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Logical equations of the simple signal-flow network shown in Figure 2.
| ==> rec3 ==> rec2 ==> rec1 !rec2 + rec1 ==> a rec2 ==> b rec3 ==> b a ==> c c + b ==> e d ==> c b ==> f !c ==> d f ==> tf3 d ==> tf1 e ==> tf2 tf3 ==> tf2 ==> tf1 ==> |
A "+" indicates an AND and a "!" a NOT operator.
