No. 'DOS' is an acronym meaning 'disk operating system'; not the same thing as 'an operating system'. All thumbs are fingers, but not all fingers are thumbs.
For instance; CP/M[1] (the precursor of MS-DOS[2]) is an operating system. As is NOVELL. There are many other examples.
[1] Originally "Control Program and Monitor", though later changed to "Control Program for Microprocessors".
[2] Microsoft DOS
PC-DOS is the original operating system for the IBM PC. It is basically the same operating system as MS-DOS, but was distributed by IBM instead of being licensed directly from Microsoft.
dos operating system
There is nothing called lenovo DOS OS. DOS is the operating system which can be loaded in lenovo hardware..
DOS stands for Disk Operating System. To be useful computers have to have an operating system. The early IBM PC computers used the MS-DOS operating system. A DOS command is an instruction to the DOS operating system. It must be in a specific form. For example, the command DIR told the DOS operating system to list all files. These commands were typed at a place called the DOS command line. There a many such commands.
MS-Dos is Microsoft Disk operating System. The operating system for early IBM based computers.
Both are same as DOS is also an OS.. But Dos is Character User Interface(CUI) But latest Operating systems are Graphical User Interface(GUI) ex: Windows xp, Windows 7, Windows Vista Etc.,
Which/whose DOS? The earliest DOS that I know of was one of two very primitive operating systems developed by IBM in 1964-1965 for the System/360 because their planned operating system (which never did get finished to specification) was hopelessly behind schedule and overbudget. These were TOS (Tape Operating System) and DOS (Disk Operating System), both were simple batch job operating systems with only primitive multitasking ability (to prevent the computer from being idle when a program did I/O.).
DOS is just the operating system just like Windows XP. DOS SHELL is a program in DOS in which you can browse files and open them, etc. Just generally an easier way to move around the DOS operating system
MS-DOS Command promt is the third operating system
Yes..
NO
MS-DOS is an operating system developed by Microsoft Corporation. Its called Microsoft Disk Operating System.