摘要 |
<p>The computer terminal (1) is used to record the transactions in shops, banks, restaurants, petrol stations etc. The system incorporates a card scanner, a display unit, a keyboard input, which feeds data processing circuits and communication interfaces. The data are transmitted to a remote station, which also returns the necessary information. A second display unit at the terminal, facing in the opposite direction, will show selected information separate from the first.</p> |