Description: The system adopts the double integral circuit to direct the direct measurement of the dc voltage, and USES the analog switch to realize the contactless switch of the range. Of using common components of A/D converter analog part, using AT89S52 single chip microcomputer using software to realize digital counter display, at the same time using AT89S52 microcontroller programming realize dc voltmeter range of automatic conversion, automatic zero in the school, and liquid crystal display, etc. - The system will be dual - integral circuit of The direct measurement of DC voltage, using analog switches to your non - contact switch on The range. The A/D converter using common components constitute part of The analog part, using AT89S52 microcontroller with software, digital counting display while using AT89S52 microcontroller programmed DC voltage meter range automatic conversion, automatic zero, and The liquid crystal display.
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File list (Check if you may need any files):
数码显示电压表
..............\Backup Of 数字电压表.DBK
..............\Last Loaded 数字电压表.DBK
..............\Last Loaded 电压表.DBK
..............\数字电压
..............\数字电压.c
..............\数字电压.hex
..............\数字电压.lnp
..............\数字电压.LST
..............\数字电压.M51
..............\数字电压.OBJ
..............\数字电压.Opt
..............\数字电压.plg
..............\数字电压.Uv2
..............\数字电压2.c
..............\数字电压_Opt.Bak
..............\数字电压_Uv2.Bak
..............\数字电压表.DSN
..............\数字电压表.PWI
..............\数字电压表22
..............\............\STARTUP.A51
..............\............\数字电压22.c
..............\............\数字电压22.lnp
..............\............\数字电压22.LST
..............\............\数字电压22.M51
..............\............\数字电压22.Opt
..............\............\数字电压22.plg
..............\............\数字电压22.Uv2
..............\............\数字电压22_Opt.Bak
..............\............\数字电压22_Uv2.Bak
..............\数字电压表33
..............\............\33
..............\............\33.c
..............\............\33.lnp
..............\............\33.LST
..............\............\33.M51
..............\............\33.OBJ
..............\............\33.Opt
..............\............\33.plg
..............\............\33.Uv2
..............\............\33_Opt.Bak
..............\............\33_Uv2.Bak
..............\............\STARTUP.A51
..............\新建文件夹
..............\..........\11
..............\..........\11.hex
..............\..........\11.lnp
..............\..........\11.M51
..............\..........\11.Opt
..............\..........\11.plg
..............\..........\11.Uv2
..............\..........\11_Uv2.Bak
..............\..........\STARTUP.A51
..............\..........\数字电压.c
..............\..........\数字电压.LST
..............\..........\数字电压.OBJ
..............\..........\电压表.Opt
..............\..........\电压表.plg
..............\..........\电压表.Uv2
..............\电压表.DSN
..............\电压表.PWI
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