Computer Hardware and Software

This course introduces the physical and logical building blocks of modern computing. Learners identify basic hardware components such as the central processing unit, memory, and storage devices, and explain how these parts process and hold information. The module then shifts to software, covering how operating systems manage hardware resources and how applications run on top of that layer. A hands-on segment guides you through assembling a basic computer from individual parts, reinforcing the connection between physical components and the software that controls them.

What sets this course apart is its focus on the interplay between hardware and software rather than treating them as separate topics. You will explore how software instructions translate into electrical signals that move data across a motherboard, and how operating systems mediate between programs and the physical machine. The syllabus also includes networking fundamentals, explaining how computers communicate over the Internet using protocols such as TCP/IP and the OSI model.

By the end of the course you will be able to name the core hardware pieces of a personal computer, describe the role of system software in coordinating those pieces, and assemble a functional computer from components. You will also understand how data travels across a network and what protocols keep that traffic reliable and secure. These skills map directly to entry-level IT support roles, where professionals routinely install hardware, troubleshoot operating-system issues, and configure basic network connections.

The course is designed for beginners; no prior experience with computer architecture or networking is assumed. The University of California, Irvine delivers the content through video lectures, readings, and ungraded practice exercises. A certificate is available for a separate fee; the course materials themselves can be audited for free. Learners who find the pace too quick may want to supplement with an introductory operating-system course, while those who already understand basic networking may find the coverage too foundational.

Free options include the Codecademy Introduction to IT course and the free Coursera audit track. For a broader view of networking topics, the Udemy Introduction to networking for complete beginners and How does the Internet work & Networking Crash Course both offer video-led introductions with lifetime access after purchase.