A version control system (VCS) is a software tool that helps developers manage changes to source code over time. VCSs allow developers to track changes, collaborate with others, and revert to previous versions of code. Examples of VCSs include Git and Subversion. Go to our website A microcontroller is a small computer on a single integrated circuit that can be used to control electronic devices. It consists of a central processing unit (CPU), memory, and input/output (I/O) ports. Microcontrollers are used in many applications, such as automobiles, appliances, and medical devices.