基于stm32f103及电阻式触摸屏开发的画板程序，开机后首先进行触摸校准，进入画板界面后可选择画笔粗细、选择颜色，附带橡皮擦功能。(Based on STM32F103 and resistive touch screen, the sketchpad program is developed. After touchdown, the touch is first calibrated. After entering the sketchpad interface, you can choo