https://padlet.com/marcus_lin_362/uf9o8y6k0txw6zth 3000 BC - 21st Century en-us 2021-04-09 20:04:21 UTC 2021-04-30 18:12:32 UTC hello@padlet.com marcus_lin_362 https://padlet.com/marcus_lin_362/uf9o8y6k0txw6zth/wish/1401430655 Beads on a rod to count an calculate]]> 2021-04-09 20:08:04 UTC https://padlet.com/marcus_lin_362/uf9o8y6k0txw6zth/wish/1401430655 marcus_lin_362 https://padlet.com/marcus_lin_362/uf9o8y6k0txw6zth/wish/1401438985 Based on Napier's rules for logarithms]]> 2021-04-09 20:11:26 UTC https://padlet.com/marcus_lin_362/uf9o8y6k0txw6zth/wish/1401438985 marcus_lin_362 https://padlet.com/marcus_lin_362/uf9o8y6k0txw6zth/wish/1401448918 First stored program-metal card]]> 2021-04-09 20:15:35 UTC https://padlet.com/marcus_lin_362/uf9o8y6k0txw6zth/wish/1401448918 marcus_lin_362 https://padlet.com/marcus_lin_362/uf9o8y6k0txw6zth/wish/1401454347 Different Engine]]> 2021-04-09 20:17:50 UTC https://padlet.com/marcus_lin_362/uf9o8y6k0txw6zth/wish/1401454347 marcus_lin_362 https://padlet.com/marcus_lin_362/uf9o8y6k0txw6zth/wish/1401459961 1st Generation computers used Vacuum Tubes with no air inside to protect circuity ]]> 2021-04-09 20:20:18 UTC https://padlet.com/marcus_lin_362/uf9o8y6k0txw6zth/wish/1401459961 marcus_lin_362 https://padlet.com/marcus_lin_362/uf9o8y6k0txw6zth/wish/1401470606 Moth stuck in relay switch. Grace Hopper called it debugging a computer ]]> 2021-04-09 20:24:48 UTC https://padlet.com/marcus_lin_362/uf9o8y6k0txw6zth/wish/1401470606 marcus_lin_362 https://padlet.com/marcus_lin_362/uf9o8y6k0txw6zth/wish/1401476800 First fully electronic digital computer built in the U.S.A, created at the University of Pennsylvania weighed 30 tons, contained 18,000 vacuum tubes, cost 487,000 ]]> 2021-04-09 20:27:28 UTC https://padlet.com/marcus_lin_362/uf9o8y6k0txw6zth/wish/1401476800 marcus_lin_362 https://padlet.com/marcus_lin_362/uf9o8y6k0txw6zth/wish/1401479202 Used silicon, won Nobel prize, on-off switch ]]> 2021-04-09 20:28:34 UTC https://padlet.com/marcus_lin_362/uf9o8y6k0txw6zth/wish/1401479202 marcus_lin_362 https://padlet.com/marcus_lin_362/uf9o8y6k0txw6zth/wish/1479338714 Instructions for a computer that are loaded each time the computer is turned on.]]> 2021-04-30 17:45:55 UTC https://padlet.com/marcus_lin_362/uf9o8y6k0txw6zth/wish/1479338714 marcus_lin_362 https://padlet.com/marcus_lin_362/uf9o8y6k0txw6zth/wish/1479353427 3rd generation computers used Integrated Circuits that were made of transistor, resistors, resisitors and Capacitators integrated into one chip.]]> 2021-04-30 17:49:13 UTC https://padlet.com/marcus_lin_362/uf9o8y6k0txw6zth/wish/1479353427 marcus_lin_362 https://padlet.com/marcus_lin_362/uf9o8y6k0txw6zth/wish/1479384074 4th Generation computers had microchips. Intel 4004 Microchip had 2,250 transistors ]]> 2021-04-30 17:56:05 UTC https://padlet.com/marcus_lin_362/uf9o8y6k0txw6zth/wish/1479384074 marcus_lin_362 https://padlet.com/marcus_lin_362/uf9o8y6k0txw6zth/wish/1479394962 1.256 bytes of memory
2. 2 MHz Intel 8080 chip
3. Cost $395-$495]]> 2021-04-30 17:58:36 UTC https://padlet.com/marcus_lin_362/uf9o8y6k0txw6zth/wish/1479394962 marcus_lin_362 https://padlet.com/marcus_lin_362/uf9o8y6k0txw6zth/wish/1479404347 1. First wide selling personal computer 
2.8088 Microchip 29,000 transistors 
3. 256 K RAM
4. 1or 2 floppy disk drives


]]> 2021-04-30 18:00:39 UTC https://padlet.com/marcus_lin_362/uf9o8y6k0txw6zth/wish/1479404347 marcus_lin_362 https://padlet.com/marcus_lin_362/uf9o8y6k0txw6zth/wish/1479429569 Released Apple II computers that was used in most schools. First commercial computer with Graphic User Interface GUI and Mouse.]]> 2021-04-30 18:06:32 UTC https://padlet.com/marcus_lin_362/uf9o8y6k0txw6zth/wish/1479429569 marcus_lin_362 https://padlet.com/marcus_lin_362/uf9o8y6k0txw6zth/wish/1479439637 1. Computers in most homes
2. Faster and less expensive 
3. Windows 95 was 1st decent GUI]]> 2021-04-30 18:08:53 UTC https://padlet.com/marcus_lin_362/uf9o8y6k0txw6zth/wish/1479439637 marcus_lin_362 https://padlet.com/marcus_lin_362/uf9o8y6k0txw6zth/wish/1479446959 1. Great Increase in speed, storage and memory 
2. Networking and Internet Capabilities
3. CD Drives
4. Cell phones & Wireless Technology]]> 2021-04-30 18:10:32 UTC https://padlet.com/marcus_lin_362/uf9o8y6k0txw6zth/wish/1479446959