/* Implements   a . (not b) + (not a) . b */

Switch 1a sw_0 ONE; /* a */
Not    2b sw_0 out0;
Switch 5a sw_1 ONE; /* b */
Not    6b sw_1 out1;
And    1d sw_0 out1 out00;
And    5d out0 sw_1 out11;
Or     3e out00 out11 out;
Probe  3f out;
