| 摘要 |
The invention provides an electronic advertising system (200) having an electronic advertising board (210) with a number of advertising slots (230). Each slot (230) can contain an advertisement (225). If all advertising slots (230) are full, one or more of advertising slots (230) can be cleared to accommodate a new advertisement, in accordance with a chosen criterion. The criterion may be selected from a range including date, price, category, products/services, location, or randomly. |
