Importance

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Abstract

An improved hand-held computer terminal for use in the route distribution industries. The housing of the terminal provides a keypad and sixteen line display and is molded to fit the grip of the user. Circuit boards within the terminal housing arc modular in arrangement and are connected by pin and socket and compressible interconnect strip connectors. High speed data communication between the device and external devices is available. A battery power sensing circuit disables random access memory when low power is sensed and interrupt circuitry permits the terminal to enter an inactive, sleep mode when keypad activity is absent for a predetermined period. A sensing circuit senses the presence of rechargeable batteries. Electrostatic discharge protection is provided by circuit devices integrated into signal carrying lines and no conductive sheathing is required. A removable end cap allows introduction of auxiliary memory cards or the like into a slot under the end cap. A mylar strip is removably positioned between an on board lithium backup battery and its associated circuitry. The mylar strip may be removed by the user when commencement of use occurs. A modular end cap adapts the terminal for radio frequency communication and the like.

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First Claim