User talk:84.77.239.109

Welcome...

Hello, 84.77.239.109, and welcome to Wikipedia! Thank you for your contributions. I hope you like this place and decide to stay. Here are some pages that you might find helpful:

Please sign your name on talk pages using four tildes (~~~~); this will automatically produce your username and the date. If you need help, check out Wikipedia:Questions, ask me on my talk page, or place {{helpme}} on your talk page and ask your question there. Again, welcome! SpinningSpark 19:27, 12 August 2009 (UTC)[reply]

Units of measure

In DDR SDRAM you said in an edit summary that units of measure must be the same on both sides of an equation. True...if the units are not explicitly stated. If the units are stated on both sides then you can do it, otherwise it would not be allowed to write 1kg = 1000g, which would be ridiculous! SpinningSpark 19:27, 12 August 2009 (UTC)[reply]

Of course. What I mean is that both terms must be homogeneus: weight qty = weight qty or time qty = time qty, otherwise we are adding pears to apples. It is nosense, for example: time qty = frecuency qty. Thanks

"Cycle" is not a unit according to the SI system, and consequently the Hertz has units of s^-1 in base units. Please stop adding a note at the bottom of the references section. There is already an inline note on this. SpinningSpark 12:03, 13 August 2009 (UTC)[reply]

Interesting. Please see note (a) The SI prefixes may be used with any of the special names and symbols, but when this is done the resulting unit will no longer be coherent.

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