© 2004 Cayman Business
Systems
Rev:
Pre-G3 - Rendered Thursday,
February 12, 2004
Slide 202
Elsmar.com --- The
Cove!
8-Disciplines Problem Solving
Elsmar.com
Every Day Examples
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.
New lawn mowers are required to have a safety bar on the handle that must be pulled back in order to start the engine. If you let go of the safety bar, the mower blade stops in 3 seconds or less. This is an adaptation of the "dead man switch" from railroad locomotives.
Warning lights alert the
driver of
potential problems. These devices employ a warning method instead of a control method.