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Hello my friends, sorry for my english and sorry also for the sunglasses
but
to have enough light for this very bad camera
I need uh... I need an open window behind it
and then in front of me
today I would like to talk with you about personal computer
computer is a word with a latin origin "Computare"
that is composed by "***" that means "together"
and "putare" that means "cut"
then "computare" take the meaning of "compare to have a net result"
computer then is a calculator
where user insert data in input
and it gives you an output result
A Personal Computer is a computer that can be used by only one person
instead of very old computers or mainframes that need more than one person to work
more than one technician
today we use the
term "personal computer" to refer to IBM Compatible Computers
but due to the meaning of the
word "computer"
we can say that also a playstation is a Personal Computer or a
Macintosh is a Personal Computer
they are not IBM Compatible
but they are Personal Computers
Italian and English Wikipedia agree to consider the Olivetti Programma 101
the first ancient of the Personal Computer
it was a desktop computer
created by the italian engineer Pier Giorgio Perotto in the 1965
but Olivetti was already an important name in the world of the electronic system
considering that in the 1957
the italian chinese Mario Tchou
created the ELEA 9003
the first "only transistors" computer in the world
in the early '70
another italian engineer Federico Faggin, working for Intel,
was one of the most important name in the creation of the first microprocessor
the microprocessor permit to create the first microcomputers, computers more little
than before
the 2 computers that you are seeing here
are 2 microcomputers of the 1983
one of the first microcomputer,
not the real first one but
surely one of the most important,
was the APPLE I by steve jobs
In the early '80 at the end of the 1980
IBM was searching for a Operating System for its new creation
the IBM Personal Computer
then they talked with the Digital Research
that was producing the CP/M that was the standard operating system for the microcomputers at that time
but they didn't find an agreement
that IBM decided to take contact with Microsoft
Microsoft, at that time, was producing only programs languages like the Microsoft Basic
but uh...
they decided to buy the rights from the Seattle Computer Products
of the QDOS , Quick & Dirty Operating System
in a second time named 86-DOS
that was a clone of the CP/M
Microsoft fast recompiled it and sent it to the IBM
that was quite satisfied of this product
in anycase, during some checks, they found some bugs
and decided to recompile it again by themself
creating the PC-DOS
At the beginning the PC-DOS was
licenses by both Microsoft and IBM together
while the next versions
uh... they will be licensed separately
MS-DOS for Microsoft and PC-DOS for IBM
On the other side of the world,
in Italy, here where I am
in the 1982 Olivetti created the M20,a microcomputer with
a proprietary Operating System that was the PiCos
but there was no need of too much time to understand that ...
the IBM with its
DOS
defined that way in the market
then the next year, in the 1983,
Olivetti decided to create an IBM compatible computer
the M24