ly, can in the limited time to make rapid response to external events; ? Secondly, in the embedded application, most systems has a good real-time performance, and embedded systems mostly with fast start-up characteristics. 10 1.3 The characteristics of embedded system 3. Robust and reliable ? At present, there are mainly two kinds of mechanisms to ensure the reliability of the system, one is the hardware mechanism, such as a hardware watchdog timer, it can be in the software of losing control of the system to normal operation; two is a software system, such as memory protection and reset mechanism. ? In order to improve the reliability of the system, embedded systems often use solid state storage, software is solidified in the memory chip, rather than stored in disk carrier in.
全文预览
