The keyboard, key by key

2.1Graphing keys (top row)#

The five keys under the screen open the graphing screens. After alpha they are named F1 to F5 on the keycaps, but this calculator does not use those names for anything.

Key	Primary	2nd layer	alpha layer
y=	Opens the Y= editor where you type functions to graph.	STAT PLOT: opens the statistics plot menu.	F1 (not used).
window	Opens the WINDOW screen: the part of the plane that is shown.	TBLSET: table start, step and Auto/Ask.	F2 (not used).
zoom	Opens the ZOOM menu of quick views.	FORMAT: grid, axes, coordinates, labels.	F3 (not used).
trace	Moves a cursor along a graph and shows its coordinates.	CALC: value, zero, minimum, maximum, intersect, dy/dx and integral.	F4 (not used).
graph	Draws the graph.	TABLE: shows the table of X and Y values.	F5 (not used).

2.2Editing and cursor keys#

Key	Primary	2nd layer	alpha layer
2nd	Makes the next key use its blue legend.
alpha	Makes the next key type its green letter.	A-LOCK: keeps typing letters until you press alpha again.
mode	Opens the MODE settings.	QUIT: returns to the home screen.
del	Deletes the character under the cursor.	INS: switches between overwrite and insert.
◀	Moves the cursor left; in a table or menu moves to the previous tab or column.	Jumps to the start of the line.
▶	Moves the cursor right; in a table or menu moves to the next tab or column.	Jumps to the end of the line.
▲	Moves up; on the home screen selects earlier lines for reuse.
▼	Moves down.
X,T,θ,n	Types X. In parametric mode it types T, and in polar mode θ.	LINK (not available).
clear	Clears the entry line; on an empty line clears the home screen; leaves a menu.
enter	Calculates the line, chooses a menu item or confirms a field.	ENTRY: brings back the previous entry.	SOLVE: solves for the highlighted variable in the equation solver.
on	Wake the calculator. It is always on in this app, and on a running program it stops the program.	OFF (not available).

2.3Menu keys#

Key	Primary	2nd layer	alpha layer
math	MATH menu: fractions, roots, numeric calculus, NUM, CMPLX, PROB, FRAC tabs and the solver.	TEST: comparison signs and logic words.	Types the letter A.
apps	APPLICATIONS list (empty in this version).	ANGLE: degree, minute and radian marks, DMS and polar conversions.	Types the letter B.
prgm	PRGM: run, edit or create a program. Inside the program editor: CTL, I/O and EXEC command menus.	DRAW: drawing commands.	Types the letter C.
vars	VARS: window, zoom, statistics, table and string variables; Y-VARS function names.	DISTR: probability distributions.
stat	STAT menu: edit lists, CALC statistics and regressions, TESTS.	LIST menu: names, operations and math.
x⁻¹	Reciprocal: raises to the power −1.	MATRIX menu.	Types the letter D.

2.4Scientific keys#

Key	Primary	2nd layer	alpha layer
sin	Sine.	Inverse sine (sin⁻¹).	Types E.
cos	Cosine.	Inverse cosine (cos⁻¹).	Types F.
tan	Tangent.	Inverse tangent (tan⁻¹).	Types G.
^	Raises to a power.	Types π.	Types H.
x²	Squares the previous value.	Square root.	Types I.
,	Separates arguments.	Types ᴇ, times a power of ten.	Types J.
(	Opens a bracket.	Types a left curly brace { for lists.	Types K.
)	Closes a bracket.	Types a right curly brace } for lists.	Types L.
÷	Divides.	Types e (2.718…).	Types M.
log	Base-10 logarithm.	Ten to a power (10^).	Types N.
ln	Natural logarithm.	e to a power (e^).	Types S.

2.5Number pad and arithmetic keys#

Key	Primary	2nd layer	alpha layer
7	Types 7.	Types the letter u (for sequences, not used here).	Types O.
8	Types 8.	Types the letter v.	Types P.
9	Types 9.	Types the letter w.	Types Q.
×	Multiplies.	Types a left square bracket [ for matrices.	Types R.
4	Types 4.	Types list name L4.	Types T.
5	Types 5.	Types list name L5.	Types U.
6	Types 6.	Types list name L6.	Types V.
−	Subtracts.	Types a right square bracket ].	Types W.
1	Types 1.	Types list name L1.	Types Y.
2	Types 2.	Types list name L2.	Types Z.
3	Types 3.	Types list name L3.	Types θ.
+	Adds.	MEM: opens the memory menu.	Types a double quote " for text.
sto→	Stores a value in a variable (the arrow →).	RCL: recalls a variable, list or Y= function into the entry line.	Types X.
0	Types 0.	CATALOG: the alphabetical list of every command.	Types a space.
.	Decimal point.	Types the imaginary unit i.	Types a colon :.
(−)	Negative sign for a number. Not the same as subtract.	Ans: the last answer.	Types a question mark.

TI-84 Plus CE is a trademark of Texas Instruments Incorporated. Trident Calculator is an independent product by South View Studios and is not affiliated with, sponsored by or endorsed by Texas Instruments. The name is used only to describe the kind of calculator this model resembles; Trident's names, keys, display, fonts and software are its own clean-room design.