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Recent content by abo_obayd

  1. abo_obayd

    digital circuit for RS 485 TO RS 232 CONVERSION

    rs485 to rs232 conversion use the sn75176 line driver.
  2. abo_obayd

    Dev C++ Serial Port Interfacing

    dev c++ serial port Hi, Check this out. https://abdelrahman101.spaces.live.com/ I hope its useful. Good Luck.
  3. abo_obayd

    serial port- 1Hz frequency from pin's of com port

    Re: serial port Hi There!, I think in your case u need to use the RTS pin. The EscapeCommFunction API enables u to do so. u can find it here: http://msdn.microsoft.com/en-us/library/aa363254(VS.85).aspx just use the RTS setting function and and sleep function. I hope that helped.:D
  4. abo_obayd

    ULN2003A and AT89C55 Problem

    Hi, Take care! When selecting ULN2003, choose the ULN2003AN. There's difference, i tried this beleive me! You will probably find it manufactured by TI. ULN2003AN. may be it's not the problem in your case, just keep it in consideration.
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