介绍了一种由单片机、MAX4358等组成的嵌入式视频切换器，简述了其工作过程，硬件构成和软件设计。
It introduced an embedded video converter composed by MCU, MAX4358, and etc, it described its operation process, hardware constitution and software design.
然后对嵌入式系统软硬件环境的构建进行了简述，分别从构建硬件环境和软件环境的建立两部分着手。
Then the paper simply introduces construction of the embedded software and hardware environment, including constructing hardware environment and software environment.
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