be described in greater detail however it should be recognized that the preferred embodiments of the present invention are provided for illustration rather than limiting the present invention in addition the present invention can be practiced in a wide range of other embodiments besides those explicitly described and the scope of the present invention is not expressly limited except as specified in the accompanying claims fig1 shows a multi user computer system according to one embodiment of the present invention the multi user computer system comprises a master host computer 101 and at least one virtual computer 201 the multi user computer system may provide for a user_ 1 100 and multiple user_ 2 200 for example the user_ 1 100 is equipped with a master computer 101 and a display 102 the user_ 2 200 is equipped with a virtual computer 201 a display 202 a mouse 203 and a keyboard 204 the master computer 101 is a personal computer or a notebook and the display 102 acts as a personal computer pc monitor for the master computer 101 the hardware layer of the master computer 101 may include the hardware in the computer and peripheral devices such as pc monitor are connected to the master computer 101 peripheral devices may be connected to the master computer 101 using the usb universal serial bus protocol usb is a hardware specification that allows a connection to be established between a source device and a peripheral device the display 102 is coupled to the master.