A digitally controlled series-organized circuit system, said digitally controlled series-organized circuit system comprising: a power supply for supplying electrical power; an output line ; a line driver circuit , said line driver circuit being configured to: receive power from said power supply ; receive digital control data from a controller system ; drive said output line with a DC current; and modulate said digital control data onto said DC current; and more than one individually controlled unit (250-1, 250-2, 250-N) coupled in a series arrangement to said output line , each of said individually controlled unit (250-1, 250-2, 250-N) comprising a local capacitor , and each of said individually controlled unit (250-1, 250-2, 250-N) being configured to: demodulate said digital control data from said DC current on said output line ; and control, based on said digital control data , at least one output circuit in said individually controlled unit (250-1, 250-2, 250-N); and characterized in that each of said individually controlled unit (250-1, 250-2, 250-N) is further configured to: periodically draw operating power from said DC current on said output line to charge the local capacitor of said individually controlled unit (250-1, 250-2, 250-N), the local capacitor being configured to power said individually controlled unit (250-1, 250-2, 250-N); and shunt said DC current directly from said output line back onto said output line when sufficient charge exists in said local capacitor . a power supply for supplying electrical power; an output line ; a line driver circuit , said line driver circuit being configured to: receive power from said power supply ; receive digital control data from a controller system ; drive said output line with a DC current; and modulate said digital control data onto said DC current; and receive power from said power supply ; receive digital control data from a controller system ; drive said output line with a DC current; and modulate said digital control data onto said DC current; and more than one individually controlled unit (250-1, 250-2, 250-N) coupled in a series arrangement to said output line , each of said individually controlled unit (250-1, 250-2, 250-N) comprising a local capacitor , and each of said individually controlled unit (250-1, 250-2, 250-N) being configured to: demodulate said digital control data from said DC current on said output line ; and control, based on said digital control data , at least one output circuit in said individually controlled unit (250-1, 250-2, 250-N); and characterized in that each of said individually controlled unit (250-1, 250-2, 250-N) is further configured to: periodically draw operating power from said DC current on said output line to charge the local capacitor of said individually controlled unit (250-1, 250-2, 250-N), the local capacitor being configured to power said individually controlled unit (250-1, 250-2, 250-N); and shunt said DC current directly from said output line back onto said output line when sufficient charge exists in said local capacitor . demodulate said digital control data from said DC current on said output line ; and control, based on said digital control data , at least one output circuit in said individually controlled unit (250-1, 250-2, 250-N); and characterized in that each of said individually controlled unit (250-1, 250-2, 250-N) is further configured to: periodically draw operating power from said DC current on said output line to charge the local capacitor of said individually controlled unit (250-1, 250-2, 250-N), the local capacitor being configured to power said individually controlled unit (250-1, 250-2, 250-N); and shunt said DC current directly from said output line back onto said output line when sufficient charge exists in said local capacitor . <EOS>