Top 20 Casio DR-250HD Calculator Questions & Answers

Does the E code look like 10.8372487489E12? If so, the calculator is either set to scientific notation mode OR the result was an answer that was too big to display on the calculator, so it converted it to scientific notation. To convert from scientific notation back to regular notation, move the decimal to the right by the number of times after the E. In this case, the number after the E is 12, so we have to move the decimal to the right 12 times. In this case, I get the final answer as 10 837 248 748 900. Good luck. Any questions, let me know. Paul

when this happen just replace the batteries or turn the calculator upside down. find the reset hole and use thin pin. an office paper clip stretched will suffice. insert it inside the hole and press to hear a click sound. that is how to reset a calcolator.

HOLA COMO ESTAS NECESITO SABER CUANTO CUESTA LA CALCULADORA SUMADORA DR-250 HD

The item counter isn't available on this model.

Hold the SET (%) . It will cycle through hour and minutes, finally date. when done set hit the SET (%) again.

I just had the same problem today except I needed open because of a paper jam. Anyways, I started by using a philips head screwdriver and pried by where the plug is and worked my way around. The cover is held on by the screws on the bottom and some tabs inside. You kind of have to pull if open as it is very stubborn. Good luck!

If certain numbers are not printing then you can either send it in for repairs or purchase another item. The item may no longer be available through Casio but you might be able to find it yet on the internet.

first you must clean the keypad and it is printed with a clean piece of old clothes imersed in alchohol and dry it carefully and see the result if it is ok thats fine if not!!!!go to nearest service center.

make sure you are in "print mode" step 1 pess the AC button step 2 press and hold for two seconds the % button step 3 press the tax+ button step 4 input tax rate step 5 press the % button now check to make sure that is correct.

The item counter isn't available on this model.

Here is the Service Manual, but in normal instances, you would just buy another one, or return it to Casio for service.

Casio DR-120LB Service Manual

ManualsLib https://www.manualslib.com > ... > DR-120LB View and Download Casio DR-120LB service manual online. DR-120LB cash register pdf manual download. Also for: Dr-200l, Dr-210l, Dr-320b, Zx-517c, Zx-517a, ... ..

The way to do it is this; Divide the number by 2, get the integer quotient for the next iteration. Get the remainder for the binary digit, repeat the steps until the quotient is equal to 0.

It is because it is not set up correctly. For you to fix it, just press on the lower right button for few seconds till it displays " cas10" then let go of the button

If your Casio fx-991EX calculator is displaying [Dec], it means it's in Decimal mode. To switch back to normal calculations, press the MODE button and select the desired mode, such as COMP for computation or MATH for mathematical functions. I think this will solve your problem

The NEWYES NY-991MS and CTIFREE fx-991ES PLUS calculators do not have a dedicated "FACT" button like the Casio FX-83GTX. However, you can still find prime numbers on these calculators.To find prime numbers:NEWYES NY-991MS:Press the "MODE" button.Choose "PRIME" from the list of options.Enter the desired number and press "=" to check if it's prime.CTIFREE fx-991ES PLUS:Press the "MODE" button.Select "TABLE" or "TABLESET."Input a starting point and an ending point, then observe the table for prime numbers.Although the techniques may vary from those used on the Casio FX-83GTX, they prove to be effective for prime number calculations on the designated calculators.

There is a reset button on the back of the Casio. If that does not work, you may find an alternative method in the manual. CASIO HR-100TM USER MANUAL Pdf Download ' ManualsLib

It is math error. See user manual page 331 Appendix 1 for help. Appendix 1. Error Message Table - Casio fx-9750GII User Manual [Page 331] ' ManualsLib Also on Casio website. Errors (casio.com)

On Page 2 apparently not. It is a very basic machine. You can turn printing off altogether. https://support.casio.com/storage/en/manual/pdf/EN/004/HR-170RC_200RC_WA_EN.pdf ..

Question edited for clarity and toss in some CAPS. Maths is important, but ritten English is more importanter :>D No idea what any of that means :>/ But this appears to be the answer. Our Maths Expert just retired from Fixya. https://www.google.com/search?q=Solve+s28+to+show+answer+in+terms+of+2+sqrt+7+not+decimal ..