The PC software methods can include applications, operating systems, and device drivers for installed hardware components. The main components of information systems are computer hardware and software, databases, telecommunications systems, human resources, and procedures. It consists of the programs that instruct the hardware to perform tasks. A computer’s operating system are the systems that allows all the hardware and components to work together. PC software is often more expensive than the computer hardware that it runs on. Device drivers are a special type that lets the operating system and other programs work with your computer’s hardware. Hardware is the computer’s physical electronic and mechanical parts. If your PC is not working properly while you are working on it, it could be a problem with device drivers, hardware or software.