When I introduce a 10^-4 I get 1E-4, how do I change it to decimals, no "E". -thanks

Let's do the preocess so it will work on any calculator.

As an example, convert 68 from decimal to binary.

The decimal columns are 10^0, 10^1, 10^2, 10^3, etc.

The binary columns are 2^0, 2^1, 2^2, 2^3, etc.

Flipping to the normal left to right, we get 2^6, 2^5, 2^4, 2^3, 2^2, 2^1, 2^0.

64 32 16 8 4 2 1

We divide our number, 68, by 64, and get 1 with a remainder of 4. We next divide our remainder by 32, 16, 8, and finally 4, where we get 1 with no reminder.

In binary, this works out to 1000100. To check, we multiply the ones by the respective column values and get 64 + 4 = 68.

Good luck.

Paul

At first, set Mode to Radian and then type sin(7pi/4). If you still getting decimal value type key Ans and then Frac.
See captured image.

is the a decimal point selector?....If so it is set 1 decimal off

Initial Setup

One adjustment is important before we get started. By default the 12C displays only two decimal places. This is not enough. Personally, I like to see five decimal places, but you may prefer some other number. To change the display, press "F" and then the number of decimal places you wish to display. I would press "F 5 " to display 5 decimal places. That's it, the calculator is ready to go.
You need to hold the "F" key.---------

1. Press and release the gold PREFIX key (f).
2. Press the number key for the desired number of decimal places (0 through 9).

------------ Click this link below and follow the procedure:--- http://howtobyme.blogspot.com/2011/07/hp-12c-calculator-help.html ----------- This should help.Thanks.Helpmech.

CUT: Values are cut off to the number of decimal places speicified by the current Decimal Place Selector setting

UP: Values are rounded up to the number of decimal places speicified by the current Decimal Place Selector setting

5/4: Values are rounded off (0,1,2,3,4 are cut off; 5,6,7,8,9 are rounded up) to the number of decimal places speicified by the current Decimal Place Selector setting

It is there to remind you that the result display format is set to a fixed number of decimal digits. If you change the setting to SCI, NORM1, NORM2 or ENG, the one you choose will be be displayed. So you will always have something displayed there. Do you still have enough reasons to want to get rid of it?
Here is how to modify the setting
Press SETUP
Select 1:FSE
Select one of the 4 options: 0:FIX, 1:SCI, 2:ENG, 3:NORM1, or 4:NORM2

If you choose FIX, SCI or ENG, you will be prompted to specify the number of decimal digits (0 to 9).
You might want to select NORM1 or NORM2.
Then select the number of decimal digits to display

To switch the radix point between US and European modes, turn off the calculator, press and hold the decimal point key, press and release the ON key, then release the decimal point key.

Hello,
If I am guessing correctly, you want to change the number of decimal digits in your results. To do so, you press the [f] key followed by the number of decimal digits you want. The number of digits you enter must be between 0 and 9

Exemple
14.87456320
[f] 4 displays the above number as 14.8746

Hope it helps.
Thank you for using FixYa.

The function is called ROUND. It has 2 arguments, (1) the original number and (2) the number of decimal digits. Here is the Excel's help: ROUND(number,num_digits) The number you want to round. • None. num_digits The number of digits to which you want to round number. • If num_digits is greater than 0 (zero), then number is rounded to the specified number of decimal places. • If num_digits is 0, then number is rounded to the nearest integer. • If num_digits is less than 0, then number is rounded to the left of the decimal point.
So for your case use this in a cell "=ROUND(12350*32.75%, 0)" without quotes, where I assume one or both numbers will come from other cells. -Ken

To enter the date 1. Be sure to switch to "rate set" from GT 2. Enter the month 3. Press the decimal point 4. Enter the day 5. Press the decimal point 6. Enter the year Example 3.09.2007 7. Press the button that look like a clock/calendar To enter the time 1. Be sure to switch to "rate set" from GT 2. Enter the hour (please use military time) 3. Press the decimal 4. Enter the minutes Example: 13.24 or 9.24 5. Press the button that look like a clock/calendar Then change the "rate set" back to the GT setting.