![]() One can decode letters to pins via a simple lookup table. Note that some letters such as K ( ), M ( ), V ( ), W ( ), X ( ), and Z ( ) are completely unrecognizable by most people and as such been left out of the table below. A typical 7-segment LED display component, with decimal point in a wide DIP-10 package. You must use the 74xx47 with a common anode 7-segment display (e.g. The 74xx47 chip is used to drive 7 segment display. Those representations varies from implementation to implementation and are not standardized by any standards organization. Using the 74xx47 BCD to Seven-segment display. In such places, 7-segment displays were extended to support letters. Representing Letters on a Seven-Segment Display, while highly discouraged, have been done mostly in low-end products such as cheap portable media players and many hobby projects.
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