面向51单片机的Keil uVision4基本数据类型简介

表1 Keil uVision4面向51单片机的基本数据类型各种属性一览表

qTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTrU类  别U  数  据  类  型  U长 度U           值  域            UUTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTUU      Uunsigned char     U1字节U0～255                       UU字符型Usigned char       U1字节U-128～+127                   UU      Uchar              U1字节U-128～+127                   UUTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTUU      Uunsigned short intU2字节U0～65535                     UU      Usigned short int  U2字节U-32768～+32767               UU      Ushort int         U2字节U-32768～+32767               UU      UTTTTTTTTTTTTTTTTTTTTTTTTTTTTUU      Uunsigned short    U2字节U0～65535                     UU整  型Usigned short      U2字节U-32768～+32767               UU      Ushort             U2字节U-32768～+32767               UU      UTTTTTTTTTTTTTTTTTTTTTTTTTTTTUU      Uunsigned int      U2字节U0～65535                     UU      Usigned int        U2字节U-32768～+32767               UU      Uint               U2字节U-32768～+32767               UUTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTUU      Uunsigned long int U4字节U0～4294967295                UU      Usigned long int   U4字节U-2147483648～+2147483647     UU      Ulong int          U4字节U-2147483648～+2147483647     UU长整型UTTTTTTTTTTTTTTTTTTTTTTTTTTTTUU      Uunsigned long     U4字节U0～4294967295                UU      Usigned long       U4字节U-2147483648～+2147483647     UU      Ulong              U4字节U-2147483648～+2147483647     UUTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTUU      Ufloat             U4字节U±1.75494E-38～±3.402823E+38UU浮点型Udouble            U4字节U±1.75494E-38～±3.402823E+38UUTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTUU      Ubit               U1位  U0，1                         UU位  型Usbit              U1位  U0，1                         UUTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTUU      Usbit              U1位  U0，1                         UUSFR 型Usfr               U1字节U0～255                       UU      Usfr16             U2字节U0～65535                     UtTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTs