What is the comma for? - Texas Instruments TI-84 Plus Silver Edition Graphic Calculator

To add commas to your spreadsheet you need the format the numbers. If you want your whole spreadsheet to use commas, click on the area to the left of column A and above number 1. This should highlight the whole spreadsheet. Click on the "," icon in the "number" area, and your spreadsheet will be formatted to put commas in.

Good luck,

Paul

Here's the formal definition.........
en.wikipedia.org/wiki/Serial_comma

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In English punctuation, a serial comma or series comma (also called Oxford comma) is a comma placed immediately before the coordinating conjunction (usually and, or, or nor) in a series of three or more terms.

1. On the HP 12C the default separator is a comma.
2. Turn the calculator off first by pressing [ON].
3. Press and hold [.] (that is, the decimal point key) and then press and release [ON] to change the digit separator from a comma to a point.
4. Perform the same steps again to change the point to a comma.

The question is : Is there a comma button? I don't think there is one. The comma as a decimal marker is used only in France and a few other countries. On some calculators (mainly HP's) one can select to use a comma or a period (dot) but most others calculators manufactures do not bother with this distinction. In itself it is not such a huge deal.
Anyway if is available on your calculator it should be set by pressing [2nd] or [SHIFT] followed by the [.] symbol.. I checked pictures of the calculator face but could not recognize the symbol. It did not like a comma to me.

Yes,it's possible to program the Fx-82es to separate the digits with the help of comma.
PLEASE FOLLOW THE INSTRUCTION CAREFULLY.
If you make a mistake then please turn the calculator off and start over again.
====
Turn the calculator on.
GO TO Display setup screen
Disp 1
You will has two options
1 for DOT (that's not what you want)
2 for Comma (please press 2 and enter/triangle pointing to the right)
Please let me know are you able to get to setup mode and make the comma change on reply.

Hi,

P12c display from Comma to Point This document describes how to change the display of the decimal point on the HP 12C (HP12C) Calculator from a comma (commas) back to a decimal point.
Instructions

1. Turn off the calculator.
2. Hold down the decimal point.
3. Continue to hold the decimal point key, while turning on the calculator.

The comma should change back to a decimal point.
Explanation The comma is the European equivalent of the decimal point.
This procedure is also applicable to HP12CP (Hewlett-Packard 12c Platinum) and HP12CPA (Hewlett-Packard 12c Platinum 25th Anniversary Edition).

Let me know, if needed further assistance.

Hope i helped you.

Thanks for using ' Fixya ' and have a nice day!!

Hello,
I am not sure if you can prevent the comma (the thousands separator) from appearing, in general. But if you are not averse to using Scientific or Engineering notations, you will not have to put up with the commas. (As an aside I will not mind having a bank account with 4 or 5 commas in the amount.)

Hope it helps.

Hello,
The comma is a three-digit separator that appears if number with many digits are displayed ( millions, billions). Since it is a financial calculator designed for money calculations, the comma can be helpful.
There is nothing in the manual that suggests that the three-digit separator can be removed. It can however be replaced by the point as in European Countries (especially France) where the decimal mark is the point and the three-digit separator the comma.

In short. I do not think you can get rid of the comma.

Hope you can learn to live with it.

To change the ´comma´, make sure the calculator is switched to off, press (.) key and maintain, switch the calculator ON. This operation changes dot to comma and vice-versa.