Latest / 70 80 / SETTANTAxOTTANTA: 1971. Nasce il floppy disk e in pochi anni diventa un'icona tuttora sui nostri schermi

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SETTANTAxOTTANTA: 1971. Nasce il floppy disk e in pochi anni diventa un'icona tuttora sui nostri schermi · 70 80

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  to 70x80, the section of 7080 .it that deepens
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  the themes of the portal. I'm with the journalist
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  Marco Barsotti. What are we talking about? Let's
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  talk about the floppy disk. Before the cloud
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  apps, before the USB keys and external hard disks,
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  passionate professionals who wanted to use a
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  PC used the music cassettes to memorize their
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  programs, or they wrote them carefully, line
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  by line, copying them from magazines. Then, one
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  happy day, the floppy disk appeared. What do
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  cassettes music have to do with PCs? First of
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  all, it is necessary to remind younger readers
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  what these last ones were. It is a support created
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  in the 60s of the last century by Philips to
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  record and reproduce the voice and in fact the
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  microphone was always sold with the recorders.
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  Many of the advantages of the cassette, also
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  called stereo 7, in a single shot was eliminated
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  the need to roll up the tape of the old recorders
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  and suppressed the root of the numerous inconveniences
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  due to the structure of the coils themselves.
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  we are all at least less young when reality deviated
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  from this ideal with nests systematically out
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  of the box frivolously various during reproduction
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  and the B side listenable in the background during
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  the reproduction of the A side we said that the
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  philips creates the format for the function of
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  a tape recorder but the young people of the time
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  decide to start recording their own vinyl records
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  and distribute them to friends by forcing them
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  major from first to threaten them with various
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  texts that were reproduced on the covers of the
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  records and subsequently to remedy the missing
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  earnings by proposing the same albums also in
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  cassette format generally recording with the
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  worst possible quality on tapes that seemed to
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  be bought at the regional market but the users
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  did not limit themselves to music. In fact, someone
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  discovers that the sounds generated by modems,
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  objects used for communication between distant
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  computers, could be recorded on cassettes. So
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  you could tell your computer, at the time probably
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  an Apple II or a Sinclair, to play the program
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  and quickly press the REC button to record it,
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  thus generating a reusable copy of the program,
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  in addition to being able to make another one
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  to give to a friend. However, there was a basic
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  problem, the total unreliability of the system.
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  Once out of two, the program was tiredly recorded,
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  it could not be re -read and therefore it was
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  loaded into the memory for execution, or this
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  was read with errors, with the result that the
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  program, often in a video game, on the most beautiful.
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  In parallel, in the professional world, some
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  invent a brilliant alternative. It is in fact
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  1971, the year in which IBM, to solve a problem
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  of its huge mainframes in large mechanical center
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  computers, as they were called at the time, invents
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  the 8 -inch floppy disk. It is a flexible magnetic
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  disk that uses a protective case equipped with
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  an internal filter to clean the dust. Initial
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  capacity according to the IBM site 80 kilobytes,
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  in quotation marks the equivalent of 3 bit. perforated
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  cards, we do not know why IBM decided that the
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  analogy with perforated cards could make anyone
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  understand. Let's say then that in the first
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  approximation, considered with a good quality
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  mp3, it occupies about 10 megabytes, to be able
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  to record, for example, Imagine by John Lennon,
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  120 floppy disks would have been enough. But
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  the account is absolutely theoretical in that
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  the mp3 format at the time had not yet been invented,
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  but let's get back to the flops. The name floppy
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  derives from the flexibility of the internal
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  disk, as the inventor, according to sources,
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  We find David L. Noble, part of the team that
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  developed the famous mainframe, System 370 DBM,
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  or Alan Shugart. The latter, however, seems to
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  have excelled more than anything in marketing,
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  more than in invention. The Apple II, considered
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  by many the first PC not intended only for electronic
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  enthusiasts, is equipped with floppy disks almost
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  immediately. Although it was also born with a
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  music interface, already in 1978 it was added
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  to an external floppy drive, the Disk 2 Floppy
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  Disk Subsystem. designed by Steve Nozniak himself.
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  It was a smaller system, 5 inches and a quarter,
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  about 13 cm compared to 20 cm of the IBM one,
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  which thanks to the ingenious modulation invented
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  by Watts, the diminutive of Watsia, could contain
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  140 KB with any operating system. Even IBM adopts
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  the smallest format when it launches the famous
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  IBM PC. Then nothing happens until 1984 and the
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  arrival of the first Mac, the Macintosh, which
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  was defined as the computer for the rest of us.
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  And the flexible floppy, full of holes, was not
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  considered user -friendly enough. Moreover, it
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  was too big for the tiny Macintosh. But right
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  that year, Sony invented and began to produce
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  an even smaller floppy format, the 3 .5 inches,
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  about 8 centimeters, which the world discovers
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  thanks to Apple. Flop -Wii! This type of floppy
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  is used for a magical insertion and extraction
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  mechanism. When the disc is inserted, about half
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  the way, the system seems to tear it apart and
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  swallow it, and when you want to expel it, no
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  key. The expulsion is commanded by software,
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  generating the particular noise, precisely Flop
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  -Wii, absolutely similar to that of the Polaroid
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  SX -70, which emitted the latter when it exposed
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  a photograph. Capacity? In the first version
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  400 kilobytes, then 800 kilobytes, up to 1 .4
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  megabytes in 1984. With the result that to memorize
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  our famous Lennon song, only 7 floppy disks would
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  have been enough. The flops are perhaps stolen
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  from our computers, but not from our lives. As
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  well knows who, even in the very recent version
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  of Microsoft Word 365, decides to save his own
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  document by clicking on the dedicated icon. Look
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  at it well on your computer. È proprio quella
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  del nostro amico FloppyDisc. Grazie a Marco Barsotti
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  per aver trattato il tema odierno. Appuntamento
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  alla prossima puntata di 70x80. Avete ascoltato
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