| 摘要 |
<p>A portable sensing device for reading date codes comprises a thin, generally planar housing (10) of polygonal shape having a light source (28) and light sensor (30, 32, 34) at one of the corners thereof for reading data codes. The code reader contains a memory (42) not only capable of storing the sensed data codes for future access, but capable of being programmed. A multipurpose battery charger is provided which is capable of charging a plurality of the code readers simultaneously while receiving outputs from their memories (28) and inputting commands or programming. Although the output from each code reader is performed optically through coded pulsing of the light source (28), the input occurs through the battery charger terminals (64, 66), the charging current being delivered in coded pulses. Outputs from a plurality of code readers placed in a single charger unit occur sequentially in accordance with coded commands given by the charger. </p> |
