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註釋Experts Ashley and Fernandez show how to get started with PC DOS. This self-contained, hands-on introduction covers DOS up to version 4.0, and is usable with either the IBM or the Microsoft version. Each chapter follows a common format--there is a short introduction and outline of objectives, followed by clear explanation of the individual topics to be covered, and ending with exercises to try at the keyboard. Useable with a hard-drive or floppy disks.