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How do the automobile ignition keys with chips embedded in them work?
auto.howstuffworks.com/car-driving-safety/safety-regulatory-devices/question282.htm
A friend of mine just bought a new car and it has a neat security feature. The ignition key has what looks like a microchip embedded in it. The owners manual says that without this chip, the engine either will not start or will start and then die immediately. How does this microchip on the key prevent the engine from starting?
How to Build a Radio
electronics.howstuffworks.com/how-to-build-a-radio.htm
Read on and learn how to build your own radio. Visit HowStuffWorks.com to learn more about how to build a radio.
How Dimmer Switches Work
home.howstuffworks.com/dimmer-switch.htm
A regular light switch takes care of off and on. A dimmer switch handles off, on and everything in between. Find out what this clever switch does with electrical current.
How Fuel Gauges Work
auto.howstuffworks.com/fuel-gauge.htm
Has your fuel gauge ever read "empty" when you know there are gallons left in your auto's tank? Learn all about how fuel gauges work and how to know when "Empty" means "No seriously, get gas."
Why does it say 1-bit Dual D/A converter on my CD player?
electronics.howstuffworks.com/question620.htm
Why does it say 1-bit Dual D/A converter on my CD player?
How is an electric guitar different from an acoustic guitar?
entertainment.howstuffworks.com/question701.htm
How is an electric guitar different from an acoustic guitar?
Inside an Electric Toaster
electronics.howstuffworks.com/gadgets/other-gadgets/electric-toaster-pictures.htm
Ever wonder what's inside your electric toaster? We've taken apart one for you to see, so take a look at these electric toaster pictures to get started.
How Electronic Gates Work
electronics.howstuffworks.com/digital-electronics.htm
Would you like to be able to build your own digital devices? Logic gates are the basis of digital electronics. Find out what these gates do and how you can use them to start building your own devices.
How Digital Clocks Work
electronics.howstuffworks.com/gadgets/clocks-watches/digital-clock.htm
When you need to know the time, it's about a 50-50 chance you'll turn to some LEDs to find out. Ever wonder what goes on inside a digital clock or wristwatch? Find out about this basic digital technology -- and learn how to create your own digital timekeeper.
How do the streetlights turn on automatically at night?
science.howstuffworks.com/environmental/energy/question363.htm
On the Flintstones, a small bird sits inside the light and turns it on every night before he goes to bed. In a modern streetlight, a small circuit replaces the bird.