| 摘要 |
<p>A computer system for calculating, and displaying in real time, wages earned by piece workers comprises a plurality of slave data retrieval units, SDRUs (8) which are associated with respective work stations at which workers are working e.g. on sewing machines. A group of SDRUs is connected to by a master data retrieval unit MDRU (6). Each MDRU is connected to a concentrator (4) and these concentrators are connected together in a network. Each MDRU (6) polls its group of SDRUs sequentially and acquires data from which earnings may be calculated and stores the data in RAM. The data is acquired by the concentrators (4) which sequentially poll the MDRUs (6) and calculate earnings data which is transmitted back to displays on the individual SDRUs (8).</p> |
