computer brain teasers

29 Computer Riddles and Brain Teasers With Answers

Computers are full of riddle-friendly parts: keys that open no locks, a mouse with no tail and a brain made of silicon. These riddles cover the hardware and software we use every day and the pioneers who made computing possible.

Each riddle has a different answer, and the brain teasers at the end introduce binary numbers in a simple, kid-friendly way.

Easy Computer Riddles for Kids

  • I have a screen and a keyboard, and I can do millions of calculations a second. What am I? πŸ‘‰ A computer
  • I have keys but I cannot open a single lock. What am I? πŸ‘‰ A keyboard
  • I click and scroll, and I am named after a small animal. What am I? πŸ‘‰ A mouse
  • I am the screen that shows everything the computer is doing. What am I? πŸ‘‰ A monitor
  • I am a computer that folds in half and goes in your backpack. What am I? πŸ‘‰ A laptop
  • I am a thin, flat computer that you control by touching the screen. What am I? πŸ‘‰ A tablet
  • I am the brain of the computer that carries out instructions. What am I? πŸ‘‰ The CPU
  • I am short-term memory, and I forget everything when the power goes off. What am I? πŸ‘‰ RAM
  • I keep your files and photos safe even when the computer is off. What am I? πŸ‘‰ A hard drive
  • I am a tiny stick that carries files in your pocket. What am I? πŸ‘‰ A USB flash drive
  • I put words and pictures from the computer onto paper. What am I? πŸ‘‰ A printer
  • I connect you to the internet without any wires. What am I? πŸ‘‰ Wi-Fi
  • I am a small picture you click to open an app. What am I? πŸ‘‰ An icon
  • I am the little arrow you move around the screen. What am I? πŸ‘‰ The cursor
  • I am a harmful program that spreads from computer to computer. What am I? πŸ‘‰ A computer virus
  • I am a secret word that keeps your account safe. What am I? πŸ‘‰ A password
  • Press me together to copy text on most Windows computers. What am I? πŸ‘‰ Ctrl + C

Computer History Riddles

These riddles are based on real history. The note after each answer explains it.

  • In the 1840s I wrote what is often called the first computer program. Who am I? πŸ‘‰ Ada Lovelace
  • I designed a mechanical computer called the Analytical Engine in the 1830s. Who am I? πŸ‘‰ Charles Babbage
  • Computers store everything using only ones and zeros. What is this number system called? πŸ‘‰ Binary
  • Eight bits together make one of me. What am I? πŸ‘‰ A byte
  • I was one of the first electronic general-purpose computers, finished in 1945 and big enough to fill a room. What am I? πŸ‘‰ ENIAC
  • In 1947 a real moth was found stuck in a computer, making this word famous for a computer problem. What is it? πŸ‘‰ Bug
  • I was a British mathematician who helped crack secret codes in World War II and shaped modern computing. Who am I? πŸ‘‰ Alan Turing
  • The letters “www” in a web address stand for this. What is it? πŸ‘‰ World Wide Web
  • I invented the World Wide Web in 1989. Who am I? πŸ‘‰ Tim Berners-Lee

Funny Computer Riddle

  • Why was the computer so cold? πŸ‘‰ It left its Windows open

Computer Brain Teasers

  • One kilobyte is 1,024 bytes. How many bytes are in 3 kilobytes? πŸ‘‰ 3,072
  • What is the binary number 1010 as an ordinary number? πŸ‘‰ 10

Want more riddles? Browse our blog for more collections, and if you spot a mistake in any answer, let us know on our Contact page.

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