| 摘要 |
PURPOSE:To improve the integrating density on an IC by inputting m-set of inputs among n-set of inputs to an NAND circuit so as to form OR of input signals of opposite phase and obtaining a decoder output of AND between its output and remaining (n-m)-set of inputs. CONSTITUTION:An address coder circuit selects m-set of signals from n-set of address input signal lines and inputs the signals to an m-input NAND circuit 3 so as to form OR among input signals of opposite phase to the address input signals, and the logical sum and the remaining (n-m)-set of address input signals are inputted to an NOR circuit 4 of (n-m+1) inputs for obtaining a required decoder output signal. Thus, the integrating density on the integrated circuit is improved. |
