Abstract: A modular data entry terminal includes a base unit and a plurality of I/O units, (such as a keyboard unit, a printer unit and display unit) which can be assembled to provide an integrated configuration or separated to provide a distributed configuration. The base unit has at least one recessed nesting area with at least one raised island thereon. Each I/O unit is provided with complementary locating devices which mate with the raised island when said unit is seated in the nesting area. The units are held in a positive manner that precludes movements resulting from vibrations (external or internal in the case of printers, etc.) or from bumps associated with normal operation of the units. Another nesting area is provided for anchoring pedestal-like devices. The terminal is readily converted from an integrated configuration to a distributed configuration by simply removing the I/O units from the base unit and locating them on suitable support surfaces relative to the base unit.

Abstract: A modular data entry terminal includes a base unit and a plurality of I/O units, (such as a keyboard unit, a printer unit and display unit) which can be assembled to provide an integrated configuration or separated to provide a distributed configuration. The base unit has at least one recessed nesting area with at least one raised island thereon. Each I/O unit is provided with complementary locating devices which mate with the raised island when said unit is seated in the nesting area. The units are held in a positive manner that precludes movements resulting from vibrations (external or internal in the case of printers, etc.) or from bumps associated with normal operation of the units.Another nesting area is provided for anchoring pedestal-like devices. The terminal is readily converted from an integrated configuration to a distributed configuration by simply removing the I/O units from the base unit and locating them on suitable support surfaces relative to the base unit.

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.