My "=" sign is not working when adding or subtracting numbers to show the total. I have to always press "+" button for that? why oh why?

Because this is an adding machine you would use the total button (*) not the = for ading and subtracting the = is only used in multiplcation and division

Posted on Apr 29, 2008

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Posted on Jan 02, 2017

Your calculator is fine. It is an adding machine first, so it uses adding machine logic and you hit the star button to print the total on the tape. The equals sign is only used when multiplying and dividing.

Adding machine logic is as follows:

5+ total 5

3- total 2

7+ total 9

* print out total

Good luck,

Paul

Adding machine logic is as follows:

5+ total 5

3- total 2

7+ total 9

* print out total

Good luck,

Paul

Sep 13, 2016 | Staples SPL-P500 Printing Calculator

It probably uses adding machine logic. Try the following example.

3+

4-

5+

*

You should get 3, -1, and 4 on the screen, the running total. The tape should show the +3, -4, +5, and finally 4, the numbers that you entered and the total. Think of each entry as adding/subtracting integers on a number line rather than 3+4-5;)

Let me know if you have any questions.

Paul

3+

4-

5+

*

You should get 3, -1, and 4 on the screen, the running total. The tape should show the +3, -4, +5, and finally 4, the numbers that you entered and the total. Think of each entry as adding/subtracting integers on a number line rather than 3+4-5;)

Let me know if you have any questions.

Paul

Feb 04, 2016 | Office Equipment & Supplies

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

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

Oct 22, 2015 | Casio Office Equipment & Supplies

Minus and change-sign are two completely different things. Minus is used to subtract one number from another. When you press minus when the input line is empty, your telling the calculator to subtract. The only way it can subtract the number you're about to put in is to subtract it from something else, and that something else is the previous answer, hence the "Ans."

If you want to input a negative number, use the change-sign key. If you want to subtract one number from another number, use the minus key.

Try pressing the plus key when the input line is empty. You'll get Ans+ in this case as well, The same with multiply and divide, among others, and for the same reason.

If you want to input a negative number, use the change-sign key. If you want to subtract one number from another number, use the minus key.

Try pressing the plus key when the input line is empty. You'll get Ans+ in this case as well, The same with multiply and divide, among others, and for the same reason.

Sep 23, 2013 | Texas Instruments TI-84 Plus Calculator

If your calculator is more of an adding machine it works a little bit differently than a calculator. For an example: 10 + 5 - 2 on your machine do the addition of 10 + 5, then to subtract the 2 press 2 then the minus sign to get the total of 13. I hope this is helpful.

Feb 06, 2011 | Canon Office Equipment & Supplies

OFF • P P•IC

ON POWER SWITCH; PRINT / ITEM COUNT MODE SELECTOR:

"OFF": Power OFF

"•": Power ON. Set to the non print mode.

"P": Power ON. Set to the print mode.

"P•IC": Power ON. Set to the print and item count mode.

1) For addition or subtraction, each time is pressed, 1 is added to the item

counter, and each time is pressed, 1 is subtracted.

• The count is printed when the calculated result is obtained.

• Pressing of , clears the counter.

2) When the grand total/rate setting mode selector is in the ON position (GT), the

counter will count the number of times that the calculation results have been

stored in the grand total memory. To print and clear the count, press the key.

3) The memory item counter will count the number of times that the key has

been pressed in the addition.

Note: • Each time the key is used in the subtraction, 1 will be subtracted from

the count.

• The count is printed when the memory is recalled.

• Pressing of the key clears the counter.

Note: The counter has a maximum capacity of 3 digits (up to ±999). If the count exceeds

the maximum, the counter will recount from zero.

ON POWER SWITCH; PRINT / ITEM COUNT MODE SELECTOR:

"OFF": Power OFF

"•": Power ON. Set to the non print mode.

"P": Power ON. Set to the print mode.

"P•IC": Power ON. Set to the print and item count mode.

1) For addition or subtraction, each time is pressed, 1 is added to the item

counter, and each time is pressed, 1 is subtracted.

• The count is printed when the calculated result is obtained.

• Pressing of , clears the counter.

2) When the grand total/rate setting mode selector is in the ON position (GT), the

counter will count the number of times that the calculation results have been

stored in the grand total memory. To print and clear the count, press the key.

3) The memory item counter will count the number of times that the key has

been pressed in the addition.

Note: • Each time the key is used in the subtraction, 1 will be subtracted from

the count.

• The count is printed when the memory is recalled.

• Pressing of the key clears the counter.

Note: The counter has a maximum capacity of 3 digits (up to ±999). If the count exceeds

the maximum, the counter will recount from zero.

Dec 17, 2010 | Sharp EL-1801P Calculator

use the + key after each number to add the total will appear on screen. When all numbers have been added, enter number to subtract and then press - key. The subtracted number will appear in read on the paper (if two color). and then press the star key to get total.

Jul 08, 2010 | Canon P23-DHV Calculator

When you want to complete a problem on an adding machine, such as "7 - 3," you would not key in "7," then the subtraction sign, then "3" and then an equal sign. If you do, then you will get an answer of "-4," and you know that is not the correct answer. Again, you have to think like an accountant when you are working with your adding machine. To figure this subtraction problem on an adding machine, you would need to key in "7," the addition sign, "3" and then the subtraction sign; you would get the answer of 4. You are actually working the problem as "7 + (-3)." This would be true on most modern day machines. In order to subtract, you have to add the negative number.

Sep 25, 2009 | Victor 1208-2 Calculator

Big calculators work a little different than handheld calculators. Like the above commentor explained, if you have a basic "whats 100 minus 20?" You have to entered as 100 + 20 -- And when you hit the minus button at the end, it will give you the total. 100 is the positive number, and the 20 is the negative number that your subtracting. Also you can hit 20 -- 100 + and get the same total because you entering 20 as the negative and 100 as the positive, just in reverse.

Jul 27, 2009 | Casio HR-100TEPlus Calculator

With an adding machine, which is what this is, you enter the number followed by the + or -. If you wanted to add 10+20, you would enter 10 then + then 20 then +. This would show your answer. If you are using the printer and you wish to see the final answer on the paper, hit the * key and your answer will print.

If you are subtracting, let's say 100-40, you would enter 100 then + then 40 then - then *. Adding machines expect you to enter long strings of numbers to total. You may have both positive and negative numbers. So, you always enter the number first followed by either positive + or negative -.

You might have 100 + 25 - 37 - 1 + 50. For that enter:

100+25+37-1-50+ then *

Different than a calculator but the same for all "adding machines". This machine should really be called an adding machine since that is the kind of input it is looking for.

If you are subtracting, let's say 100-40, you would enter 100 then + then 40 then - then *. Adding machines expect you to enter long strings of numbers to total. You may have both positive and negative numbers. So, you always enter the number first followed by either positive + or negative -.

You might have 100 + 25 - 37 - 1 + 50. For that enter:

100+25+37-1-50+ then *

Different than a calculator but the same for all "adding machines". This machine should really be called an adding machine since that is the kind of input it is looking for.

Jan 13, 2009 | Canon P23-DHV Calculator

Jun 25, 2014 | Canon P23-DH Calculator

Jun 13, 2014 | Canon P23-DH Calculator

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