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Casio FX991ES Scientific Calculator - Page 4 Questions & Answers
How do i do prime numbers on the NEWYES NY-991MS calculator and CTIFREE fx-991ES PLUS calculator?
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.
Casio QT-6600 kitchen printer stop working.
Is there lights on, on the printer? Does it have a receipt paper roll in it?
You can do a Power Cycle of the Terminal and the Printer. Unplug the printer for the wall socket. Remove the data socket, replace the data socket making sure the connection is tight.
Disconnect the terminal from the main power, and count to 20. Plug the terminal back in.
Now go to the kitchen and plug the printer back into the mains.
The reset should fix it. The rest is in the manual, which I told you earlier today. Yes it is complicated and you may have a network switch if you have multiple terminals and possibly a computer joining everything. If you find that too complicated, call the company that sold you the unit and tell them to bring a new ticket printer with them 'just in case'. That type if ticket printer is fairly specialized, but they are common. They normally don't charge for that type of help
In the manual under Remote Printer Control.
https://totalpos.co.nz/wp-content/uploads/2020/03/QT6600-Reference-Manual.pdf
More here
https://www.google.com/search?q=Casio+QT-6600+connect+kitchen+printer
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How to calculate percentage with Casio fx-991EX?
To find the percentage of a number: Let's say you want to find 20% of 150.
- Enter the number you want to find the percentage of (150 in this example).
- Press the multiplication key (*).
- Enter the percentage value (20 in this example).
- Press the percentage key (%).
The calculator will display the result, which in this case is 30 (20% of 150 is 30
Is it possible to have a result of a calc expression without inserting x value? Casio fx991ex
Yes, the Casio fx-991EX scientific calculator has a feature called "natural display" which allows you to input and display mathematical expressions exactly as they appear in textbooks, including variables such as "x".
To perform the calculation you mentioned, 2x * 2 = 4x, simply enter the expression "2x*2" into the calculator, and it will display "4x" as the result. You can then use this result in further calculations without having to enter a value for "x".
To enter the variable "x", you can use the "ALPHA" key followed by the corresponding letter key. For example, to enter "x", press "ALPHA" followed by "X".
Note that if you want to solve for a specific value of "x", you will need to use the solver or equation mode on your calculator to input the equation and specify the value of "x" you want to solve for.
When I try to divide two numbers with no divisors in common, the calculator goes off
t's possible that you are encountering a problem known as "divide by zero," which occurs when you try to divide a number by zero. Most calculators, including the CASIO fx-570ES PLUS, are not designed to handle this type of calculation and will usually display an error message or simply "go off." This is because dividing by zero is not a well-defined mathematical operation and does not have a meaningful answer.
How do I load the paper in Casio DR-T220 Thermal Printer calculator
To load paper into the Casio DR-T220 thermal printer calculator, follow these steps:
- Open the printer cover by pressing the release button located at the front of the calculator.
- Carefully insert the roll of thermal paper into the printer with the paper facing forward, and the end of the paper coming out of the top of the roll.
- Adjust the paper guide to fit snugly against the paper roll.
- Close the printer cover.
- Turn on the calculator and press the "Feed" button to advance the paper to the correct position for printing.
Please Note: Be sure to use the correct type of thermal paper for your calculator, as specified in the user manual.
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