How Computers and Gadgets Work
Discover what is really happening inside your phone, computer, and everyday gadgets without any confusing jargon. Learn how physical parts, invisible code, and invisible signals team up to make modern technology work.
Like Duolingo, but for How Computers and Gadgets Work. Tomo turns the whole topic into a game you play five minutes a day, until it actually sticks.
A short one: 12 levels across 2 sections, about 24 minutes end to end, roughly 5 days at five minutes a day. It moves through Inside the Machine and Connecting Code and the World. It starts from scratch.
Free forever · No credit card · iPhone & Android
Key ideas in How Computers and Gadgets Work
- Hardware consists of the physical, tangible parts of a computer or phone that you can touch
- Software refers to digital code, programs, and instructions stored electronically inside the device
- A device requires both physical parts to exist and programs to tell those parts what to do
- Physical electronic circuits require programmed instructions to perform meaningful tasks
- Without an operating system or software loaded into memory, hardware components sit idle after powering on
- Software acts as the decision-maker guiding physical hardware through every operation
- Input hardware captures physical phenomena (sound, light, touch) and converts them into digital electrical signals
- Microphones convert sound waves and touch sensors detect finger contact into data a processor understands
- Components that only emit light, sound, or provide passive structure are not input devices
- Output hardware takes digital signals processed by the computer and turns them into physical effects humans can perceive
- Screens, speakers, and vibration motors (haptics) are standard output components
- Sensors collect data (input), while power supplies and radios handle power and communication rather than direct human perception
- Smart gadgets universally follow the three-stage pattern: input, process, output
- An input sensor or button must register a physical event before any processing can occur
- The processor computes the instructions before triggering physical output components (like heating elements, motors, or displays)
- Microchips function by steering microscopic currents of electricity through etched channels
You've tried the other tabs
Thirty open tabs. Four facts you actually kept.
You watched. You nodded. By Sunday it was gone.
One answer, then back to scrolling.
Eight weeks. You meant to finish. You didn't.
Tomo gives How Computers and Gadgets Work the Duolingo treatment: levels, streaks, and quick quizzes that test what you just learned. That game loop is what the tabs above never had, so it's the one you actually finish.
Here's what playing it feels like
A real question from this course. Take your best guess.
What is software inside your phone or computer?
Get it right to open this lesson and 11 more in the app.
How to learn How Computers and Gadgets Work, step by step
Go in order. 12 short levels across 2 sections, about 24 minutes in all, five minutes a day.
- 1
Inside the Machine
- Hardware and Software: The Body and the Thoughts
- The Brain, the Memory, and Electricity
- 2
Connecting Code and the World
- How Code Tells Machines What to Do
- How Gadgets Talk Across the World
2 sections · 4 units · 12 levels. Built to play, not to enroll.
Questions about How Computers and Gadgets Work
How do I learn How Computers and Gadgets Work?
Go in order: start with Inside the Machine, then Connecting Code and the World. On Tomo that's 12 short levels, about 24 minutes in all, played five minutes a day. Start free and play the first level in under a minute.
Is there a Duolingo-style app for How Computers and Gadgets Work?
Yes. Tomo works like Duolingo: short daily lessons, streaks and quick quizzes. How Computers and Gadgets Work is one of its free courses, and you can type any other topic to get a course of your own.
Is the How Computers and Gadgets Work course free?
Yes. How Computers and Gadgets Work is playable on Tomo's free plan, which doesn't expire. No credit card, no waitlist. Download the app and start your first lesson.
How long does it take to learn How Computers and Gadgets Work?
12 levels across 2 sections, about 24 minutes of play in total. It's built for five minutes a day, so you finish it a little at a time instead of all at once.
Do I need any background to start How Computers and Gadgets Work?
No. It's pitched at a beginner level, so it starts where you are and builds up. If you can tap a phone, you can start.
Tomo is in ChatGPT
Tomo is also a ChatGPT plugin: the same playable courses, built and played inside your chat.
Add Tomo to ChatGPT- What to ask
- “Make me a Tomo course on black holes.” “Turn this chat into a Tomo course.”
- What you get
- Quick questions with instant feedback, hearts and stars, ready to play in about a minute.
- Where it goes
- No sign-up to start. Connect your Tomo account and your streak carries on in the app.
You pick the voice
How Computers and Gadgets Work is taught in the Bestie style: your friend who just gets it. Want a different feel? In the app you can spin up the same topic in any of Tomo's teaching styles. Same facts, totally different vibe.
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The Digital Architect: From Pixels to Packets
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Start How Computers and Gadgets Work today.
Download Tomo, search How Computers and Gadgets Work, and play your first lesson in under a minute.