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Introduction to ICT the computer (view source)
Revision as of 11:50, 3 June 2014
, 11:50, 3 June 2014→History of computers
Punch cards were an input method. After the vacuum tubes, came the transistors which could turn electricity in a circuit 'on' or 'off'.This turning 'on' and 'off' could be used to instruct computers to do calculations.[[Image:IntroductionPart3_html_797aeff2.png|thumb|right]]
Punch cards were an input method. After the vacuum tubes, came the transistors
which could turn electricity in a circuit 'on' or 'off'.This turning 'on'
and 'off' could be used to instruct computers to do calculations.[[Image:IntroductionPart3_html_797aeff2.png|thumb|right]]