OT: Calculators

I discovered this when solving one of those trivia questions.

The question was to find out what


36 divided by 2.(3)+ 4

can't get the division symbol on this PC.

Correct answer should be to write this as

36/2 X 3 + 4 =58

a computer would interpret it thus. Type that into a calculator and you will get 58 if you type

36 divided by 2X(3) + 4

where it doesn't matter whether there is a bracket round the 3 or not.

Now in your calculator put

36 divided by 2.(3)+4

 where you use the dot operator (assuming your calculator supports this) instead of multiply. You get 10.

It appears that the dot multiply takes the brackets around the 2 and 3 (2X3) and then does the division into 36. You must have the brackets round the 3 or it takes the number as 2.3 of course.

On Thursday, August 18, 2016 at 2:19:18 PM UTC-7, gyans...@gmail.com wrote:
> I discovered this when solving one of those trivia questions.

> The question was to find out what

> 36 divided by 2.(3)+ 4

> can't get the division symbol on this PC.

> Correct answer should be to write this as

> 36/2 X 3 + 4 =58

(snip)

> 36 divided by 2.(3)+4
 
>  where you use the dot operator (assuming your calculator supports
>  this) instead of multiply. You get 10.

In the early days of calculators, there was no precedence. All operations
were done left to right, as that saved registers.

> It appears that the dot multiply takes the brackets around the 2 and 3
> (2X3) and then does the division into 36. You must have the brackets
> round the 3 or it takes the number as 2.3 of course.

Which calculators have a dot operator? 

-- glen

On Friday, August 19, 2016 at 12:55:11 PM UTC+12, herrman...@gmail.com wrote:
> On Thursday, August 18, 2016 at 2:19:18 PM UTC-7, gyans...@gmail.com wrote:
> > I discovered this when solving one of those trivia questions.
> 
> > The question was to find out what
> 
> > 36 divided by 2.(3)+ 4
> 
> > can't get the division symbol on this PC.
> 
> > Correct answer should be to write this as
> 
> > 36/2 X 3 + 4 =58
> 
> (snip)
> 
> > 36 divided by 2.(3)+4
>  
> >  where you use the dot operator (assuming your calculator supports
> >  this) instead of multiply. You get 10.
> 
> In the early days of calculators, there was no precedence. All operations
> were done left to right, as that saved registers.
> 
> > It appears that the dot multiply takes the brackets around the 2 and 3
> > (2X3) and then does the division into 36. You must have the brackets
> > round the 3 or it takes the number as 2.3 of course.
> 
> Which calculators have a dot operator? 
> 
> -- glen

Casio does and so does sharp.

herrmannsfeldt@gmail.com writes:

> On Thursday, August 18, 2016 at 2:19:18 PM UTC-7, gyans...@gmail.com wrote:
>> I discovered this when solving one of those trivia questions.
>
>> The question was to find out what
>
>> 36 divided by 2.(3)+ 4
>
>> can't get the division symbol on this PC.
>
>> Correct answer should be to write this as
>
>> 36/2 X 3 + 4 =58
>
> (snip)
>
>> 36 divided by 2.(3)+4
>  
>>  where you use the dot operator (assuming your calculator supports
>>  this) instead of multiply. You get 10.
>
> In the early days of calculators, there was no precedence. All operations
> were done left to right, as that saved registers.
>
>> It appears that the dot multiply takes the brackets around the 2 and 3
>> (2X3) and then does the division into 36. You must have the brackets
>> round the 3 or it takes the number as 2.3 of course.
>
> Which calculators have a dot operator? 

<snicker>
-- 
Randy Yates, DSP/Embedded Firmware Developer
Digital Signal Labs
http://www.digitalsignallabs.com