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in the 1948, The Victoria University of Manchester created the Manchester Automatic Digital Machine, called also electronic brain
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IBM developed in the '60 the OS 360, but this operative system was not much time later repleaced by the UNIX operative system.
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the unix operative system, developed in the AT&T bell laboratories, is one of the first operative system, easly to use and modify, it was the perfect system for professional use
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that os that have a command user interface, or all the system that have a testual shell (user listen layer)
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The Apple ][ was an 8-bit home computer that revoluzionized the I.T. sector for end users.
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the first gui by XeroX give the possibility to have a visual and easy to understand view of the computer, actually a lot of elements in the gui are actually present in today system and interfaces
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The ZX Spectrum, one of the first home computer, this simple 8-bit computer can execute the programs with this audio tape, that contain the program how office program, compiler and also videogames.
this computer can be also easly programmed. -
One of the most famous home computer of this years, easly programmable and with a large list of avaible programs.
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one of the first home pc with a GUI included, the high costs of the Lisa (9,995 dollars) selt only 100,000 units
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operative system that contain a grafical user interface to work
this type include all the system easly to use. -
the Microsoft system completly dominate the I.T. sector, today a lot of PCs use XP for home and office uses.
![Apple ][](https://s3.amazonaws.com/s3.timetoast.com/public/uploads/photo/8477118/image/e7b95d918557570a95dc4bc3303c63d7?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=AKIAJB6ZCNNAN7BE7WDQ%2F20251103%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Date=20251103T174820Z&X-Amz-Expires=604800&X-Amz-SignedHeaders=host&X-Amz-Signature=c405a402c9eeecb2127fa3a18e2dbcc06d1d227fa7226f82461416cec7654676)
