Typing on a keyboard
You do not have to click the keys. With the calculator focused, your physical keyboard maps onto the handheld like this.
| Press | Does |
|---|---|
| 0 – 9 and . | Digits and the decimal point |
| + - * / ^ | Add, subtract, multiply, divide, power |
| ( ) , | Parentheses and the argument separator |
| Enter or = | ENTER — evaluates the line |
| Backspace or Delete | DEL — deletes the character at the cursor |
| Escape | CLEAR — clears the entry line |
| ↑ ↓ ← → | Moves the cursor, and scrolls back through history |
| X | Types the X,T,θ,n variable |
| Any letter | Types that letter, so you can type sin( or L1 directly |
Maths menus
Fractions, roots, calculus templates, number tools and the comparison operators.
Statistics and data
Entering data in lists, summarising it, fitting regressions and the probability distributions.
Graphing
Window presets, the CALC analysis tools, stat plots and the stored function and window variables.
System and full catalogue
Memory, resets and the alphabetical list of every command the simulator understands.
Error messages
When the simulator cannot produce an answer it shows the same message the handheld would, rather than guessing.
| Message | Cause |
|---|---|
ERR: SYNTAX | The expression cannot be read — usually a stray operator, or [-] used where [(-)] was meant. |
ERR: DOMAIN | The value is outside what the function accepts, such as a negative argument to ln( or a probability above 1. |
ERR: DIVIDE BY 0 | Division by zero. |
ERR: NONREAL ANS | The answer is a complex number. This simulator works in REAL mode. |
ERR: OVERFLOW | The result is larger than the calculator can hold (about 1E100). |
ERR: ARGUMENT | The function was given the wrong number of arguments. |
ERR: DIM MISMATCH | Two lists have different lengths, or a list is empty. |
ERR: STAT | A statistics command ran with no data, or with data it cannot use. |
ERR: NO SIGN CHANGE | A root finder found no sign change between the bounds you gave. |
ERR: BOUND | The lower bound is not below the upper bound. |
ERR: TOL NOT MET | The answer could not be found to the required accuracy. |
ERR: DATA TYPE | A number was expected where a list was given, or the other way round. |
ERR: UNDEFINED | A variable or list used in the expression has no value stored. |
What is not simulated
These keys exist on the handheld but do not do their real job here. Pressing one says so on screen instead of failing silently.
| Key | Why |
|---|---|
| APPS | Flash apps are not available in this online simulator. |
| PRGM | TI-BASIC programs are not available yet. |
| DRAW | Drawing commands are not available yet. |
| LINK | Linking calculators is not possible in a browser. |
| RCL | Type the variable name directly instead (e.g. ALPHA A). |
| Complex numbers | This simulator works in REAL mode (no a+bi results). |
| Sequence mode | Sequence graphing is not available yet. |
| Shortcut menu | This shortcut menu is not available yet. |