Board layout.
Board layout.
This board uses a CD40192 pre-programmable counter to latch BCD data until parallel input is invoked and a pair of CD4075 quad 3-input OR gates to handle blanking and flashing the display.
Operates off of 5 to 15 volts.
Each input has its own on-board 1M pullup/pulldown resistor, so you do not need external resistors.
Price: $105 per board. Please email me to purchase. Checks only.