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.