History of operating systems without which your computer giants as zero

Sometimes it annoys you, but without them you could do anything. Without operating systems, the computer is as smart as a rock.
We want to have powerful computers with more RAM and processors fast performance graphics cards and so on. They would be smarter than a rock but if we did not have and Software as, which help us the most of the money I give the hardware facilities. Here come into play operating systems, those programs that often when we boscorodim computer crashes.

Operating systems, an idea came quite late

The hardware has always been one step ahead of the software. The idea of ​​creating collections of programs that load at startup and use that to make us better as electronic components, manage files and resources appeared to some time away.

In 1940, computers had no operating system. The machines were so primitive that programs were often introduced bit by bit through mechanical switches. During that time, the programming language was still unknown, and the operating system was not even in the plan.

In 1950, General Motors Research Laboratory developed the first operating system for their computer, IBM 701, and OS can run only one program at a time. This method is called serial processing system because the programs and data were introduced in turn.

And in 1960 it was fashionable all processing systems in series, but they took advantage of better computer resources by running multiple services simultaneously. After this time OS yell evolved in multiprogramming, which could run more programs in memory machines. For example, without multiprogramming systems, the current program was break and processor set on "idle" until the operation I / O (input / output) was completed. The solution of the problem has been solved by dividing the computer's memory into several parts, each for a different job.

Remember the MS-DOS?

In the 1970s, microprocessors, chips and all other components have become small enough to fit into a computer at home, so-called Desktop. At that time, the most widely used operating system was MS-DOS, owned by Microsoft, which can be installed on computers with IBM PC and Intel 8088, and Unix to run on Motorola 6899 processors.

All through 1970, Apple DOS 3.1 was released. Success was imminent. MOS was a computer processor with a frequency of 6502 Mhz 1,023. RAMincludea four boards 64k memory and can even be upgraded by slots. The display colors have 6 high quality (280x192) and 16 colors in lower resolution (40x48). In 1977, a complete Apple II system with maximum features cost around $ 2,600, and now this antique cost several hundred thousand dollars.

How did Android

In 1993, manufacturers of operating systems and expanded coverage in terms of devices, while those from IBM launched the first smartphone in history, called the IBM Simon. It had a touch screen on which they could read emails quite easy.

Only in 1996 he launched the first Palm operating system for mobile devices, called Palm OS. All the same, year shows the Windows CE platform Windows Mobile, available on most PDA devices of the time.

By 1999 the first public showing of Nokia Symbian S40, put on your own phone, the Nokia 7110. A year later, Symbian OS has become the most popular mobile operating system installed on most Nokia devices, but also on Ericsson phones.