Question about Casio CFX 9850GA Plus Calculator

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Digit display the digits do not show up properly on the display panel. If I perform an operation I cannot see the digits unless I press hard on the screen. It's as if there is no light.

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Hello,
Adjust contrast [MENU] Arrow till [CONT] icon is highlighted. Arrow down to highlight CONTRAST. Press + ou - to adjust.
You can also adjust colors, if you have the color version.
It this does not work, chamge batteries (main batteries).
Hope it helps.

Posted on Sep 22, 2009

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Set up time and dates for Canon P23-DH V


Press and hold the ClockDate Set button for three seconds until the display shows the date with the first digit blinking. Enter a two-digit month, a two-digit date, and a four-digit year, followed by the ClockDate Set button.

Press and release the ClockDate Set button. Press and hold it for three seconds until the display shows the time with the first digit blinking. Enter a four-digit time, press AM/PM as appropriate, then press the ClockDate Set button. Press CE/C to finish and return to calculation mode.

You can download a manual from http://www.usa.canon.com/consumer/controller?act=ModelInfoAct&tabact=DownloadDetailTabAct&fcategoryid=346&modelid=15431

May 19, 2010 | Canon P23-DHV Calculator

1 Answer

How do you set the date and time on the P26-dh


Press and hold the ClockDate Set button for three seconds until the display shows the date with the first digit blinking. Enter a two-digit month, a two-digit date, and a four-digit year, followed by the ClockDate Set button.

Press and release the ClockDate Set button. Press and hold it for three seconds until the display shows the time with the first digit blinking. Enter a four-digit time, press AM/PM as appropriate, then press the ClockDate Set button. Press CE/C to finish and return to calculation mode.

You can download a manual from http://www.usa.canon.com/consumer/controller?act=ModelInfoAct&tabact=DownloadDetailTabAct&fcategoryid=346&modelid=15431

Mar 15, 2010 | Canon P23-DH Calculator

1 Answer

I am getting the wrong results when performing some basic FV math problems. Doy you have any math problems that would help test my calculator?


It might be more efficient to make the calculator perform a self-test. Here is the procedure.

Verifying Proper Operation (Self-Tests)

If it appears that the calculator will not turn on or otherwise is not operating properly, use one of the following procedures.

1. With the calculator off, hold down the [ON] key and press [X] (the multiply key)..
2. Release the [ON] key, then release the [X] key. This initiates a complete test of the calculator’s electronic circuitry. If everything is working correctly, within about 25 seconds (during which the word RUNNING the display should show –8,8,8,8,8,8,8,8,8,8, and all of the status indicators (except the * battery power indicator) should turn on. If the display shows Error 9, goes blank, or otherwise does not show the proper result, the calculator requires service.

Tests of the calculator’s electronics are also performed if the [+] key or the [divide] key is held down when [ON] is released. These tests are included in the calculator to be used in verifying that it is operating properly during manufacturing and service.

If you had suspected that the calculator was not working properly but the proper display was obtained in step 2, it is likely that you made an error in operating the calculator. We suggest you reread the section in this handbook applicable to your calculation — including, if appropriate, appendix A.

If it needs repairs, contact FixThatcal.org
Here are some examples from the manual (there is overlapping in the first two screen captures)

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f4c70d3.jpg

Mar 07, 2010 | HP 12c Calculator

1 Answer

I have fix and deg on my fx 992s and I am only getting results and can only enter numbers to 1 dp. How do I remove this?


Ok. Press [MODE] key three times until you see a screen that shows Fix SCI and NORM. Under FIX you have 1, under SCI you have 2 and under NORM you have 3.

You cannot remove FIX, unless you replace it with another display MODE (SCI or NORM or ENGineering).

You cannot remove DEG unless you change angle unit to RADians or GRAds.
To set angle Unit You start by pressing MODE twice to get a screen that displays DEG, RAD and GRA and below them 1, 2 , qnd 3. If you press 2 the angle unit will be set to Radians. DEG will disappear, but RAD will be shown.

Whatever the display format for numbers (FIX, SCI, NORM, ENG) you can always enter numbers of any length. It is their displaying that is affected by the FIX,SCI, etc. mode.

If you want more than 1 decimal digit, press [MODE] three times, then select 1: FIX. You will be asked to select the number of decimal digits (from 0 to 9). You could take 2, 3 or 4, or anything you want.

  1. To summarize: Indicators on screen reflect the configuration or mode you are in.
  2. They can be replaced by others but you cannot clear the screen of the indicators.
  3. You can select the number of decimal digits in your results,
  4. but there is no restriction on the numbers you enter.

Mar 03, 2010 | Casio Calculators

1 Answer

The calculator is not showing any display after replacing the battery of HP 12C


Try verifying Proper Operation (Self-Tests)

If it appears that the calculator will not turn on or otherwise is not operating properly, use one of the following procedures.

1. With the calculator off, hold down the [ON] key and press [X] (the multiply key)..
2. Release the [ON] key, then release the [X] key. This initiates a complete test of the calculator’s electronic circuitry. If everything is working correctly, within about 25 seconds (during which the word RUNNING the display should show –8,8,8,8,8,8,8,8,8,8, and all of the status indicators (except the * battery power indicator) should turn on. If the display shows Error 9, goes blank, or otherwise does not show the proper result, the calculator requires service.

Tests of the calculator’s electronics are also performed if the [+] key or the [divide] key is held down when [ON] is released. These tests are included in the calculator to be used in verifying that it is operating properly during manufacturing and service.

If it needs repairs, contact FixThatcal.org

Feb 21, 2010 | HP 12c Calculator

1 Answer

I need to know how to operate the Canon P23-DH V calculator. Such as how to set clock and date


Press and hold the ClockDate Set button for three seconds until the display shows the date with the first digit blinking. Enter a two-digit month, a two-digit date, and a four-digit year, followed by the ClockDate Set button.

Press and release the ClockDate Set button. Press and hold it for three seconds until the display shows the time with the first digit blinking. Enter a four-digit time, press AM/PM as appropriate, then press the ClockDate Set button. Press CE/C to finish and return to calculation mode.

You can download a manual from the manufacturer's web site at http://www.usa.canon.com/consumer/controller?act=ModelInfoAct&tabact=DownloadDetailTabAct&fcategoryid=346&modelid=15431

Jan 05, 2010 | Canon P23-DHV Calculator

1 Answer

How do I set the date and time for this calculator?


Press and hold the ClockDate Set button for three seconds until the display shows the date with the first digit blinking. Enter a two-digit month, a two-digit date, and a four-digit year, followed by the ClockDate Set button.

Press and release the ClockDate Set button. Press and hold it for three seconds until the display shows the time with the first digit blinking. Enter a four-digit time, press AM/PM as appropriate, then press the ClockDate Set button. Press CE/C to finish and return to calculation mode.

Oct 17, 2009 | Canon P23-DHIII Calculator

1 Answer

I have an HP 12C calculator and I cannot find the user manual and I cannot remember how to change the no. of decimal places?


Check this HP FAQ:
Setting a Fixed Decimal Place You can download the manual and user guides for your calculator from here:
http://h10025.www1.hp.com/ewfrf/wc/manualCategory?lc=en&dlc=en&cc=us&product=81575&lang=en&

For more information, Faqs & how-Tosgo the HP support homepage for your calculator:
http://h10025.www1.hp.com/ewfrf/wc/product?lc=en&dlc=en&cc=us&lang=en&product=81575&
s.gif
Introduction This document describes how to set the desired number of decimal places on the HP 12c calculator in standard format. It also covers how to enter a number in scientific notation. Instructions for standard format
  1. Press and release c01774993.jpg .
  2. Press the number key for the desired number of decimal places to be displayed to the right of the decimal point (0 through 9). The calculator displays a maximum of 10 digits.
The display will show the specified number of decimal places. The answer will be rounded to the number of digits selected. Example (standard format) If the number in the display is 14.87456320, the display will be changed as follows: Keystroke Display c01774994.jpg 14.8746 c01774995.jpg 14.9 c01774996.jpg 15 c01774997.jpg 14.87456320 Instructions for scientific notation Use scientific notation for very large or very small numbers. Type in the mantissa. After pressing, c01774998.jpg the next numbers keyed in are exponents of 10. Press c01774569.jpg . If during an operation a result has more than 10 digits, the calculator automatically displays the number in scientific notation
s.gif
Introduction This document describes how to set the desired number of decimal places on the HP 12c calculator in standard format. It also covers how to enter a number in scientific notation. Instructions for standard format
  1. Press and release c01774993.jpg .
  2. Press the number key for the desired number of decimal places to be displayed to the right of the decimal point (0 through 9). The calculator displays a maximum of 10 digits.
The display will show the specified number of decimal places. The answer will be rounded to the number of digits selected. Example (standard format) If the number in the display is 14.87456320, the display will be changed as follows: Keystroke Display c01774994.jpg 14.8746 c01774995.jpg 14.9 c01774996.jpg 15 c01774997.jpg 14.87456320 Instructions for scientific notation Use scientific notation for very large or very small numbers. Type in the mantissa. After pressing, c01774998.jpg the next numbers keyed in are exponents of 10. Press c01774569.jpg . If during an operation a result has more than 10 digits, the calculator automatically displays the number in scientific notation

Aug 24, 2009 | HP 12c Calculator

1 Answer

How to setup clock and calendar for canon p23 dhv? Thanks


Press and hold the ClockDate Set button for three seconds until the display shows the date with the first digit blinking. Enter a two-digit month, a two-digit date, and a four-digit year, followed by the ClockDate Set button.

Press and release the ClockDate Set button. Press and hold it for three seconds until the display shows the time with the first digit blinking. Enter a four-digit time, press AM/PM as appropriate, then press the ClockDate Set button. Press CE/C to finish and return to calculation mode.

You can download a manual from http://www.usa.canon.com/consumer/controller?act=ModelInfoAct&tabact=DownloadDetailTabAct&fcategoryid=346&modelid=15431

May 11, 2009 | Canon P23-DHV Calculator

1 Answer

The digits are not displaying properly


Hello,
Increase the number of digits displayed. In floating mode the calculator can displyay up to nine decimal digits. And no matter what that last digit maybe, you can safely ignore it. More often than not the extra digits are zeros. As to the value of PI not displaying the 7th or 8th digit, do not worry: most calculations with Pi are precise enough if you use 3.14.
Hope it helps.

Dec 09, 2008 | Sharp EL-531VB Calculator

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