i was download the code from internet
the program is start with these lines --------------------------------
sfr P1 = 0x90; /* SFR for P1 */
sbit P1_0 = P1^0; /* SFR for P1.0 */ sbit P1_1 = P1^1; /* SFR for P1.1 */
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what is the function of this code
Refer to the following:
Jon