A first value is stored in a first memory cell. A first component output current, from a first electronic component, is provided based on the stored first value, wherein the first component output current is proportional to a place value represented by the first value. A second value is stored in a second memory cell. A second component output current, from a second electronic component, is provided based on the stored second value, wherein the second component output current is proportional to a place value represented by the second value. A combined current of at least the first component output current and the second component output current is detected, wherein the combined current corresponds to a sum of at least the first value and the second value.