 If the division simply "gave" them away at cost as part of a system purchase, they would never have a real budget of their own.Instead, a plan was established in which it would share profits with the divisions selling its peripherals, a plan eventually used throughout the company.The tape transport was followed by the "405 Card Reader" and the "415 Card Punch", followed by a series of tape drives and drum printers, all of which were designed in-house.