(SOLVED) Is it possible to make more pins high at the same time ?

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i wondering (because can not find information on this) if possible make several pins high or low @ same time (in 1 instruction) because arduino switch between several high power sources @ same time , , can not risk make false contacts between sources.
thanks ... quick respons ... , (portmanipulation) solution

http://arduino.cc/en/reference/portmanipulation


Arduino Forum > Using Arduino > Project Guidance > (SOLVED) Is it possible to make more pins high at the same time ?


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