝对的物有所值！

OTII服务器技术规范V1.2

阿里的java编码实践标准，推荐使用

1376-2013《电力用户用电信息采集系统通信协议》376.2-集中器型式规范

英文原版Apple iPod接口规格， 介绍了iPod扩展接口远程命令和响应协议，允许将 iPod 的用户界面转换为其它应用场景如，仪表板收音机、大屏幕显示器或方向盘安装的遥控器等汽车娱乐系统，至于iPod外置设备的基本硬件通信特性和软件接口协议请参照另一规范-iPod Accessory Protocol Interface Specification， 值得iPod开发者参考学习！

从墙外的蓝牙官网上下载的，1英文版本 分别有三个pdf: 1、《Mesh Profile》 2019-01-21 This Bluetooth specification defines fundamental requirements to enable an interoperable mesh networking solution for Bluetooth low energy wireless technology. 2、《Mesh Model》 2019-01-21 This Bluetooth specification defines models (along with their required states and messages) that are used to perform basic functionality on the nodes in a mesh network beyond the foundation models defined in the Bluetooth Mesh Profile specification [2]. This specification includes generic models defining functionality that is standard across device types, and models, such as lighting control, sensors, and time and scenes, to support key mesh scenarios. 3、《Mesh Device Properties v1.0》 2017-07-13 This specification contains the normative definitions for all adopted GATT characteristics and characteristic descriptors, with the exception of those defined in the Bluetooth Core Specification or in Bluetooth Service specifications.

GB∕T 33476.3-2016 电子公文格式规范 第3部分：实施指南.pdf

GB∕T 33476.2-2016 电子公文格式规范 第2部分：

GB∕T 33476.1-2016 电子公文格式规范 第1部分：

SATA3.0官方规范版本，该规范是SATA最新规范，为官方正版，无删减。