19 AD&DA
........\EX19.1 LED显示AD转换结果
........\........................\AD_LED
........\........................\AD_LED.M51
........\........................\AD_LED.Opt
........\........................\AD_LED.Uv2
........\........................\AD_LED.hex
........\........................\AD_LED.plg
........\........................\AD_LED_Opt.Bak
........\........................\AD_LED_Uv2.Bak
........\........................\STARTUP.A51
........\........................\STARTUP.lst
........\........................\STARTUP.obj
........\........................\main.LST
........\........................\main.OBJ
........\........................\main.c
........\EX19.2 AD采集1602液晶显示
........\.........................\1602.LST
........\.........................\1602.OBJ
........\.........................\1602.c
........\.........................\AD_1602
........\.........................\AD_1602.M51
........\.........................\AD_1602.Opt
........\.........................\AD_1602.Uv2
........\.........................\AD_1602.hex
........\.........................\AD_1602.plg
........\.........................\AD_1602_Opt.Bak
........\.........................\AD_1602_Uv2.Bak
........\.........................\PCF8591.LST
........\.........................\PCF8591.OBJ
........\.........................\PCF8591.c
........\.........................\STARTUP.A51
........\.........................\STARTUP.lst
........\.........................\STARTUP.obj
........\.........................\main.LST
........\.........................\main.OBJ
........\.........................\main.c
........\EX19.3 DA输出固定模拟电压
........\.........................\DA
........\.........................\DA.M51
........\.........................\DA.Uv2.bak
........\.........................\DA.hex
........\.........................\DA.opt.bak
........\.........................\DA.plg
........\.........................\DA.uvopt
........\.........................\DA.uvproj
........\.........................\DA_Opt.Bak
........\.........................\DA_Uv2.Bak
........\.........................\STARTUP.A51
........\.........................\STARTUP.lst
........\.........................\STARTUP.obj
........\.........................\main.LST
........\.........................\main.OBJ
........\.........................\main.c
........\EX19.4 DA输出控制LED亮度变化
........\............................\DA_LED
........\............................\DA_LED.M51
........\............................\DA_LED.Uv2.bak
........\............................\DA_LED.opt.bak
........\............................\DA_LED.plg
........\............................\DA_LED.uvopt
........\............................\DA_LED.uvproj
........\............................\DA_LED_Opt.Bak
........\............................\DA_LED_Uv2.Bak
........\............................\DA_LED_uvopt.bak
........\............................\STARTUP.A51
........\............................\STARTUP.lst
........\............................\STARTUP.obj
........\............................\main.LST
........\............................\main.OBJ
........\............................\main.c