Keil是一个德国知名软件公司Keil（现已并入ARM 公司）开发的微控制器软件开发平台，是目前ARM内核单片机开发的主流工具。Keil提供了包括C编译器、宏汇编、连接器、库管理和一个功能强大的仿真调试器在内的完整开发方案，通过一个集成开发环境（uVision）将这些功能组合在一起。

keil已推出了keil uvision5，相信很多用户都需要keil uvision5的注册机。(Keil is a well-known german software company keil ( now incorporated into arm company ) development of microcontroller software development platform, is the current arm core SCM development mainstream tools. Keil provides a complete development solution that includes a c compiler, macro assembly, connector, library management, and a powerful simulation debugger that combines these features through an integrated development environment ( uvision ).
Keil has launched keil uvision 5, which is believed to be needed by many users)