I need to control 6 inputs on a circuit, over a cycle of 3 steps. I can do it by using 6 digital outputs, but I wondered if any electronics guru's (I'm a newbie) could advise on how to reduce the output count with some clever logic trickery. Transistors would be nice, but there's a maplins nearby, so I can purchase some 74xx or whatever if needed. The required states are :
| Cycle | a1 | a2 | b1 | b2 | c1 | c2 | | - | - | - | - | - | - | - | | T1 | 1 | 0 | 0 | 1 | 0 | 0 | | T2 | 0 | 0 | 1 | 0 | 0 | 1 | | T3 | 0 | 1 | 0 | 0 | 1 | 0 |
Obviously, it would be nice to avoid using 6 digital outputs - any bright sparks?