L4：Cortex A5 GSM SoC RDA8810
RDA8810PL 使用40nm工艺，在单芯片上集成Cortex A5 单核处理器，拥有1GHz主频，专用的调制解调器，射频芯片以及能源管理系统，这个产品的集成度高，用于早期的手机，当前的性价比超高，是高性能MCU的理想替换者。
主要特点：集成256MB DDR2，集成512MB NAND Flash
功能特点：接口和功能全面，BOM成本低
主要短板：已发布很久
芯片封装：LFBGA 14mm X 16mm (325 balls)
参考设计和数据手册
linux系统构建资源
React
A declarative, efficient, and flexible JavaScript library for building user interfaces.
🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
Typescript
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
An Open Source Machine Learning Framework for Everyone
Django
The Web framework for perfectionists with deadlines.
Laravel
A PHP framework for web artisans
Bring data to life with SVG, Canvas and HTML. 📊📈🎉
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
Some thing interesting about web. New door for the world.
A server is a program made to process requests and deliver data to clients.
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
Some thing interesting about visualization, use data art
Some thing interesting about game, make everyone happy.
Facebook
We are working to build community through open source technology. NB: members must have two-factor auth.
Microsoft
Open source projects and samples from Microsoft.
Google
Google ❤️ Open Source for everyone.
Alibaba
Alibaba Open Source for everyone
D3
Data-Driven Documents codes.
Tencent
China tencent open source team.
