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Re: Reference Table Level 1 to 139 vs. XPs

Sat, Sep 7 2019 9:57 PM by alosso. 66 replies.
  • alosso Germany
    19,342 Posts
    Fri, Sep 6 2019 1:42 PM

    Memories - LOL!

    I used to name myself a data carrier when I walked through the floors of our office, a custom box of 8" floppies in my hand  - about 1982...

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  • ScottHope United Kingdom
    5,974 Posts
    Fri, Sep 6 2019 11:40 PM

    I've never seen an 8" floppy disk. I Guess they were business only.

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  • alosso Germany
    19,342 Posts
    Sat, Sep 7 2019 2:45 AM

    I agree.

    Here are the various formats, 8", 5 1/4", 3 1/2".

    original:
    https://en.wikipedia.org/wiki/Floppy_disk#/media/File:Floppy_disk_2009_G1.jpg

    The two bigger ones were bendable, verbatim "floppy".

    The storage capacities increased with shrinking sizes, from .2 MB (first 8"s) to 1.44 MB (3 1/2" double sided(!))

    In 1981, when the first Intel PCs with MS DOS were introduced, they already had the smallest floppy disks.

    About at that time, I was working with DEC PDP-11 industrial computers - they originated from 1970 and had the largest format.

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  • ScottHope United Kingdom
    5,974 Posts
    Sat, Sep 7 2019 1:37 PM

    Very interesting....

    Sounds like you have been involved with computers for a long time.

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  • alosso Germany
    19,342 Posts
    Sat, Sep 7 2019 2:07 PM

    Maybe ;)

    It all started with BASIC on a Berlin mainframe...

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  • DoctorLarry United States
    2,350 Posts
    Sat, Sep 7 2019 5:49 PM

    alosso:

    ..

    original:
    https://en.wikipedia.org/wiki/Floppy_disk#/media/File:Floppy_disk_2009_G1.jpg

    The two bigger ones were bendable, verbatim "floppy".

    The storage capacities increased with shrinking sizes, from .2 MB (first 8"s) to 1.44 MB (3 1/2" double sided(!))

    In 1981, when the first Intel PCs with MS DOS were introduced, they already had the smallest floppy disks.

    About at that time, I was working with DEC PDP-11 industrial computers - they originated from 1970 and had the largest format.

    I used all those floppy sizes myself, but even though 3.5" floppies were developed in 1981, I never saw an IBM PC with them until several years later.  Maybe they were an option, but we used 5.25" floppies for several years after the PC was introduced.  The 3.5" floppies became standard in 1987 on PCs.

    The first 3.5" floppies I used were on a Macintosh - my second home computer - purchased in 1984 (naturally).  I earlier got an Apple ][+ in 1980, fully decked out with cards in every slot, a wide carriage impact printer, TWO Disk II floppy drives (144KB!), and a lot of software.  

    Ready for the 1980 price of my home system (which I bought after months of research)?

    Over $5,000 in 1980 !  (Yes, I was a total computer geek by then).  Never spent that much on a computer since!

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  • alosso Germany
    19,342 Posts
    Sat, Sep 7 2019 9:57 PM

    DoctorLarry:
    I used all those floppy sizes myself, but even though 3.5" floppies were developed in 1981, I never saw an IBM PC with them until several years later.  Maybe they were an option, but we used 5.25" floppies for several years after the PC was introduced.  The 3.5" floppies became standard in 1987 on PCs.
    This is probably more precise - I only took the "1981" reference when researching yesterday.

    I saw my first DOS PC in 1982, when my nerdy boss showed it off in the office. It was his private device!

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