**Scientific Calculator**

__Terms of a scientific calculator__

Here are the explanations of the terms usually shown in a scientific calculator:

**STO:** STO stands for "Store." It is used to store a value into a memory location for later use.

**RCL:** RCL stands for "Recall." It is used to recall a value from a memory location and use it in calculations.

**DEL:** DEL is the delete key, and it is used to delete a single digit or character at a time when entering numbers or performing calculations.

**AC:** AC stands for "All Clear." It is used to clear the calculator's memory and reset it to its initial state.

**EXP:** EXP is short for "Exponential." It is a function used to calculate the exponential value of a number. For example, if you enter "EXP(2)" on the calculator, it will give you the value of e^2 (where e is Euler's number).

**CALC:** CALC is short for "Calculate." It is a key used to perform calculations and obtain the result.

**Ran#:** Ran# represents a random number function. It generates a random number between 0 and 1.

**Rnd:** Rnd stands for "Round." It is used to round off a number to a specified number of decimal places or significant figures.

**Logic:** Logic refers to logical operations such as AND, OR, NOT, and XOR. Scientific calculators may have built-in logic functions for binary calculations.

**ENG:** ENG stands for "Engineering" notation. It is a mode that allows numbers to be displayed in scientific notation with a power of 10 that is a multiple of 3 (e.g., 1.23E+6 instead of 1,230,000).

**hyp:** Hyp stands for "Hyperbolic." It is a mode that allows the calculator to perform calculations using hyperbolic trigonometric functions (e.g., sinh, cosh, tanh).

**DRG:** DRG stands for "Degree, Radian, Gradient." It is a mode that allows you to select the unit of measurement for angles—degrees, radians, or gradients.

**nPr:** nPr stands for "Permutation." It is a mathematical function used to calculate the number of permutations of selecting r items from a set of n items, considering the order of selection.

**nCr:** nCr stands for "Combination." It is a mathematical function used to calculate the number of combinations of selecting r items from a set of n items, irrespective of the order of selection.

**Mcl:** Mcl stands for "Memory Clear." It is used to clear the memory of the calculator, erasing any previously stored values.

**Scl:** Scl stands for "Scale." It is used to change the scale or units of a displayed value, such as switching between decimal and scientific notation.

**Pol(** and **Rec(**: Pol( stands for "Polar." It is used to convert rectangular coordinates to polar coordinates, while Rec( stands for "Rectangular" and is used to convert polar coordinates to rectangular coordinates.

**INS:** INS stands for "Insert." It is used to insert a digit or character at the current cursor position when entering values or performing calculations.

**DT:** DT stands for "Data Table." It is a feature on some scientific calculators that allows you to store and manipulate data in a table format.

**CL:** CL stands for "Clear." It is used to clear the display, removing any previously entered numbers or results.

**DISTR:** DISTR stands for "Distribution." It is a function used to calculate probabilities and statistics for various probability distributions, such as the normal distribution or binomial distribution.

**Re-Im:** Re-Im stands for "Real-Imaginary." It is used to perform calculations involving complex numbers, allowing you to separate the real and imaginary parts of a complex number.

__Logic:__We have been learning '0 to 9' one digit and '11 to 99 two digit counting method' for number counting and this is the standard but it is not the end; There are a few more variations, here they are --

**Logic:** Logic refers to logical operations performed on binary numbers. In the context of a scientific calculator, it typically includes logical operations like AND, OR, XOR, and NOT. These operations are used to manipulate binary values and perform logical computations.

__Logic:__

0 to 9 .... 1. Decimal

0 to F .... 2. Hexadecimal

0 & 1 .... 3. Binary

0 to 8 .... 4. Octal

**Dec:** Dec is short for "Decimal." It is a numerical system commonly used by humans, based on the base-10 numbering system. In a scientific calculator, the Dec mode allows you to perform calculations and input numbers in decimal format.

**Hex:** Hex is short for "Hexadecimal." It is a numerical system commonly used in computing and digital systems. Hexadecimal numbers use a base-16 numbering system, which includes digits from 0 to 9 and letters A to F. In a scientific calculator, the Hex mode allows you to perform calculations and input numbers in hexadecimal format.

**Bin:** Bin is short for "Binary." It is a numerical system that uses a base-2 numbering system. Binary numbers consist of only two digits, 0 and 1, and are widely used in computing and digital systems. In a scientific calculator, the Bin mode allows you to perform calculations and input numbers in binary format.

**Oct:** Oct is short for "Octal." It is a numerical system that uses a base-8 numbering system. Octal numbers consist of digits from 0 to 7. Octal numbers are commonly used in computing and digital systems. In a scientific calculator, the Oct mode allows you to perform calculations and input numbers in octal format.

These modes on a scientific calculator enable you to switch between different numerical systems to perform calculations and conversions in the desired base. Each mode allows you to work with numbers and perform operations specific to that numerical system, providing flexibility and convenience when dealing with different number representations.

__Memory__** STO & ALPHA**: Storage (STO) the value in alphabets (ALPHA) A B C D E F X Y and M; for use Recall (RCL) from alphabets. Storage M is exceptional it will be adjusted with previous one considering Plus and Minus.

**Answer (Ans) Memory:** Answer (Ans) memory contents always last answer of the calculation and possible to use best answer from Ans.

__Multiplication Table__

**Answer Memory** always contains the last answer, so if you want to make a multiplication table, the base-number of the table must be recorded as the answer/ Ans.

Then, ** in display row** Answer will be added by the base-number of the table.

**eg Multiplication table of 12.**

**Ans + 12 = (Result)**

**Each Press**on equal sign (=) will display the specified multiplication table result.

__Model of calculators__Several scientific plus graphing calculators with advanced features --

**Texas Instruments TI-Nspire CX CAS:

**Casio FX-991EX:

**HP 50g:

**Sharp EL-W516XBSL:

**Canon F-792SGA:

**Casio ClassPad II FX-CP400+: