I am thinking about ordering this:
and I have no idea (Google has not proven helpful) what is the big difference between a 2n2222 and 2n2222a Transistor. I am using these for logic gates (for now just basic AND, NOT, and am working on my own full adder). I wish to buy the 100 pack on EBay, as it is cheap compared to buying a 15-pack at RadioShack (which only contains 5 of the kind I use) for a couple of bucks. What should I know, though, about 2n2222a and its use in logic gates (like different collector, emitter, base, etc.)?