Willem programmer series motherboards, especially in computer technical services were those most commonly used to write the bios I’m sure he still is. Willem programmer Microchip PIC, MCS-51, Atmel AVR, 93Cxx, EPROM, EEPROM, FLASH, I2C etc.. Aiyar pcb circuit... Electronics Projects, Universal Programmer Willem Circuit PCB "programmer circuit, " Date 2019/08/02