https://padlet.com/StemGod/fhg52pta7vc2bu0z History Of Computers Timeline Arjun Dammalapati Tech Apps Period: 5b en-us 2020-05-26 17:14:55 UTC 2026-01-29 06:00:24 UTC hello@padlet.com https://upload.wikimedia.org/wikipedia/commons/thumb/9/9f/DEC_VT100_terminal_transparent.png/1200px-DEC_VT100_terminal_transparent.png StemGod https://padlet.com/StemGod/fhg52pta7vc2bu0z/wish/595302399 Beads on rods to count and calculate]]> 2020-05-26 17:18:18 UTC https://padlet.com/StemGod/fhg52pta7vc2bu0z/wish/595302399 StemGod https://padlet.com/StemGod/fhg52pta7vc2bu0z/wish/595305871 Based on Napier's rules for logarithms]]> 2020-05-26 17:19:56 UTC https://padlet.com/StemGod/fhg52pta7vc2bu0z/wish/595305871 StemGod https://padlet.com/StemGod/fhg52pta7vc2bu0z/wish/595311428 First stored program - Metal Cards]]> 2020-05-26 17:22:42 UTC https://padlet.com/StemGod/fhg52pta7vc2bu0z/wish/595311428 StemGod https://padlet.com/StemGod/fhg52pta7vc2bu0z/wish/597636025 -- Difference Engine
-- Analytical Engine - Stored number on metal punch cards, accurate to 6 decimal places, powered by steam]]> 2020-05-27 18:39:54 UTC https://padlet.com/StemGod/fhg52pta7vc2bu0z/wish/597636025 StemGod https://padlet.com/StemGod/fhg52pta7vc2bu0z/wish/597645096 1st generation computers used Vacuum Tubes with no air inside to protect cir]]> 2020-05-27 18:44:25 UTC https://padlet.com/StemGod/fhg52pta7vc2bu0z/wish/597645096 StemGod https://padlet.com/StemGod/fhg52pta7vc2bu0z/wish/597668802 Moth stuck in relay switch. Grace Hopper called it debugging a computer.]]> 2020-05-27 18:56:22 UTC https://padlet.com/StemGod/fhg52pta7vc2bu0z/wish/597668802 StemGod https://padlet.com/StemGod/fhg52pta7vc2bu0z/wish/597672663 Used silicon, won Nobel Peace Prize, on-off switch]]> 2020-05-27 18:58:27 UTC https://padlet.com/StemGod/fhg52pta7vc2bu0z/wish/597672663 StemGod https://padlet.com/StemGod/fhg52pta7vc2bu0z/wish/597677838 First fully electronic digital computer built in the US. It was created at the University of Pennsylvania, weighed 30 tons, contained 18,000 vacuum tubes, and cost $487,000 to build.]]> 2020-05-27 19:01:22 UTC https://padlet.com/StemGod/fhg52pta7vc2bu0z/wish/597677838 StemGod https://padlet.com/StemGod/fhg52pta7vc2bu0z/wish/599540120 2nd generation computers replaced vacuum tubes with transistors]]> 2020-05-28 16:23:17 UTC https://padlet.com/StemGod/fhg52pta7vc2bu0z/wish/599540120 StemGod https://padlet.com/StemGod/fhg52pta7vc2bu0z/wish/599545548 3rd Generation computers used intergrated chips]]> 2020-05-28 16:25:42 UTC https://padlet.com/StemGod/fhg52pta7vc2bu0z/wish/599545548 StemGod https://padlet.com/StemGod/fhg52pta7vc2bu0z/wish/599548406 4th Generation computers used microchips]]> 2020-05-28 16:27:04 UTC https://padlet.com/StemGod/fhg52pta7vc2bu0z/wish/599548406