Abstract: An electrical interface for a scan engine includes a plurality of control pins including a range limiter mode pin, laser enable and scan enable pins, a signal output pin and a start-of scan indicator pin. Operation of the scan engine can thus be controlled to reduce power consumption and laser on-time as desired.

Abstract: A keyboard for cash registers and other registers of a type having long and short stroke keys (3) allows a structural reconfiguration for meeting various needs of customers. The keyboard, with all keys (3) thereof being at uniform key spacings, includes short-stroke rocker key assemblies (5) with short key moment arms (7) and a long switch moment arms (8) and long-stroke rocker key assemblies (4) with long key moment arms (7') and short switch moment arms (8'). When mounted, a key of a long-stroke rocker key assembly (4) is within a bifurcated end of a forked lever (9) of a respective adjacent long-stroke rocker key assembly. By making the long-stroke rocker key assemblies with forked levers in which keys of adjacent long-stroke rocker key assemblies are positioned, the keyboard can be adapted to meet customers desires with less expense.