| 摘要 |
PURPOSE:To precisely lay out wiring by reading the clock of a latch circuit from a latch circuit on the output side of a shift register and inserting an inverting means to each latch circuit to generate the read clock of the latch circuit in the preceding stage. CONSTITUTION:Read clocks of latch circuits 1 to 4 are transmitted to latch circuits in preceding stages through inverters 5 to 8 based on a clock 1. Read clocks A to D in respective states and outputs Q1 to Q4 of respective latch circuits have waveforms, and each of extents of delay of waveforms of clocks A to D corresponds to one inverter stage, and it does not matter that waveforms D and C are in the high level together in a certain period because the output of the latch circuit 1 is stable then, and the same may be the waveforms A and B. By this circuit constitution, the wiring is laid out without too much concern of wiring resistance. |
