This document discusses the differences between hardware, firmware, software, device drivers, application software, and system software. It defines each term and compares their key characteristics such as physical form, size, development languages, difficulty of updating, and examples. Hardware is physical while firmware and software are types of programs. Firmware controls hardware devices and is small in size. Software provides instructions and comes in various sizes. Application software runs at user request while system software acts as an interface between applications and hardware. Device drivers enable communication between operating systems and specific hardware devices.