Digital display 1) 8 keyboard (the realization of tenor 1 to 7 and a total of eight high tone), 8-bit LED digital tube can remember and display the most recent eight audio press, press out with the audio speakers. 8255/8155 require the expansion of the use of keyboard and display part of the achievement. 2) a long time (for example, 2s) by pressing a button (which can be their own definition), can play a song.

电子琴
......\Last Loaded 课程.DBK
......\程序
......\....\8255.txt
......\....\8255_1.txt
......\....\config.h
......\....\dianziqin
......\....\dianziqin.hex
......\....\dianziqin.lnp
......\....\dianziqin.M51
......\....\dianziqin.Opt
......\....\dianziqin.plg
......\....\dianziqin.Uv2
......\....\dianziqin_Opt.Bak
......\....\dianziqin_Uv2.Bak
......\....\qin.c
......\....\qin.LST
......\....\qin.OBJ
......\....\STARTUP.A51
......\....\STARTUP.LST
......\....\STARTUP.OBJ
......\课程.DSN
......\课程.PWI

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