MV,
A computer TX (transmitter) simply has a menu on an LCD screen. You use this menu to program the available functions, like 'flaperons' or 'elevons.

You also use the menu to "pick" which model you'll be flying. You've already programmed in that particular model's trim settings, servo reversing, etc.

You do have to have seperate receivers (Rx's) and servos for each plane though. The computer Tx will still allow you to do things a standard Tx won't.

Choose carefully. I like my Futaba 6XAS, but it does have one thing I DON'T like. You can't "name" the models in the Tx, you can only give them numbers. I solved this by putting the associated number on the tail of each plane.
Dennis-