Change the to a single digit (ideally COM1 to COM4 ).

USB-to-UART bridge. You must install these drivers first for the PC to recognize the programmer.

: Offers version 1.01, which is the most widely used version for Windows 10.

The software is prized for its reliability in professional and hobbyist electronics environments. Key features include:

It is optimized for the Atmel 89 series (AT89C51, AT89S52, etc.), Winbond, and SST microcontrollers, as well as various 24 and 93 series serial EEPROMs.