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From Karnataka Open Educational Resources
Introduction to ICT the computer (view source)
Revision as of 11:59, 3 June 2014
, 11:59, 3 June 2014→History of computers
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Punch cards were an input method. After the vacuum tubes, came the transistors
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'
which could turn electricity in a circuit 'on' or 'off'.This turning 'on'
and 'off' could be used to instruct computers to do calculations.
and 'off' could be used to instruct computers to do calculations.
