If you take a look in the libraries, you'll find that there are Johnson counters. Now, Johnson counters are somewhat like a shift register that clears itself when full. If you build a long enough Johnson counter, you can take the fist output stage to set a flipflop and pick one of your choice to reset it. Unlike a binary counter, length doesn't decrease performance, so you can go as long as you want, thereby creating an arbitrarily long interval. You might find that illuminating. I'd do this in schematic capture, but you could just as easily do it in VERILOG or VHDL. The faster your clock, the finer the resolution to which you can tune the output pulse. If you want, you can even

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