This is generally done by selecting one process for execution and letting it run for a short period (called a timeslice), or until it needs to wait for some event, such as IO to complete.
通常的做法是，选择一个要执行的进程，并让它在短时间内运行(这个时间称为时间片)，或者一直运行到它需要等待的一些事件，如要完成的IO等。
It is the programmer's responsibility to code the necessary instructions to process the IO operation and to provide the appropriate results.
程序员的职责是编码必要的指令来处理IO操作并提供适当的结果。
Is it just an IO operation or is it a part of a process creation?
难道只是一个IO操作，或者是它的一个进程创建的一部分？
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