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.
504 questions
For questions about the different versions and products of the Commodore 64
271 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.
231 questions
MS-DOS, the Microsoft Disk Operating System, its OEM-branded versions, and x86 DOS clones in general.
For questions about the early IBM PC, clones and compatible systems.
210 questions
For questions related to the Commodore Amiga family of personal computers.
208 questions
Programming languages and constructs. Please check for language-specific tags first and use those instead, if applicable.
193 questions
Assembly languages in general, of any architecture. Use with the particular processor’s tag as appropriate.
191 questions
For questions regarding graphical - as opposed to text - processing and display.
185 questions
Use, restoration and imaging of floppy disks; low-level formats of floppy media. Consider [file-system] for high-level formatting.
180 questions
The Zilog Z80 microprocessor. Prefer [game-boy] instead for questions about the Game Boy CPU nicknamed the ‘GBZ80’.
165 questions
For questions about computer memory in a retrocomputing context
162 questions
Processes and software for emulating retro hardware (e.g. MAME, QEMU). NOT EVERY EMULATION QUESTION IS ON-TOPIC; SEE TAG WIKI.
158 questions
For 6502 series of processors, including hardware and assembly language questions. Use with [hardware] for the hardware interface in particular.
155 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.
142 questions
For questions about the different versions and products of the Sinclair ZX Spectrum computer
131 questions
For questions regarding hardware and drivers used for video output.
129 questions
For questions about Apple's Macintosh line of computers.
112 questions
Retro games, both hardware and software-based. NOT EVERY GAMING QUESTION IS ON-TOPIC. See tag wiki for guidance.
104 questions
For questions about the maintenance, usage, or history of retro keyboards.
103 questions
For questions about the applications and programs that can be run on retro devices (computers, etc.)
103 questions
Commodore Business Machines and their products. Use more specific tags like [commodore-64] or [amiga] instead if appropriate.
101 questions
For questions regarding the products of IBM, International Business Machines.
100 questions
For use when seeking identification of a game played on a retrocomputer.
89 questions
For questions about the Unix operating system.
87 questions
For questions about the different versions and products of the NES (Nintendo Entertainment System)
87 questions
Operating systems on retrocomputers generally.
85 questions
84 questions
for questions about retrocomputing mainframes or clusters
78 questions
For questions about the different versions and products released by Nintendo
78 questions
Cathode Ray Tube monitors: principles of operation and use with computing devices. DO NOT REPAIR CRTs; SEE TAG WIKI FOR DETAILS.
76 questions
The C programming language: its historical aspects and use on/targetting retro platforms.
73 questions
For questions about Read Only Memory.
72 questions
For questions related to terminals such as WYSE, VT100 and Teletype.
71 questions
Hard disk drives: hardware, connection, low-level format and drivers.
71 questions
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