I'm sick of this garbage

[K.I.L.E.R]

I use Windows PowerToy calculator however it isn't powerful enough for my needs.
Look at this:

16*16
    256
0xFF
    255
0xFF << 1
    ERROR:Unknown characters occurred [0xff<<1]
0xFF ^ 3
    16581375
0xFF xor 3
    ERROR:Unknown characters occurred [0xffxor3]

integrate(sin(x) + (a/b)cos(x*y), y)
    ERROR:Unknown characters occurred []

As far as a calculator is concerned, what would *you* want?

 

[rendezvous]

As far as the first calculations i'm doing perfectly well using my head, otherwise i'm quite fine with the standard windows calculator or google calculator.
Google calculator works great for unit conversions too.

For the integal I'd prefer something like mathematica or maple.
For making lots of simpler calculations on arrays and matrices I'd prefer matlab.
I can't however find myself to shell out that amount of money for something i would use once in a blue moon.

You should be able to make your own calculator that will handle the calculations execpt the integration without that much difficulty.