Here’s the free circuit which can program 89S series microcontroller through USB. It just needs an programmed AVR Atmeg8 microcontroller.
Even though the Atmega8 does not have an USB interface an software USB is created.
The software is created by Fischl, its available at :http://www.fischl....
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Tags: usb 8051 programmer, 8051 programmer, 8051 usb, usb programmer, free programmer