history of computers by Isabel Attmore https://padlet.com/isabelattmore144/4r5xixb2e40db4br 3,000 BC-21st century en-us 2021-04-08 19:27:00 UTC 2021-04-08 20:38:41 UTC hello@padlet.com 3.000 BC Abacus isabelattmore144 https://padlet.com/isabelattmore144/4r5xixb2e40db4br/wish/1397504048 beads on metal rods used for counting and calculations]]> 2021-04-08 19:41:54 UTC https://padlet.com/isabelattmore144/4r5xixb2e40db4br/wish/1397504048 1630 AD slide rule isabelattmore144 https://padlet.com/isabelattmore144/4r5xixb2e40db4br/wish/1397514702 based on logarithms]]> 2021-04-08 19:45:02 UTC https://padlet.com/isabelattmore144/4r5xixb2e40db4br/wish/1397514702 1801 AD Jaquard loom isabelattmore144 https://padlet.com/isabelattmore144/4r5xixb2e40db4br/wish/1397523920 first stored program-metal cards]]> 2021-04-08 19:47:40 UTC https://padlet.com/isabelattmore144/4r5xixb2e40db4br/wish/1397523920 1822-1833 Charles babbage isabelattmore144 https://padlet.com/isabelattmore144/4r5xixb2e40db4br/wish/1397539365 analytic engine]]> 2021-04-08 19:52:18 UTC https://padlet.com/isabelattmore144/4r5xixb2e40db4br/wish/1397539365 1945 first computer bug isabelattmore144 https://padlet.com/isabelattmore144/4r5xixb2e40db4br/wish/1397558824 a moth stuck in relay switch]]> 2021-04-08 19:57:58 UTC https://padlet.com/isabelattmore144/4r5xixb2e40db4br/wish/1397558824 1950 ist generation computer isabelattmore144 https://padlet.com/isabelattmore144/4r5xixb2e40db4br/wish/1397567867 they used empty vacuum tubes to protect circuitry]]> 2021-04-08 20:00:51 UTC https://padlet.com/isabelattmore144/4r5xixb2e40db4br/wish/1397567867 1941-56 grace hopper isabelattmore144 https://padlet.com/isabelattmore144/4r5xixb2e40db4br/wish/1397583493 programed UNIVAC]]> 2021-04-08 20:06:07 UTC https://padlet.com/isabelattmore144/4r5xixb2e40db4br/wish/1397583493 1951 UNIVAC isabelattmore144 https://padlet.com/isabelattmore144/4r5xixb2e40db4br/wish/1397595011 first fully electronic digital computer built in the U.S]]> 2021-04-08 20:10:08 UTC https://padlet.com/isabelattmore144/4r5xixb2e40db4br/wish/1397595011 2nd generation computer isabelattmore144 https://padlet.com/isabelattmore144/4r5xixb2e40db4br/wish/1397601211 replaced with vacuum tubes for transmiters]]> 2021-04-08 20:12:17 UTC https://padlet.com/isabelattmore144/4r5xixb2e40db4br/wish/1397601211 1960-1970 operating systems isabelattmore144 https://padlet.com/isabelattmore144/4r5xixb2e40db4br/wish/1397607319 Instructions for a 
 computer that are loaded each time the 3rd Generation computers used computer is turned on 

]]> 2021-04-08 20:14:20 UTC https://padlet.com/isabelattmore144/4r5xixb2e40db4br/wish/1397607319 1948 first transistor isabelattmore144 https://padlet.com/isabelattmore144/4r5xixb2e40db4br/wish/1397616493 used silicon, won Nobel prize, on-off switch. 

]]> 2021-04-08 20:17:33 UTC https://padlet.com/isabelattmore144/4r5xixb2e40db4br/wish/1397616493 1960-70 3rd generation computer isabelattmore144 https://padlet.com/isabelattmore144/4r5xixb2e40db4br/wish/1397626042 Integrated Circuits that were 
made of transistors, resistors
and capacitators integrated into 4th Generation computers had 
one chip
]]> 2021-04-08 20:20:58 UTC https://padlet.com/isabelattmore144/4r5xixb2e40db4br/wish/1397626042 1970 4th generation computer isabelattmore144 https://padlet.com/isabelattmore144/4r5xixb2e40db4br/wish/1397635977 4th generation computers had micro chips]]> 2021-04-08 20:24:21 UTC https://padlet.com/isabelattmore144/4r5xixb2e40db4br/wish/1397635977 1975 MITS Altair isabelattmore144 https://padlet.com/isabelattmore144/4r5xixb2e40db4br/wish/1397641198 Intel 4004 Microchip had 2,250 transistors 
– 1975). 256 bytes of memory 

2 MHz Intel 8080 chip IBM PC 
Cost $395-$495 

]]> 2021-04-08 20:26:17 UTC https://padlet.com/isabelattmore144/4r5xixb2e40db4br/wish/1397641198 1981 IBM pc isabelattmore144 https://padlet.com/isabelattmore144/4r5xixb2e40db4br/wish/1397646960 first wide selling computer]]> 2021-04-08 20:28:19 UTC https://padlet.com/isabelattmore144/4r5xixb2e40db4br/wish/1397646960 1977 Apple computers isabelattmore144 https://padlet.com/isabelattmore144/4r5xixb2e40db4br/wish/1397663501 people used this in most schools]]> 2021-04-08 20:34:25 UTC https://padlet.com/isabelattmore144/4r5xixb2e40db4br/wish/1397663501 1990s computers isabelattmore144 https://padlet.com/isabelattmore144/4r5xixb2e40db4br/wish/1397670318 many homes had them]]> 2021-04-08 20:37:04 UTC https://padlet.com/isabelattmore144/4r5xixb2e40db4br/wish/1397670318 21st century computers isabelattmore144 https://padlet.com/isabelattmore144/4r5xixb2e40db4br/wish/1397671357 lots of wireless and advanced technology]]> 2021-04-08 20:37:29 UTC https://padlet.com/isabelattmore144/4r5xixb2e40db4br/wish/1397671357