Abstract: A methodology for packaging and grounding electronic devices including distributive data processing systems wherein a Main Processing Unit (MPU) and power supply are packaged within a common housing. The MPU and other electrical components are placed on a common support card or substrate. The substrate is provided with plugs for mating with the power supply and I/O connectors for mating with devices which may be remotely attached thereto. Each connector is fitted with a shielded receptacle that coacts with the common housing to provide EMC shielding for the MPU and other electrical components. The packaging is such that an untrained person may replace the card without compromising the integrity of the EMC shield.

Abstract: A printed circuit board holder includes an integral, generally rectangular board receptacle which is pivotally supported above the base of a data processing device by spaced cradle posts. The receptacle can be pivoted from a normal position through an angle of approximately 90.degree. to a service position in which the receptacle bottom wall is nearly perpendicular to the base. An integral latch mechanism keeps the holder in the normal position until the latch is manually released. Multiple pin connector boards and stiffener plates are secured to the receptacle by integral latches.

Abstract: A data entry terminal has a base unit and keyboard unit which can be assembled to provide an integrated configuration or separated to provide a distributed configuration. No tools are required. The base unit has a recess with vertical guides and a protruding electrical connector providing an input path to the device electronics. The keyboard unit has complementary guides and a connector which mates with the base unit connector when the keyboard unit is slipped into place along the guides. The terminal is readily converted from an integrated configuration to a distributed configuration by removing the keyboard unit from the base unit, adding an auxiliary cable to carry signals between the keyboard unit connector and the base unit connector and concealing the base unit recess with a filler panel having the same guide structure as the keyboard unit.