                            VALID KEYBOARD INPUTS                            
                           ~~~~~~~~~~~~~~~~~~~~~~~                           
   PRT Calc is fairly versatile in  what  inputs  it  will  accept,  but  not
limitless. You can use normal numbers (E.G. 0.0015  or  2300),  you  can  use 
scientific notation (E.G. 1.5e-3 or 2.3e3), or you can use  a  suffix  letter 
(E.G. 1.5m or 2.3k). When using a suffix PRT Calc will accept f,p,n,u,m,k,M,G
or T. It will even accept the Greek letter æ (mu) if you want to be pedantic!
Anything after the first letter is ignored so 2.3k is sufficient for  2.3 kê.
The suffix must NOT be placed in the middle of the number, I.E.- 2k3  is  NOT 
valid and will be interpreted as 2k. Commas must NOT be included. 2,300  will 
be interpreted as 2. 
   Temperature inputs must be in the selected temperature  scale.  To  change 
the scale use item 7 in  the  main  menu.  All  inputs  must  be  within  the 
specified range, although inputs just outside the limits will be accepted and 
a warning displayed. The valid range is displayed in the header.
