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© Sealevel Systems, Inc. 3502 Manual | SL9116 9/2022
Appendix E – PC/104
What is PC/104?
The PC has become extremely popular in both general purpose (desktop) and dedicated (embedded)
applications. Unfortunately the PC has been hampered by the large size required to maintain PC
compatibility. PC/104 addresses this by optimizing the PC bus in a form factor designed for embedded
applications.
Briefly, the key differences between PC/104 and the standard “AT” or ISA bus computer are as follows:
•
Reducing the form factor, to 3.550 by 3.775 inches
•
Eliminating the need for backplanes or card cages, through its self-stacking bus
•
Minimizing component count and power consumption (typically 1-2 Watts per module) by
reducing required bus drive on most signals to 4 mA.
Sealevel Systems has been a member of the PC/104 Consortium since its inception. Also Sealevel Systems
has two members on the working group that is currently having the PC/104 bus approved by the IEEE as
P996.1.
Questions about the PC/104 Consortium can be sent to:
PC/104 Consortium
P. O. Box 4303
Mountain View, CA 94040
(415) 903-8304 Ph.
(415) 967-0995 Fax
PC104 Consortium - PC/104 ConsortiumPC/104 Consortium
