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Altera_Forum
Honored Contributor
13 years agoI'm not sure... this is the assignment:
You are to design a keyboard which plays any note on a single octave. The user interface will consist of eight push buttons and a breadboard circuit that interfaces to the DE1. The DE1 will use the push buttons as keyboard keys and play the appropriate note frequency on the octave. The note should be audible using a piezo buzzer speaker. Frequencies are given by Table 1.