|. .|| |
Slide 204 of 250
Floppy disks have many poka-yokes built in. One example is you cannot insert the disk into the drive completely if the disk is upside down. This is because of the corner notch [#1].
720k disks have no hole [#2] while HD disks have hole (mechanism senses)[#3].
Spring loaded shutter mechanism - Do you remember the old 5.25 inch floppies from the early to mid-1980�s? Failsafe disk surface protection [#4].
Slide Tab to protect against erasure. Mechanism senses [#5].
�Precision� alignment. Disk alignment holes and notches [#6] ensure the disk is properly aligned and also provides a �focus� area for manufacturing.