Why Are The Numbers On A Calculator And A Phone Reversed?

If you havent yet noticed it, check it now but do you know the reason?

He says,

Telephones never had a real zero.

Have you ever thought why numbers on calculator are reversed on a phone?

on the rotary telephone dial wasnt a zero,it was a ten.

both numerically and physically.

and Z on the 9?

older telephones

Technically-speaking, there never was a 0 in telephone-land.

And that, grasshopper, is why westillhave the telephone 0?

in the ten space.

old calculators

1 Yes, Iknowthat New Zealand and Sweden had their rotary telephone dials all wrong.

But most people dont, and Im trying to write intelligible answers for everyone.

More perplexing to me is why adding machine (and later calculator) manufacturersthe newcomerschose to put the 7?

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in the top-left position, which seems to me like the natural place for the 1?

for a person who writes left-to-right, top-to-bottom?

Conflicting patents, maybe?

Yet I presume adding machines were invented before the push-button dial.

Some mechanical reason to do with the complex machinery packed into an adding machine?

Hope some telephone manufacturing company rethinks the folly and start building new phones with numbers climbing up.

source: www.techworm.net