| 摘要 |
A numeric display, comprising a matrix having nominally m columns by n rows, a plurality of light emitting diodes populating at least some of the matrix, first and second void areas within the matrix wherein respective first and second subsets of the m columns by the n rows are devoid of light emitting diodes, and a controller coupled to the plurality of light emitting diodes and configured to select a one of a plurality of fonts. The controller is further configured to energize a third variable subset of the m columns by the n rows for at least one of a set of cardinal numerals, wherein the third variable subset is chosen from the one of the plurality of fonts.
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