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51單片機產(chǎn)生正弦波 
 
 
 
［ 作者：1kic       轉(zhuǎn)貼自：中華IC網(wǎng)     
 
 
減小字體 增大字體

ORG  00H
LJMP MAIN
ORG 0100H
MAIN:
    MOV DPTR,#sinTab
LOOP:
    CLR  A
    MOVC  A,@A+DPTR
    CJNE  A,#129,LOOP1
    AJMP   MAIN
LOOP1:
    MOV P3,A
    INC DPTR
    AJMP LOOP

sinTab:DB 128,132,137,141,146,150,154,159,163,167
       DB 171,176,180,184,188,191,195,199,203,206
       DB 210,213,216,219,222,225,228,231,233,236
       DB 238,240,242,244,246,247,249,250,251,252
       DB 253,254,254,255,255,255,255,255,254,254
       DB 253,252,251,250,249,247,246,244,242,240
       DB 238,236,233,231,228,225,222,219,216,213
       DB 210,206,203,198,195,192,188,184,180,176
       DB 172,167,163,159,155,150,146,141,137,133
       DB 128,124,119,115,111,106,102,97,93,89,85
       DB 81,77,73,69,65,61,57,54,50,47,43,40,37
       DB 34,31,28,25,23,20,18,16,14,12,10,9,7
       DB 6,5,4,3,2,2,1,1,1,1,1,2,2,3,4,5,6
       DB 7,9,10,12,14,16,18,20,23,25,28,30,33,36
       DB 40,43,46,50,53,57,60,64,68,72,76,80,84
       DB 88,93,97,101,106,110,114,119,123,128,129