sbit????

[Eli]

guyz  i wanted to ask what is sbit?.whatt does this mean sbit rd= port^4;

[nikhiljain]

sbit is a type of  datatype similar to char, integer etc. It is used when we want to use a single bit. In the statement you have given above, it means you have created a bit type variable with name “rd” and whose value will be equal to 5th pin as referenced by the variable port. If port =P0 it means 5th pin of P0.

[Dexter]

The sbit type defines a bit within a special function register (SFR). It is used in one of the following ways:

sbit name = sfr-name ^ bit-position;

sbit name = sfr-address ^ bit-position;

sbit name = sbit-address;

sbit    LED2=P3^3;        //……meanspin 3 of port 3 is named as LED2 (USED IN PROGRAM LATER)
sbit    EN=P3^7;        //…….meanspin 7 of port 3 is named as EN (USED IN PROGRAM LATER)
sbit    RW=P3^6;        //……………….
sbit    RS=P3^5;        //……………….

[Author]

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