Editing Apple DOS (section)

{{Short description|Family of disk operating systems}}
{{Refimprove|date=November 2011}}
{{Infobox OS
| name                   = Apple DOS
| logo                   = <!-- filename only (no wikilink, no Image:/File:) -->
| logo caption           = 
| logo size              = 
| logo alt               = 
| screenshot             = Apple DOS.png
| caption                = Apple computer running a [[Hello world program|Hello World program]]
| screenshot_size        = 
| screenshot_alt         = 
| collapsible            = 
| developer              = [[Apple Inc.|Apple Computer]]
| family                 = Apple DOS
| working state          = Discontinued
| source model           = [[Proprietary software|Closed source]]
| released               = {{Start date and age|1978}}
| discontinued           = <!-- DON'T use this for articles about releases of operating systems. -->
| RTM date               = <!-- {{Start date and age|YYYY|MM|DD|df=yes/no}} ONLY for articles about OS releases -->
| GA date                = <!-- {{Start date and age|YYYY|MM|DD|df=yes/no}} ONLY for articles about OS releases -->
| latest release version = 3.3
| latest release date    = {{Start date and age|1980}}
| latest preview version = 
| latest preview date    = <!-- {{Start date and age|YYYY|MM|DD|df=yes/no}} -->
| marketing target       = 
| programmed in          = [[Assembly language|Assembly]]<ref>[https://s3.amazonaws.com/s3data.computerhistory.org/atchm/documents/102723981-05-01-acc.pdf Apple II DOS - Source Code]</ref>
| language               = <!-- Supported human languages (English, French, Italian, Arabic, ...) -->
| update model           = <!-- APT, Windows Update, etc. -->
| package manager        = <!-- dpkg, rpm, Windows installer, etc. -->
| supported platforms    = <!-- IA-32, x64, Itanium, ARM, etc. -->
| kernel type            = [[Monolithic kernel]]
| userland               = 
| ui                     = 
| license                = Apple Software License Agreement
| preceded by            = 
| succeeded by           = 
| other articles         = 
}}
'''Apple DOS''' is the [[disk operating system]] for the [[Apple II]] computers from late 1978 through early 1983. It was superseded by [[Apple ProDOS|ProDOS]] in 1983. Apple DOS has three major releases: DOS 3.1, DOS 3.2, and DOS 3.3;{{sfnb|Worth|Lechner|1981|pages=2-1,2-2,2-3}} each one of these three releases was followed by a second, minor "bug-fix" release, but only in the case of Apple DOS 3.2 did that minor release receive its own version number, Apple DOS 3.2.1. The best-known and most-used version is Apple DOS 3.3 in the 1980 and 1983 releases. Prior to the release of Apple DOS 3.1, Apple users had to rely on [[cassette tape|audio cassette tapes]] for data storage and retrieval.