| 摘要 |
1453741 Selective signalling PERFECT LIBERTY 26 Feb 1974 [2 April 1973] 8739/74 Heading G4H Equipment for collecting data concerning individual people (e.g. medical data) into a data collecting device, comprises a data keyboard, an I.D. card reader controlling a display for verification purposes, a transmission switch (e.g. manual) for causing transfer of the keyed data to the data collecting device, a printer for printing out entered information and means to indicate error upon receipt of an error signal from the data collecting device. The keys have lamps for indicating the entered data. Transfer to the data collecting device is achieved by sending an interrupt signal to it, to which it responds with read-out pulses to obtain the data, sending an end signal after receiving the data. Data is not transferred unless all the required data has been entered. |
