| 摘要 |
A device for providing a visual indication of the value of a variable of an electrical signal has a plurality, n, of driver circuits each having an input terminal for receiving the electrical signal and a plurality, m, of output terminals. Each driver circuit is operable in a mode in which it provides an output signal at its ith output terminal when the value of the variable lies in a range corresponding to the ith increment on a scale of m increments. The position of the scale of m increments associated with each circuit is adjustable so that the scale of m increment associated with the jth driver circuit overlaps by ((m-1+(n-1)/n) increments the scale of m increments associated with at least one of the j-1)th circuit and the (j+1)th circuit. Light emitting elements, arranged in an interdigitated grand linear array, are coupled to respective output terminals of the driver circuits.
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