| 摘要 |
A processing unit, particularly for use in a vehicle, has a case with a removable cover 102a with some components 312-318 being mounted on a tray 308 which is movable to give access to other components 320,322,324. The tray may be carried by spring-loaded pivots 308. The unit may be part of a system (Fig 7) by which a fleet of courier vehicles are controlled by a central computer, the computer monitoring the position of each vehicle by means of the internet using a GPS device 314 in each unit and sending instructions to the vehicles on sites to visit. The application also discloses an input mouse (Figs 5a-d) with holes which receive two fingers and which does not need to be rolled on a surface. There is also disclosed a method of providing access to the internet, e.g. in a vehicle-borne unit, in which the fee is decreased according to the number of advertisements received, e.g. relating to places being passed on the route, increases. |
