The Visible Computer

Brush up on your knowledge of computer hardware and software with this course on PC components, OS types, super users and more.


  • Primary PC Components Video — 00:04:51
    • Mike takes you on a tour of the primary PC components, including the computer case, monitor and various peripherals such as the keyboard, mouse, speakers and more.

  • External Connections Video — 00:10:37
    • In this episode, Mike reviews the major external connections, including USB, network, power, video and audio.

  • Inside the PC Video — 00:07:48
    • Mike explores the inside of a PC case, pointing out the typical components you’ll find.

  • What is a Computer? Video — 00:06:55
    • What are the parts and the functions of a computer, and what do all these devices have in common?

  • What is an Operating System? Video — 00:09:23
    • We use computers to get work done via programs called applications, while the operating system supports the applications, hardware and storage devices inside our computers.

  • Users and Super Users Video — 00:05:22
    • Get to grips with the details of operating system security and superusers with this course.

  • Why Windows? Video — 00:07:46
    • Some Microsoft Windows features such as domains and active directory are so popular that even macOS and Linux systems have built-in tools to access Microsoft Windows networks.

  • Windows Editions and Versions Video — 00:11:35
    • Microsoft Windows has gone through many versions over the years, and the CompTIA A+ expects you to know the different versions and editions that Microsoft offers.

  • Touring the macOS Video — 00:06:27
    • Though macOS is completely different operating system from Windows, the two actually have a lot in common.

  • Touring Linux Video — 00:07:55
    • The free and popular Linux OS is taking over the world, and its customization via distributions is perfect for IoT devices, routers, servers and even desktops.


Course description

What, exactly, is a computer? Before you start working with sensitive equipment, it’s important to brush up on what it is and what you can expect from each piece. Refresh your knowledge of primary PC components, external connections, operating systems, us

Meet the author

Mike Meyers, affectionately called the “Alpha Geek,” is the industry’s leading authority on CompTIA certifications. He is the president and co-founder of Total Seminars, LLC, a provider of PC and network repair seminars, books, videos and courseware for thousands of organizations throughout the world. Mike has been involved in the computer and network repair industry since 1987 as a technician, instructor, author, consultant and speaker. He has sold over a million IT and certification books, including the best-selling CompTIA A+ Certification All-in-One Exam Guide and CompTIA Network+ Certification All-in-One Exam Guide. He has personally taught thousands of students, including U.S. senators, U.S. Supreme Court Justices, members of the United Nation, every branch of the U.S. Armed Forces, many branches of the Department of Justice, hundreds of corporate clients and academic students at every level.

Associated NICE Work Roles

All Infosec training maps directly to the NICE Workforce Framework for Cybersecurity to guide you from beginner to expert across 52 Work Roles.

  • All-Source Analyst
  • Mission Assessment Specialist
  • Exploitation Analyst

You're in good company


We use Infosec Skills to provide continuous training to our technicians and to prepare them for various certifications. Infosec Skills allows us to create personalized training programs that focus on each of our technicians’ particular roles and see their progress as they take courses. We also, recommend it to clients to make their IT support teams better.

Caleb Yankus


This has been utilized to bridge the skills gap across our cyber team and to aid them as they prepare for their various certifications. It also has provided a nice learning foundation for our various cyber team members to utilize as we continue to find ways for cross-utilization with operations while minimizing the downtime needed to ensure everyone’s knowledge is the same.

Daniel Simpson


We use Infosec Skills to provide base level knowledge for employees. We also use the services to provide in depth learning for employees as they encounter new technologies. If an employee is is assigned to a new project, we can rely on Infosec Skills to provide a rapid concentrated learning environment. This rapid concentrated learning positions our employees for success.

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Plans & pricing

  • Infosec Skills Personal

    $299 / year

    • 190+ role-guided learning paths (e.g., Ethical Hacking, Threat Hunting)
    • 100s of hands-on labs in cloud-hosted cyber ranges
    • Custom certification practice exams (e.g., CISSP, Security+)
    • Skill assessments
    • Infosec peer community support
  • Infosec Skills Teams

    $799 per license / year

    • Team administration and reporting
    • Dedicated client success manager
    • Single sign-on (SSO)
      Easily authenticate and manage your learners by connecting to any identity provider that supports the SAML 2.0 standard.
    • Integrations via API
      Retrieve training performance and engagement metrics and integrate learner data into your existing LMS or HRS.
    • 190+ role-guided learning paths and assessments (e.g., Incident Response)
    • 100s of hands-on labs in cloud-hosted cyber ranges
    • Create and assign custom learning paths
    • Custom certification practice exams (e.g., CISSP, CISA)
    • Optional upgrade: Guarantee team certification with live boot camps

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  • 1,400+ hands-on courses and labs
  • Certification practice exams
  • Skill assessments

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