• MCB251 evaluation board
    hi, i'm having troubles to connect the keil uVision3 V3.8 to the mcb251. i'm using the following configuration: IC1 -> AT89C51RE2 IC4 -> empty com1 , 38400 , using 24Mhz crystal RTS: active...
  • Operating Systems
    Hello, I seen the C251 Development Tools, as in large programs RTOS is required; in C251, which RTOS we have to use; Same as RTX51 (Full) or not available.
  • bit (and sbit) operation with == and != (bug?)
    I have a problem that i cannot solve. I need to compare two bit values. Lets say: bit Low = 0; bit High = 1; But I get some really strange results if I try to compare both of them: Low ...
  • Using AT24c02 for random read operation
    I had written a ASM code for Driving a EEPROM using P89V51RD2........... It works fine for sequential write n read.... But the problem is, tat it doesnt read for random..... Plz hep me in tat... I...
  • regarding error: non address/- constant variable in keil
    unsigned char card_num= "153845"; this particular code line has the error: non address/-constant variable. please tell me what is it that i am not getting it right??? please help me.....