| 摘要 |
PURPOSE:To secure the control for the rest terminal units through two units of terminal units as well as facilitate the alteration for the combination of the three lines, by securing the three-line structure for optional three units of terminals among a number of terminal units provided on the exclusive double core which is connected to the central control unit. CONSTITUTION:One unit of central control unit 1 is connected to a several terminal units 2, and the connection circuit is provided to board 1. And memory 10, binary counter 11, the 1st exclusive logic sum gates 14 plus shift registers 12 and 13 which deliver the signal output or supplies the return signal are provided to the connection circuit. Then the output of counter 11 is transmitted in the form of the address of unit 2 and also applied to memory 10. And the exclusive logic sum output of the No.n-bit of the output of counter 11 and the read/write signal of memory 10 is supplied to No.n-bit of memory 10. Then the output obtained through calculation of the logic sum of the external input signal and the output signal through the 2nd exclusive logic sum gate 21 is supplied to the input terminal of unit 2 featuring the address of X. Thus the control is secured through both terminal units 2 of the address of X+ or -2<n-1>. |
