This invention refers to an electronic computer 10 having a reader 21 for the reading of removable magneto-optic media (CD-ROM) 14. The electronic computer 10 allows even non-expert users to playback the CD-ROM media by pressing pushbuttons 48 on a button panel 45 and visualises on a display 47 information...http://www.google.com.au/patents/US6047223?utm_source=gb-gplus-sharePatent US6047223 - Electronic computer having a magneto-optic unit