Overview
This lecture introduces the four main layers of a computer: hardware, operating system, software, and user, emphasizing the importance of understanding these layers for IT professionals.
The Four Layers of a Computer
- Computers consist of four main layers: hardware, operating system, software, and users.
- The hardware layer includes all physical components of a computer (e.g., laptops, monitors, keyboards).
- The operating system (OS) allows hardware from different manufacturers to work together and communicate.
- The software layer consists of the programs and applications humans interact with, such as web browsers and word processors.
- The user layer involves the human element, who interacts with the software and hardware.
Importance for IT Professionals
- IT professionals must understand how all computer layers interact to troubleshoot and resolve issues.
- The user layer is vital, as much of IT work involves helping users and addressing their concerns.
Upcoming Lessons
- You will learn the components of hardware and how to build a computer.
- The course will cover the major operating systems, their components, and navigation.
- You will learn how to install and use different types of software.
- Problem-solving skills will be developed for identifying and fixing real-world IT issues.
Key Terms & Definitions
- Hardware — Physical components of a computer system.
- Operating System (OS) — Software that enables communication between hardware and other software.
- Software — Applications and programs users interact with on a computer.
- User — The person operating or interacting with the computer.
Action Items / Next Steps
- Prepare for a detailed lesson on computer hardware and its components.
- Get ready to meet the next instructor, Devon Treetharen, for a hands-on hardware session.