| 摘要 |
A monitor having a microcomputer for performing a serial peripheral interface (SPI) communication with a personal computer (PC) which can improve the communicability between the PC and the monitor. The monitor includes an interface using in common one communication type utilizing a serial clock and a serial data through a printer port of the PC and the other communication type utilizing RS232C through a COM port of the PC, and data is stored in or read out from the microcomputer through the interface. The interface performs an input/output of the serial data utilizing the printer port and the COM port.
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