送交者: steven 于 2006-2-20, 21:04:31:
回答: No. It is multi-tasking and time-sharing 由 xinku 于 2006-2-20, 20:46:53:
mean the system is time sharing. Time-sharing requires a scheduler which takes the running process "off-line" and put other processes on the queue to run. It is a lot more difficult than schedules other jobs when the current job is doing I/O.