TI-85 HANDBOOK GETTING STARTED
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To switch the calculator on press [ON] which is located at the lower left hand corner of the calculator. To turn the calculator off press [2nd] [ON].
The brightness and contrast of the display varies from 0 (lightest) to 9 (darkest). To adjust the contrast:
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: increase contrast : decrease contrast |
The primary functions associated with the keys are written in white on the keys.
The secondary functions are written in yellow above the keys. To access the secondary functions press the yellow [2nd] key followed by the desired function key.
Text characters are written in blue above the keys. To access a character press the blue [ALPHA] key followed by the appropriate key - the cursor changes to [A]. To ‘lock’ the alpha key press [ALPHA] twice. To access lower case letters press [2nd] [ALPHA].
The TI-85 evaluates an expression in the order of the operation - the keying sequence is read from left to right.
Additional screens and menu bars provide functions and operations which are not represented by the keys on the calculator face.
For example, look at the multiplication key [ x ] above this we see [MATH] written in yellow. To access this menu press [2nd] [ x ], this gives a menu of additional mathematical functions :
Menu items are shown at the bottom line(s) of the display screen. The arrow at the extreme right of the menu bar indicates that there are more items on the menu. To move around the menu use the [MORE] key. To select a menu item from the bottom line of the display press the corresponding [F ] key below the item.
For example, press [F1] in the MATH menu to access a menu of number functions. Select an item from this menu, say [iPart] by pressing [F1]. We have selected a function which rounds off a number to a given number of decimal places - the expression is round(number, number of decimal places). Note that when an item is selected from the menu the name is copied to the cursor location in the working area of the screen:
To exit a menu press [EXIT]
The calculator saves the answer to the previous computation, [ANS], to access this press: [2nd] [(-)].
To call the previous expression [ENTRY], after performing a calculation, press [2nd] [ENTER].
To store a value in a memory location use the [STO>] key followed by the alpha name you wish to store it as.
The keys with the arrows, situated at the upper right hand corner of the calculator, can be used to move the cursor.
Characters can be deleted or inserted by using the [DEL] or [2nd] [DEL] (which accesses [INS]) respectively.
To clear the memory of your calculator, press [2nd] [MEM] [F3] [F1] [F4]. A useful check appears on the screen to allow for a change of mind:
The available screens, [2nd] and appropriate key, include:
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MODE |
setting the operating mode of the calculator | ||
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SOLVER |
entering multi-variable equations | ||
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SIMULT |
entering a system of equations | ||
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POLY |
entering polynomials | ||
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CATALOG |
a list of all the functions on the TI-85 | ||
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TOLER |
tolerance settings | ||
Available menu bars, key or [2nd] and appropriate key, include:
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EXIT |
remove a menu bar from the screen | ||
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MORE |
to see more of a menu bar | ||
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LINK |
communicate between two TI-85 calculators | ||
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GRAPH |
graphing features | ||
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STAT |
statistical features | ||
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PRGM |
entering and executing programs | ||
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CUSTOM |
customise users requirements | ||
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CALC |
calculus features | ||
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MATRX |
entering and manipulating matrices | ||
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VECTR |
entering and manipulating vectors | ||
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CPLX |
complex number features | ||
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MATH |
additional mathematical functions | ||
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CONS |
constants | ||
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CONV |
units of measure conversions | ||
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STRNG |
enter and use strings in programming | ||
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LIST |
identify, create, enter and edit lists | ||
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BASE |
access characters from other bases | ||
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TEST |
mathematical relations | ||
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VARS |
access names of variables | ||
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MEM |
memory management | ||
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CHAR |
additional characters - including Greek characters | ||
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