Since TI' s TMS320VC54x DSP real-time processing capability, low power, high cost and other advantages, are widely used in a variety of embedded signal processing products, while the keyboard and display circuit as a part of human-computer interaction is indispensable in embedded systems The composition, this paper presents a new show based on TMS320VC5416 extended keyboard design, using the keyboard extended HD7279A chips, only with the DSP-2 IO ports and an interrupt, can achieve 64-key keyboard and 64-way LED control. The program simple and easy to implement, the actual use of good results.

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