Designed 02005-004 PCB which is seemingly just a SOP8 breakout board, but also with a CH32V003J4M6, you can dedicated 2 pins to power/ground, 2 to input signals A and B, 2 to a mode setting 00/01/10/11, and then get different output signals on the 2 remaining pins: NOT A, NOT B, A OR B, A NOR B, A AND B, A NAND B, A XOR B, A XNOR B.