Before revision: However, embedded software can become very sophisticated in applications such as routers, optical network elements，airplanes, missiles, and process control URL Operating systems Unlike standard computers that generally use an operating systems such as OS X , Windows or GNU/ Linux, embedded software may use no operating system.
After revision: However, embedded software can become very sophisticated in applications such as routers, optical network elements，airplanes, missiles, and process control URL Operating systems Unlike standard computers that generally use an operating systems such as macOS , Windows or Linux, embedded software may use no operating system.