| 摘要 |
PROBLEM TO BE SOLVED: To provide an input/output device transmitting/receiving analog data in parallel to digital data transmission, having high reliability to the respective data transmissions, and facilitating the miniaturization and light-weighting. SOLUTION: An I/O card 11 is the input/output device for exchanging the data with a host H. The digital data transmission part 2 transmits the digital data D through a first data line DAT0 alone by 1 bit each in a first transmission mode, while transmits them through all the data lines DAT0-3 by 4 bits each in a second transmission mode. An analog data transmission part 3A transmits analog data A through a third data line DAT2 in parallel to the digital data transmission in the first transmission mode. Then, a second data line DAT1 and a forth data line DAT3 are connected to a ground line VSS to shield the third data line DAT2. COPYRIGHT: (C)2004,JPO
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