Connecting pin. Lf353 connects pins in proteus, and moves the mouse to the pin of the component to be connected. When the cursor changes to a green pencil style, click the left mouse button, move the mouse to locate the endpoint of the target component pin, or click the connection on the target connector. Proteus software is an EDA tool software released by LabCenterElectronics Company in Britain (the general agent of this software in China is Guangzhou Feng Biao Electronic Technology Co., Ltd.).