case 0:LS138A=0; LS138B=0; LS138C=0; break; case 1:LS138A=1; LS138B=0; LS138C=0; break; case 2:LS138A=0; LS138B=1; LS138C=0; break; case 3:LS138A=1; LS138B=1; LS138C=0; break; case 4:LS138A=0; LS138B=0; LS138C=1; break; case 5:LS138A=1; LS138B=0; LS138C=1; break; case 6:LS138A=0; LS138B=1; LS138C=1; break; case 7:LS138A=1; LS138B=1; LS138C=1; break;