Baby AT

The form factor used by most PC motherboards prior to 1998. The original motherboard for the PC-AT measured 12″x13″. Baby AT motherboards are a little smaller, 8.5″x13″ usually. The Baby AT is being replaced by the new ATXform factor.

Also see From AT to BTX: Motherboard Form Factors in Webopedia’s “Did You Know…?” section.

Webopedia Staff
Since 1995, more than 100 tech experts and researchers have kept Webopedia’s definitions, articles, and study guides up to date. For more information on current editorial staff, please visit our About page.

Top Articles

The Complete List of 1500+ Common Text Abbreviations & Acronyms

Text Abbreviations reviewed by Web Webster   From A3 to ZZZ we list 1,559 SMS, online chat, and text abbreviations to help you translate and understand...

Windows Operating System History & Versions

The Windows operating system (Windows OS) refers to a family of operating systems developed by Microsoft Corporation. We look at the history of Windows...

How to Create a Website Shortcut on Your Desktop

Website Shortcut on Your Desktop reviewed by Web Webster   This Webopedia guide will show you how to create a website shortcut on your desktop using...

Generations of Computers (1st to 5th)

Reviewed by Web Webster Learn about each of the 5 generations of computers and major technology developments that have led to the computing devices that...

How to Indent in...

Microsoft Word is a graphical word...

Webcam

A webcam, short for web camera, is a piece of video hardware that...

Binary System

The binary system in computing uses the base 2 number system to power...