A plurality of data entry terminals is connected to a microprocessor system which analyzes terminal data for display on a production CRT, intended to be located in a restaurant kitchen. Food items entered on the terminal are displayed with a corresponding symbol denoting a work station where such food...http://www.google.com.hk/patents/US4388689?utm_source=gb-gplus-share專利 US4388689 - Restaurant video display system
