| 摘要 |
An apparatus provides audio instructions to a worker regarding job tasks to be performed and is adapted to be position at a location where the worker performs the tasks. A chart has a plurality of symbols related to the different job tasks and a user input assembly is associated with the symbols . The user input assembly is activated by the worker selecting one of the plurality of symbols which thereby produces an electrical signal indicating a selected symbol. A storage device contains a plurality of audio instructiona l messages corresponding to the plurality of symbols. An audio playback circui t is connected to the user input assembly and the storage device, and responds to the electrical signal by playing the audio instructional message that is associated with the selected symbol.
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