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AT
The AT form factor was originally
a very popular motherboard. It remains the largest of the motherboard
form factors at twelve inches wide and eleven to thirteen inches deep.
The AT was the most common motherboard up to about 1995 and was used
primarily with the 386-class processor. A unique characteristic of
this form factor is that CPUs and memory modules (SIMMs and DIMMs) were
inserted directly onto the motherboard. In today’s motherboards,
those components are inserted into specially designed slots on the motherboard.
Both processor and memory units were considerably smaller when the
AT form factor was popular and did not require specific modules where
they needed to be “plugged in”. You will see AT motherboards
only in older, legacy machines and it is unlikely that as a technician,
you will ever service one. Having said that, you never know when a
friend or a client will ask you to work on the computer they’ve
been relying on for the past ten years.
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CertiGuide to A+ (A+ 4 Real) (http://www.CertiGuide.com/apfr/) on CertiGuide.com
Version 1.0 - Version Date: March 29, 2005
Adapted with permission from a work created by Tcat Houser et al.
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