Changes
From Karnataka Open Educational Resources
595 bytes removed
, 11:24, 3 June 2014
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| | instruct computers to do calculations. | | instruct computers to do calculations. |
| | [[Image:Introduction-Part3_html_797aeff2.png|700px|centre]]<br> | | [[Image:Introduction-Part3_html_797aeff2.png|700px|centre]]<br> |
| | + | [[Image:Introduction-Part3_html_248b96c3.png|thumb]]<br> |
| | |} | | |} |
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| − | [[Image:Introduction-Part3_html_m21bc9239.png]]<br>
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| − | ''World's
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| − | first computer''
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| − |
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| − |
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| − | [[Image:Introduction-Part3_html_797aeff2.png]]<br>
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| − | ''Punch
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| − | card''
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| − | Did you
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| − | know, the first computer was as big as your classroom! 60 years ago,
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| − | computers were very big, costly and used lot of electricity. The
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| − | processors of the first computers were made using something called
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| − | 'vacuum tubes' - which used tubes in which
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| − | electrons were moving. Punch cards were an input method. After the
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| − | vacuum tubes, came the transistors which could turn electricity in a
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| − | circuit 'on' or 'off'. This turning 'on' and 'off' could be used to
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| − | instruct computers to do calculations.
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| − |
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| − | <br>
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| − | <br>
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| − | [[Image:Introduction-Part3_html_248b96c3.png]]<br> | + | [[Image:Introduction-Part3_html_248b96c3.png|thumb]]<br> |
| | ''Integrated | | ''Integrated |
| | Circuit (IC)'' | | Circuit (IC)'' |
