With the people's demand for portable instrument,embedded systems with independent computing processing capabilities have been widely used.This paper designs a Gold-immunochromatographicAssay(GICA)based on STM32microcontroller.COMS image sensor camera(ov5640)is used to acquire image which can display on the TFTLCD screen.The data and results are stored in SD card and data module of flash.Experimental results show that a c...