然后，CPU可以从中提取指令并执行它们。
From there, the CPU can then extract the instructions and execute them.
处理器的工作就是从内存中提取指令和操作数并去执行每个操作。
Processor's job is to retrieve instructions and operands from memory and to perform each operation.
程序可以被编码为位模式并存储在主存储器中。然后，CPU可以从中提取指令并执行它们。反过来，要执行的程序可以容易地改变。
A program can be encoded as bit patterns and stored in main memory. From there, the CPU can then extract the instructions and execute them. In turn, the program to be executed can be altered easily.
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