Operating method of digital non disaster record board and that of apparatus

摘要

The present invention is to reduce the time and labor required for the management of accident-free record plates are commonly used in industry AVR AT90S8535 calculated to achieve accident-free hours and days without achieving management based on microprocessors and accident-free record relates to the digital edition of the cost to publish using the 7-segment light-emitting diode of the record sheet, particularly accident-free record digital edition In the circuit diagram, the bidirectional buffer (74HC245) (32) from the main control due AVR AT90S8535 microprocessor 29 and the real-time clock (RTC DS12887) (31) and the interface circuitry of the digital recording accident-free plate (10,20) AVR AT90S8535 microprocessor (29) of the A port and real-real-time clock (RTC DS12887) (31) of the address and data ports (Address / Data Port) between the position and, AVR AT90S8535 microprocessor-C port is a real-time clock ( RTC DS12887) and address and data ports (in the Address / Data port) directly connected with the circuit features and software operated by the timing diagram of to 31, by having a 7-segment light emitting diode is located below the semiconductor chip, PCB reducing the area of the substrate as well as the securing of the space for the design, allowing reduction of the production costs were.