Calculator is on, input (2000 x 15% = 300). Attempt sto 2000 using shift key, and rcl (recall) for later use was not successfull. Lost manual. this is a good calculator, but this memory function is not cooporating. Please help.
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You have one key RCL /STO, and a few memory locations A, B, C,D, M
To store a number in memory location A
Type in the number, press STO and press ALPHA A (It is possible you do not have to press ALPHA key)
To recall from memory A, press RCL A
For simple scientific calculators, you have a certain number of memory locations A, B, C, D, X,Y, M. Maybe more,
To store a value in a memory location you use the [STO] or
[SHIFT] [RCL] (STO) sequence.
15 [STO] A (displays 15)
[RCL] A (displays 15)
For graphing calculator, you have 26 memory locations, one in each letter. You use the STO key to store as above. You may also have the possibility to store programs, and on certain models a text editor.
To store a number into memory, press SHIFT [STO] and the name of the desired memory register. To recall a number from memory, press RCL and the name of the memory register.
Available memory registers are A, B, C, D, X, Y, and M. Those are on the fourth and fifth rows of the keyboard (the two rows immediately above the 7, 8, 9, DEL, AC row). You don't need to press SHIFT or ALPHA to access these names after the STO or RCL.
You can store values in the memory locations A,B,C,D,X and Y. To access these variables, you must precede the key by pressing [ALPHA]. Thus to access Memory variable A press [ALPHA][(-)].
To store a number in memory A Press [SHIFT][RCL] (STO) . When you use the shifted key to store no need to press [ALPHA]. To recall the contents of memory A, just press [RCL] followed by [(-)]. No need to press [ALPHA] Say you want to calculate 3 5 and assign value to memory A 3 5 [SHIFT][RCL] [(-)] A. Similar sequences for B,C,D, X, and Y.
I am not sure about the Casio FX300ES but the FX-991ES does have a solver mode. On that calculator, to enter the = sign in an algebraic equation use the [ALPHA] key followed by a key on the top left of keypad ( Could be CALC).
I suggest you refer to the manual for the calculator for examples of use for the memory keys. Look in the separate Appendix too.