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Slide 202 of 250
Computer Files
Microsoft: File type identified by file name suffix. If one does not add the correct suffix, the program the file is from will not recognize it.
Macintosh Poka Yoke (1984): File type and creator application are identified and embedded in the first part of every file. File name plays NO part in recognition by the originating program.
Computer Floppy Drives
Microsoft: Disk must be inserted and ejected by hand. It is possible to eject a disk while it is being written to.
Macintosh Poka Yoke (1984): Disk drive grabs disk as it is being inserted and draws it in and seats it. Disk cannot be manually ejected. You must drag the �desktop� icon for the disk to the �Trash�. The drive then ejects the disk as long as there are no disk operations taking place.
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