this is a simple decoder made with the 18n8 Device 18n8 pin1 = 1 pin2 = 2 pin3 = 3 pin4 = 4 pin5 = 5 pin6 = 6 pin7 = 7 pin8 = 8 pin9 = 9 pin11 = 11 pin12 = 12 pin13 = 13 pin14 = 14 pin15 = 15 pin16 = 16 pin17 = 17 pin18 = 18 pin19 = 19 start pin15 /= pin1 * pin2; pin14 /= pin3 * pin4; pin13 /= pin5 * pin6; pin16 /= pin7 * pin8; pin17 /= pin9 * pin11; pin18 /= pin11 * pin12; pin19 /= pin1 * pin2; end