A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.

History of computers, digital electronics, hardware manufacturers and software developers.
Retro hardware generally: boards, extension cards, power supplies, peripherals. Use more specific tags as appropriate; use [case] instead for enclosures.
475 questions
For questions about the different versions and products of the Commodore 64
244 questions
The Apple II series of personal computers and related software and hardware. Use [apple-iigs] for the Apple IIgs in particular, or [apple] for Apple hardware in general.
213 questions
For questions related to the Commodore Amiga family of personal computers.
193 questions
For questions about the early IBM PC, clones and compatible systems.
187 questions
MS-DOS, the Microsoft Disk Operating System, and its OEM-branded versions. Use [dos] instead for the x86 DOS family in general.
184 questions
For questions regarding graphical - as opposed to text - processing and display.
166 questions
For questions related to the use, restoration and imaging of floppy disks.
164 questions
Assembly languages in general, of any architecture. Use with the particular processor’s tag as appropriate.
163 questions
Programming languages and constructs. Please check for language-specific tags first and use those instead, if applicable.
For questions regarding the Zilog Z80 microprocessor
154 questions
Processes and software for emulating retro hardware (e.g. MAME, QEMU). NOT EVERY EMULATION QUESTION IS ON-TOPIC; SEE TAG WIKI.
153 questions
For questions about computer memory in a retrocomputing context
148 questions
For 6502 series of processors, including hardware and assembly language questions. Use with [hardware] for the hardware interface in particular.
132 questions
BASIC: a high-level programming language favored in retro systems. For dialect-specific questions, use a tag such as [microsoft-basic], [applesoft-basic], etc.
126 questions
For questions about the different versions and products of the Sinclair ZX Spectrum computer
124 questions
For questions regarding hardware and drivers used for video output.
121 questions
For questions about Apple's Macintosh line of computers.
106 questions
For questions about the maintenance, usage, or history of retro keyboards.
94 questions
For questions about the applications and programs that can be run on retro devices (computers, etc.)
94 questions
For questions regarding the products of IBM, International Business Machines.
92 questions
For quesitons regarding Commodore Business Machines itself or its products that do not have a more specific tag such as commodore-64 or amiga.
89 questions
Retro games, both hardware and software-based. NOT EVERY GAMING QUESTION IS ON-TOPIC. See tag wiki for guidance.
88 questions
For questions about the different versions and products of the NES (Nintendo Entertainment System)
80 questions
78 questions
For general questions regarding operating systems on retrocomputers.
77 questions
For questions about the Unix operating system.
75 questions
For use when seeking identification of a game played on a retrocomputer.
72 questions
For questions about the different versions and products released by Nintendo
72 questions
For questions regarding Cathode Ray Tube monitors
71 questions
For questions about Read Only Memory.
70 questions
for questions about retrocomputing mainframes or clusters
70 questions
General questions about computer chips and chipsets in retro hardware. Use a specific chip’s tag instead if available.
69 questions
The C programming language: its historical aspects and use on/targetting retro platforms.
62 questions
Retrocomputing hardware and software created by Intel.
62 questions
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