What was the operating system of the first computer?

#dos, the abbreviation of disk operating system, is a type of operating system on personal computers.

In the 15 years from 1981 to 1995, the disk operating system occupied a pivotal position in the IBM PC compatible market. (Recommended study: phpstorm)

Moreover, if some DOS-based Microsoft Windows versions, such as Windows 95, Windows 98 and Windows Me, are included, then its business The life span can be calculated to at least 2000 years. In all subsequent releases from Microsoft, the disk operating system remained.

In the 15 years from MS-DOS1.0 in 1981 to MS-DOS7.1 in 1995, DOS, as an operating system carrier used by Microsoft on personal computers, launched multiple versions. DOS occupies a pivotal position in the IBM PC compatible market. You can directly manipulate and manage the files on the hard disk and run it in the form of DOS.

is a replica of the older operating system CP/M. The DOS family includes MS-DOS, PC-DOS, DR-DOS, Free-DOS, PTS-DOS, ROM-DOS, JM-OS, etc. Among them, MS-DOS is the most famous, and the most free and open is Free-DOS. Although these systems are often referred to as "DOS", no system is named simply "DOS" (only an unrelated 1960s IBM mainframe operating system is named after this).

In addition, several disk operating systems that have nothing to do with DOS and run on non-x86 microcomputer systems also have the word "DOS" in their names, and will also be referred to as "DOS" when discussing the machine specifically. "DOS" (for example: AmigaDOS, AMSDOS, ANDOS, Apple DOS, Atari DOS, Commodore DOS, CSI-DOS, ProDOS, TRS-DOS, etc.), but these systems are not compatible with DOS executable files and MS-DOS API.

Since the advent of Microsoft's graphical interface operating system Windows NT, DOS has appeared in the form of a background program. You can enter run by clicking Run-CMD.

DOS is MS-DOS developed by Microsoft for IBM personal computers in 1979. It is a single-user, single-task operating system.

Later, the concept of DOS also included systems produced by other companies that were compatible with MS-DOS, such as PC-DOS, DR-DOS, and some other relatively unknown DOS-compatible products.

They dominated the operating system from 1985 to 1995 and for a period of time thereafter. The most famous and widely used DOS system was from 1981 to 1995. In the 15 years after Microsoft launched Windows 95 , announced that MS-DOS would no longer release new versions separately. However, DOS compatible with MS-DOS such as FreeDOS continues to develop.

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