1) Various forks of Gary Kildall's cp/m. These usually use monolithic singletasking, although programs running under DOS can be written to exhibit multitasking.

2) Microsoft DOS, one of Microsoft's first example's of making money off of borrowed code. Microsoft bought QDOS (Quick and Dirty Operating System) from Tim Patterson in the early 80s. As a result of this, a chain reaction started and Microsoft products now run on approximately 90% of all computers despite their steep prices and reputation of crashing. MS-DOS uses the FAT12 and FAT16 systems natively, and are also fundamental parts of non-NT Windows implementations.

Denial of Service, a very lame way of making it so a computer cant access a specific resource. Usually connected to IRC.

number 2 in spanish. lol its not taking a sh**. Count how many fingers you hold up when you give the peace sign. yea thats 2

Dos: Dirty Old Slut

the opposite of donts

DOS short for daughter of saton