from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Computer Science An insulated board on which interconnected circuits and components such as microchips are mounted or etched.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A board on which electronic components and their interconnecting circuits are mounted or etched
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a printed circuit that can be inserted into expansion slots in a computer to increase the computer's capabilities
Sorry, no etymologies found.
A few months later a forty-five-cent circuit board in the military computer alert system signaled that the Soviet Union had just launched a missile attack.