I am looking for software which could generate test (combinations of 1 and 0 for inputs) to check if a device works properly. Of couse, this devices are not manufactured by NI
This sounds like a simple program, if all you really want is randomly generated sets of 1&0's. Have you tried writing anything to accomplish this? What is the interface for the hardware?
if tests are generated randomly this garntees only a certain probability that a device is ok. There is a mathematical approach to generate alpha-tests (to test all possible signal paths), beta-tests (test compensatory paths), OV-tests and so on. The whole algorithms here are rather difficult, they based on directional derivatives from logical functions...