A to start output red wire B to start output green wire Q to place input wire X to remove click buttons to change their state E to open/close options V to select option Mouse down to place option K to change size of new parts sorry if this is a bit complicated to understand "Not gates" and "outputs" only accept red input wires. Output expressor (the square) --- Expresses the input 1=1 0=0 Not gate--- inverts the input 1=0 0=1 And gate--- only on if both inputs are on 0+0=0 1+0=0 0+1=0 1+1=1 Or gate--- only what any input is on or both are on 0+0=0 1+0=1 0+1=1 1+1=1 Xor Gate--- only when the inputs are different 0+0=0 1+0=1 0+1=1 1+1=0 Nand gate--- only when both inputs together are not on 0+0=1 1+0=1 0+1=1 1+1=0 Nor gate--- only when both inputs are off 0+0=1 1+0=0 0+1=0 1+1=0 Nxor/Xnor gate--- only when the inputs are the same 0+0=1 1+0=0 0+1=0 1+1=1