Wednesday

April 23, 2014

April 23, 2014

Posted by **dj** on Thursday, August 7, 2008 at 6:41am.

with this sizes:

size 8

size 5 1/4

size 3 1/2

(maybe they are size inches)

i search and search and search

but i cant find them please i

will pass this on monday thx!

Jiskha rock!

- Computer -
**Writeacher**, Thursday, August 7, 2008 at 8:17amThose were referred to as "floppy disks" (although they weren't very floppy!) or diskettes. They were measured in inches.

http://en.wikipedia.org/wiki/Floppy_disk

Be sure to scroll down to the chart showing the different sizes, years used, formats, etc.

http://www.webopedia.com/TERM/F/floppy_disk.html

Drawings of the 5.25" and 3.5" are shown here, along with explanations.

http://computer.howstuffworks.com/floppy-disk-drive.htm

- Computer -
**Writeacher**, Thursday, August 7, 2008 at 8:22amMy first two computers ran only on 5.25" diskettes -- program on one, data on the other. No hard drive.

Then my son installed a hard drive in place of one of the 5.25" drives, so I learned to put programs on the hard drive and use the diskettes for data.

Then he replaced the 5.25" with a 3.5" diskette -- the smaller ones held LOTS more data than the larger one did!

My next several computers had hard drives and one A drive (for 3.5" diskettes). One of them also had a zip drive -- http://www.webopedia.com/TERM/Z/ZIP.html -- for zip disks which held an amazing amount of data. I used those only for storage of photos!!

Now everything is on the hard drive, and I back data up to the separate back-up drive, which is simply an external hard drive. No more little diskettes. I use email attachments or "flash drives" if I want to transfer data from one computer to another.

Times do change.

- Computer -
**Dr Russ**, Thursday, August 7, 2008 at 8:57am8" drives were often for specifc instruments or application rather than for a PC. The computers attached to Mass spectrometers and ICPOES (a type of optical emission spectrometer) were two I came across that used these in the 1980s. They look like a scaled up version of a 5 1/4" disk.

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