20 Most Recent Casio QT-6600 Cash Register Touchscreen Terminal Only w/ Free Questions & Answers


go to PGM 3 then go to
1- Machine Feature
go to
9-Tax Table
go to
1- tax table 1
set tax rate to 5.0000
set Rounding to Round up
set singapore Rounding to Round up if you are not using the 1 cent anymore
set calculation Type to Table and Add on

Press ESC to go back to Tax Table window and choose
2- Tax Table 2
repeat the same steps as for Tax Table 1 but set the tax rate to 9.98

Casio QT-6600... | Answered on Jan 10, 2017


Sub total button is designation is a a diamond.

Casio Office... | Answered on May 13, 2019


Whats the point of the % button then?

Casio Office... | Answered on May 13, 2019


The cheapest option is a magnifying glass of course.
You could download it from casio and enlarge it before printing on your computer.
CASIO Worldwide

Casio Office... | Answered on May 12, 2019


you shud be able to find anything you need here>>>www.discountbargainprices.com

Casio Office... | Answered on Apr 16, 2019


the function buttons are labeled + and -
to add put in the number then press the + button then put in the next number and + and son for all the numbers you are adding up
to subtract put in a number then press the- button ,then put in the next number and press the - button and so on
to do a combination calculation put in a number then press the + button and so on until you come to a number that you want to subtract in which case you put in that number then press the - button and if the next number is to be added ,put the number in and press the + button

Casio Office... | Answered on Apr 15, 2019


Seems to be a common problem on this otherwise great calculator that helped me through both high school and university. I've had mine for nearly 20 years and this problem showed up a few years ago. But I remember classmates reported the same problem when it was almost new.

If replacing batteries isn't helping, the problem is most likely caused by oxidation on the springs connecting the battery holder to the main PCB. The solution is as follows:

1. Remove the metal back cover (2 screws)
2. Remove the plastic back lid by removing the black screws (leave the batteries mounted) and CAREFULLY slide the back lid to the lower end (where the EXE button is located). Do not lift while sliding until the lid easily comes off.
3. On the back side of the plastic lid, very carefully bend the the two metal connectors ~1 mm on both batteryholders to increase their tension.
4. Clean the connecting pads on the PCB and the metal springs with de-oxidizer solvent.
5. Re-assemble and your 4500P calculator should be good as new.

Casio Office... | Answered on Apr 02, 2019

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