Barbaros ASUROGLU wrote: > > Hello to everyone, > > Has anyone used the programmer com84 to program a pic16c84 from RS232 without > the need to external supply?I am suspicious about powering it from rs232.Is > the voltage in rs232 enough to supply vpp? > > Thanks alot for answering.. > > Regards. > > Barbaros Yes and no, it depends on what kind of serial card your PC has. Older cards have trouble with that serial programmer. Good luck.