E-learning tool and excercises for teaching digital testUbar, Raimund-Johannes; Orasson, ElmetProceedings of the 2nd IEEE Conference on Signals, Systems, Decision and Information Technology : Sousse, Tunisia, 20032003 / [6] p. : ill https://pld.ttu.ee/dildis/publications/E-Learning%20tool%20and%20Excercises.pdf