Method for selling data sets; vending machine and system for selling telecommunication software

摘要

It is checked whether a suitable memory unit (MEM 1) is coupled with an interface unit (INTER 1) of the automatic vending machine (AUT) so that there can be a transmission of data, and also whether a pay collecting unit (PAY) has given a release signal. When these two conditions are satisfied, a required data set or software program is stored in the memory (MEM 1), so that its use is circumscribed and is not simply a copy recorded on tape cassette. For this purpose the equipment includes a use-shrinking unit (RESTR) which implants certain bounds on the practical application the program.