Module 1 — Introduction to Computers
Understand the Machine Before You Work with It
Professional IT Foundations — Level I — Digital Foundations
A professional IT journey begins with understanding the technology itself.
Before learning how to troubleshoot a computer, configure an operating system, build a network, or provide technical support, you need to understand what a computer is, how it works, and how its fundamental elements work together.
Introduction to Computers establishes the first technical foundation of Professional IT Foundations.
This module introduces the essential concepts behind modern computing and helps learners develop a clear mental model of a computer as a complete system.
You will begin to understand not only what a computer does, but also how and why it does it.
What You Will Learn
Throughout this module, you will develop an understanding of:
- What computers are and what they are designed to do
- How computers process and represent information
- The relationship between hardware and software
- The fundamental stages of computer operation
- Different types of computers and computing devices
- How computers are used in everyday life and professional environments
- Essential computer terminology
- How the major elements of a computer function together as a system
The objective is not to memorize a collection of definitions.
The objective is to build a solid conceptual foundation that will make the technical subjects that follow easier to understand.
Module 1 Lessons
This module contains 8 core lessons.
Each lesson introduces an essential concept and progressively builds your understanding of computers.
Lesson 1 — What Is a Computer?
Start with the most fundamental question.
Before exploring components, operating systems, or technical processes, we must first understand what a computer actually is.
This lesson establishes the fundamental definition of a computer and introduces the basic characteristics that distinguish computers from other electronic devices.
Lesson 2 — How Computers Process Information
Discover what happens inside a computer.
Computers receive information, process it, produce results, and store information for future use.
This lesson introduces the fundamental process through which computers transform input into useful output and establishes the foundation for understanding computer operation.
Lesson 3 — Hardware vs. Software
Understand the two fundamental sides of computing.
Every computer system depends on both physical components and instructions that tell those components what to do.
This lesson introduces the distinction between hardware and software and explains how these two elements work together to make a computer system useful.
Lesson 4 — Input, Processing, Output, and Storage
Understand the fundamental cycle of computing.
Computing can be understood through four fundamental functions: input, processing, output, and storage.
This lesson introduces these functions and shows how they work together to transform information into useful results.
Lesson 5 — Types of Computers
Discover the many forms of modern computing.
Computers are not limited to traditional desktop PCs.
They exist in many forms, sizes, and environments, serving different purposes and users.
This lesson introduces the major categories of computers and helps learners recognize how different computing devices are designed for different requirements.
Lesson 6 — Computers in Everyday Life
See how deeply computers are connected to modern life.
Computers are part of nearly every modern environment, from homes and schools to businesses, healthcare, transportation, communication, entertainment, and industry.
This lesson explores the role computers play in everyday activities and professional environments.
→ Explore Lesson 6
Lesson 7 — Basic Computer Terminology
Learn the language of computing.
Every profession has its own vocabulary, and IT is no exception.
Understanding common computer terminology allows professionals to communicate accurately, understand technical information, and continue learning more advanced concepts.
This lesson introduces essential terminology that will appear throughout the Professional IT Foundations program.
→ Explore Lesson 7
Lesson 8 — Understanding the Computer as a System
Bring everything together.
A computer is not simply a collection of individual components.
It is a system in which hardware, software, data, users, and processes work together.
This lesson brings together the fundamental concepts introduced throughout the module and establishes a complete mental model of the computer as an integrated system.
→ Explore Lesson 8
What Comes Next
Completing Introduction to Computers gives you the conceptual foundation needed to begin exploring one of the most important elements of every computer system: the operating system.
Module 2 — Operating Systems Fundamentals
You will move from understanding what a computer is to understanding the software environment that allows people and applications to interact with the computer.
→ Explore Module 2