Driving Relay from Parallel Port (LPT)
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Driving relay from parallel port (LPT) using Delphi or Lazarus component
Driving relay from parallel port (LPT) using Delphi or Lazarus component
SDownldr.exe is a software to program a AT89S51/AT89S52 serially through the parallel port. This Software is included in the Microcontroller Project Circuit diagram for this ISP downloader is as follow: The Serial Downloader circuit above using the power supply from the parallel port. However, not all parallel port capable of providing enough current for this […]