Ultimately Simple Calculator

Listed in the Built By Monkeys blog from Design News, comes the ultimately simplistic calculator that anyone can use.

It can be found At this location

Picture of Ultimately Simple Calculator
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Kryptonite7 years ago
I gotta get one of these for maths!
Goodhart (author)  Kryptonite7 years ago
Hmm, too expensive for me:  I got one with 42 functions for $8 (I remember when the first ones came out with 4 functions: add, subtract, multiply, and divide and they were like $200 or more).  
I bought a pen and a notepad for $3. Beats all of your calculators!
Goodhart (author)  Kryptonite7 years ago
Meh, they give them out free now (the 4 function ones) if you visit certain companies LOL 
Awesome, I should do some research...
Plasmana7 years ago
I never seen : used as division... I only seen ÷, / and the other one I can't make properly with a few keywords.
Goodhart (author)  Plasmana7 years ago
Oh I bet you've seen the others here too: http://mathforum.org/library/drmath/view/58409.html

According to:   http://searchdatacenter.techtarget.com/sDefinition/0,,sid80_gci803019,00.html
the :  sign means:  
: Colon,
ratio sign
... is to ...
... such that ...
... it is true that ...
Division or ratio,
symbol following
logical quantifier or
used in defining a set
2:4 = 20:40

x : x > 4 and x < 5

x : x < 0 or x > -1

S = {x : x < 3}

I assume the button next to the multiplication button is division? (I never saw a division sign like that)
Weird... it's commonly used in Europe.

We actually started with "/" and then in highschool you work with ":"
Goodhart (author)  Rock Soldier7 years ago
Well, I don't think there is one in the printable "ASCII" code table, is there?  The dash with a dot above and below it.
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