parallel/serial port programming

[giddy]

I doing a project that requires computer port programming .Im stack any body with any info?
quote:"Research, is a blind man in dark room looking for a black cat that is probably not there"

 

[Nigel Goodwin]

I doing a project that requires computer port programming .Im stack any body with any info?
quote:"Research, is a blind man in dark room looking for a black cat that is probably not there"

'Generally' programming devices (like PIC's or AVR's) is a serial process, so the parallel port just uses a few pins to generate a syncronous serial protocol. To make matters worse, most 'serial port' programmers don't actually use the serial port - they usually use a few of the handshake lines, and generate the syncronous serial protocol in exactly the same way as the parallel port programmers do.

More expensive (true serial) programmers have a processor on board (like the PicStart+), this receives standard serial data from the PC serial port and does all the programming it self.