Where is the 'comp' button on the hp calculator

Mmmm... it sounds like the calculator has been dropped or possibly gotten wet - maybe with something wet & sugary, which when it dries leaves behind a sugar deposit that won't allow enough electrical connection for the keys to work.

At this point, you've got very little to lose - if you suspect that it may have gotten wet, you could pull it apart (carefully) and rinse it out inside - very thoroughly - with distilled water, then let it dry for about a week before you put it back together.

If it's been dropped, it's probably not worth repairing; even scientific or statistical calculators are inexpensive compared to the cost of repairs.

Hi there,

First make sure all previous amounts stored are cleared by pressing 2nd F MODE.
Then type in the original value 20 000 and press PV.
Type in the interest 13 and press I/Y.
(If i assume that the interest is compounded yearly my calculation is more simple)
press 5 and N
Press COMP FV and your answer will be - 36 848.70

(If I assume that the interest is compounded monthly, i need to input a little bit more data into my calculator)
Press 2nd F I/Y (to get to payments per year) and press 12 and ENT. Press ON.
Then press 5 and 2nd F N and then press N again.
Now calculate FV by pressing COMP FV which should give you - 38 177.13.

Take this value and subtract the PV from it to get the amount of interest earned.

Hi there,

this means that it is doing a constant calculation. To prevent this from happening you need to press the ON button between your calculations.
But dont worry, if you want to go back and view previous calculations simply press the up arrow key and all of your previous calculations will still be there!

Hi there,

To use the trig functions simply press the button with the trig function you want and then type in the value of the angle. If you want to add or subtract thing within the angle remember to put open and close ( ) brackets around the angle.

If you have any other calculator questions dont forget to check out Welcome to Maths at SHARP Maths at Sharp

The website also has a manual available to download.

Put the cash roll on the metal lever, turn on printer, feed the paper in the rectangular slot, at the sametime press the left key at the top, "it will have a arrow that points up inside a page with squiggily lines at top of the button, the printer will come on and grab the paper and automatically feed it through, once you see it in the window release the button.

For the WriteView calculators EL-W5xx, you press 2ndF MATH to open (SetUp). Select 2:Editor, then 0:view.

The default calculation mode is the mode [COMP]. Press the [MODE] key, and select [1:COMP]. It is used for all non specialized calculations.

See the illustrated instructions on the first page of the manual at http://files.sharpusa.com/Downloads/ForHome/HomeOffice/Calculators/Manuals/cal_man_el2630P.pdf

CPT does stand for COMPUTE, on other calculators this is the COMP button, same thing, different name.