Http://www.smth.org/-> Embedded System -> Essence -> Embedded System Getting Started -> About Definition Discussion
Embedded CPU: It is not necessary to absolutely think that a CPU is embedded or not, but should be determined by an application, integrated peripheral controller and provides a complete device interface, itself a subsystem (but not a system), In a larger system, it is called embedded
Embedded System: Embed a subsystem in a relatively large system to complete a specific function, regardless of whether he is an embedded CPU, an embedded motherboard or an embedded OS. This is only for application methods, and does not involve his reliability, physical size, etc. Based on application, computer technology, hardware and software can be cropped, adapt to application systems for dedicated computer systems for functional, reliability, cost, volume, and power consumption.
Embedded operating system: Small size, tailoring, reliability, and real-time should not be the main crisit.
Embedded System: a Combination of Computer Hardware and Software, And Perhaps Additional Mechanical or Other Parts, Designed To Perform A Dedicated Function.Contrast with General Purpose Computer.
RTOS: Any Computer System, Embedded Or OtherWise, That Has Deadlines.
From the above definition, it can be seen that the definition of Embedded is mainly to see if it is for specific applications. RTOS is mainly for performance requirements.
