Modular notebook computer having a planar array of module bays

A modular computer comprising:

• a flat, rectangular case;
• a planar array of slot-like module bays opening to one or more edges of the case, the module bays for receiving and docking functional modules;
• a first multi-path electrical connector at the inboard end of each slot-like module bay, for engaging a mating second electrical connector on one of the functional modules when docked;
• bus communication means connecting to each multi-path electrical connector in each module bay in a parallel fashion, for providing address, data, control, and power communication between the module bays;
• a display for displaying output to a user;
• and
• substantially planar input means for accepting user input, the input means mounted to the upper surface of and substantially coplanar with the flat, rectangular case, and substantially overlying the planar array of module bays;
• each of the module bays comprising guide means for guiding one of the functional modules in docking and de-docking, retaining means for holding the functional module when docked, and user-operable expulsion means for disengaging a docked functional module.