51單晶片使用

4*4 鍵盤，在鍵盤上有8 個音階加上可將之前按過的聲音播放出來的

PLAY 鍵，還有一個CLEAR 鍵可將剛剛所錄的音階清除RAM 中的資料

以便做下一次的聲音錄製所用。輸出的部份主要是使用一個喇叭，在

按下按鍵的同時立即播放出所按下的音階，再搭配LCD 將按下的音階

使用音樂簡譜表現出來，每當增加一個音時並不清除之前的輸入，所

以在輸入完成時我們即可知道我們所有的輸入音階，讓使用者僅透過

LCD 即可知道輸入是否正確。而在輸入的同時，在程式的內部裡也有

一個變數紀錄聲音長度，可以在按下PLAY 鍵作播放時呈現出跟輸入

時一樣的結果-51 single-chip 4* 4 keypad on the keyboard, there are eight scales can be coupled with previously played over the sound out of the PLAY button, a CLEAR key can be recorded just scale to clear the data in RAM in order to do The next sound recording. Part of the output to a speaker, and immediately a key is pressed at the same time play out the scale of the press, and then with the LCD will press the scales the use of music notation shown, whenever you add a sound does not clear the previous input in the input is complete, so we can know all of our input scale, so that the user through the LCD alone can know the input is correct. Input at the same time, record the sound of a variable length, showing the same results with the input in the PLAY button is pressed during playback in the program' s internal