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CH552G Development Board / Core Board 8051 USB Microcontroller CH551G / CH552G / CH554G WCH - AliExpress
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Waveshare RP2040-Tiny Development Board, Raspberry Pi Microcontroller Development Board, Based On Official RP2040 Dual Core Processor, USB Port Adapter Board Optional
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Amazon.com: 3pcs V3.0 328P Micro Controller Board Module USB Development Board Atmel 328P-AU 5V 16MHz CH340G : Electronics
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CH551 is a $1.80 USB Mini Development board based on the 8-bit C51 micro- controller - Electronics-Lab.com
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