Windows XP
Vista
Seven
Advanced calculator.
CrazyMath allows you to enter sequences of expressions as you would write them on paper:
1+1=’2’ a:=25.6*(12+1.4/sin(1.45))='343.30308' b:=cos(pi/2) c:=a+b='343.30308' …
1+1=’2’
a:=25.6*(12+1.4/sin(1.45))='343.30308'
b:=cos(pi/2)
c:=a+b='343.30308'
…
The program is absolutely free