| 摘要 |
PURPOSE:To freely and easily replace a keyboard different in kind by adding the kind deciding information of the keyboard during the information is inputted from the keyboard to a CPU. CONSTITUTION:A keyboard 1 to provide a wire 8 for deciding the kind of a keyboard at an information input signal line 7 inputted from the keyboard 1 to a CPU 2 is used for the keyboard 1. Consequently, a connecting connector, etc., of, for example, the information input signal line 7 are provided at the printing substrate of the CPU 2 and the keyboard 1 can be easily replaced with the work only to detach and attach the information input signal line 7. Thus, an operator can replace the keyboard to the familiar keyboard, can work and the work efficiency is improved.
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