Also, to go a slightly easier route, if you can afford it, get a PDA (prefferably from Palm), download a database program, and log all of your Electronics terms in a Database. I have a Palm Zire 21 which came with a database program in the package.
This would be far easier than constructing an entirely new E-Dictionary for electronics terms, and you'll also have all the other helpful features of a PDA. try tigerdirect.com or another electronics store for PDAs.