I made this to test TTL logic gates utilizing ZIF sockets to test the ICs and all gates on one IC are tested at the same time. The only gates needing a jumper setting is NOR and XNOR. Now for the review of the PCB, beyond expectation! Was manufactured in about 13 hours then shipped. I am overjoyed with the excellent detail in manufacturing these as well the quality. This is my 3rd time using PCBWay and I will always get my boards made through this company. The company really cares about the quality of the boards they make.