Algebra OperatorsFunctions

Uncertainty Calculator± Y
dY Z
dZ Mem
dMem Gary L. Bertrand 
This
is a device for
performing
calculations involving quantities with known or estimated
uncertainties.
The calculations may involve algebraic operations
such
as:
Z = X + Y ; Z = X  Y
; Z = X x
Y
; Z = X/Y ; Z = X^{Y}
or
mathematical functions
of
the type:
Z = 1/X ; Z = ln(X) ; Z = log_{10}(X)
;
Z = 10^{X} ; Z = e^{X} ; Z = sqrt(X) .
If
uncertainties (dX, dY)
are
provided for the input quantities (X,Y), the program will perform the
operation
or function to calculate the answer (Z) and will also calculate the
uncertainty
in the answer (dZ). The program will assume the value has no
uncertainty
if an uncertainty is not provided.
Position
the
cursor on the blank under "X", click the mouse, and type a
value.
Alternately, press the TAB key until the cursor appears in this blank,
then type the number. In case of an error, use normal
textediting
procedures. Enter values for X and dX, and possibly for Y and
dY.
(The TAB key moves the cursor through the blanks in the order: X, dX,
Y,
dY).
Click on
the button for the desired operation or function. The
equation
for
the calculation appears in the central blank, and the values of Z and
dZ
appear in their respective blanks.
There are buttons for transferring values from Z to a MEMory location, or to the blanks for X or Y; or from the MEMory to X or Y.