Thanks, Lee for the suggestion to substitute a 74C10 for a 74LS10.Sure; a 74HC10 would work as well as the 74C10. I was just thinking of a vintage chip that would have been Elf-period correct, without having to rewire it for a 4023.
A designer knows he has achieved perfection not when there is
nothing left to add, but when there is nothing left to take away.
-- Antoine de Saint Exupery
Lee Hart, 814 8th Ave N, Sartell MN 56377, www.sunrise-ev.com