How do logic gates store information? - We explore how computer memory works with Dr. Steve "Heartbleed" Bagley Domino Addition -- Numberphile: http://youtu.be/lNuPy-r1GuQ YouTube's Secret Algorithm: http://youtu.be/BsCeNCVb-d8 Opening up the 30yr old Mac: http://youtu.be/wFJrHuSXnZM http://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: http://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. See the full list of Brady's video projects at: http://bit.ly/bradychannels

Colossus was one of the very first electronic, special purpose, computers and it was created almost two years earlier than the better known ENIAC. We visit Bletchley Park, home of the code breakers, and TNMoC, The National Museum of Computing. Professor Brailsford shows us the Colossus replica. The Most Difficult Program to Compute?: https://youtu.be/i7sm9dzFtEI Computer that Changed Everything: https://youtu.be/6LYRgrqJgDc Turing's Enigma Problem: https://www.youtube.com/playlist?list=PLzH6n4zXuckodsatCTEuxaygCHizMS0_I JPEG DCT (Discrete Cosine Transform): https://youtu.be/Q2aEzeMDHMA 5 Hole Paper Tape: https://youtu.be/JafQYA7vV6s http://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: http://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com

Just how did the team at Bletchley Park tackle the problem of decoding Enigma? In Part Two of our series on "The Real" Imitation Game, Professor Brailsford explains how they did it. Part One of this series: Turing's Enigma Problem: http://youtu.be/d2NWPG2gB_A Professor Brailsford's notes: http://bit.ly/enigmapart2 Numberphile on Enigma: http://youtu.be/G2_Q9FoD-oQ History of Undecidability: http://www.youtube.com/playlist?list=PLzH6n4zXuckpIQPv8hiHpJkSyv0fmXEYr Mainframes and the Unix Revolution: http://youtu.be/-rPPqm44xLs Turing Machines Explained: http://youtu.be/dNRDvLACg5Q EXTRA BITS - Banburismus Secret: http://youtu.be/f16iwjntggc http://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: http://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. See the full list of Brady's video projects at: http://bit.ly/bradychannels

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#multimeter #fluke #DIY This video compares a 10 dollar to a 170 dollar multimeter and shows the average person how to use the voltage, current, resistance, continuity, diode and battery options. I also cover safety concerns and run all tests simultaneous with both multimeters. I cover: Difference between 3 and 4 probe options on a multimeter Tests include: Voltage of Battery (DC) Voltage of Outlet (AC) -- discover something interesting in one of my outlets -- discover a SERIOUS hazard with the 10 dollar meter Current of a toaster (LIVE) Resistor test Metal tape test? Probing a circuit board Discovering schematic of a Emergency 4-prong switch Conductivity of water & salt (an electrolyte) Light bulb test (Same as a fuse test)