Texas Instruments TI-40 College II User Manual

TI½40 Collège ×
Scientific Calculator
Texas Instruments
7800 Banner Dr.
Dallas, TX 75251 U.S.A.
Texas Instruments Holland B.V.
Rutherfordweg 102
3542 CG Utrecht - The Netherlands
¾
www.ti.com/calc
1999 Texas Instruments Incorporated
General Information
Examples: See the last page of these instructions for
keystroke examples that demonstrate many of the
TIN40 Collège Ö functions. Examples assume all default
settings.
& turns on the TIN40 Collège Ö. % ' turns it off and
clears the display. APD™ (Automatic Power Down™) turns
off the TIN40 Collège Ö automatically if no key is pressed
for about 5 minutes. Press & after APD. The display,
pending operations, settings, and memory are retained.
2-Line Display: The first line (Entry Line) displays an entry
of up to 88 digits (or 47 digits for Stat or Constant Entry
Line). Entries begin on the left; those with more than 11
digits scroll to the right. Press ! and " to scroll the line.
Press % ! or % " to move the cursor immediately to
the beginning or end of the entry.
The second line (Result Line) displays a result of up to 10
digits, plus a decimal point, a negative sign, a "x10" indicator,
and a 2-digit positive or negative exponent. Results that
exceed the digit limit are displayed in Scientific Notation.
Indicator Definition
2nd function.
2nd
Fixed-decimal setting.
FIX
Statistical mode.
STAT
Angle mode set to radians.
RAD
Displays quotient (
ÄÄQÄÄ
integer divide result.
ÄÄRÄÄ
The fraction result can be further simplified.
N/D¹n/d
An entry is stored in memory before and/or
º »
after the active screen. Press # and $ to
scroll.
An entry or menu displays beyond 11 digits.
¹ ¸
Press ! or " to scroll.
2nd Functions: % displays the 2nd indicator, and then
selects the 2nd function (printed above keys) of the next key
pressed. For example, % b 25 E < calculates the
square root of 25 and returns the result, 5.
Menus: Certain TIN40 Collège Ö keys display menus:
z, % h, L, d, % ~,
% A, % B, % t, u,
% w, H, % I, =, % k, % ‚,
and % .
Press ! or " to move the cursor and underline a menu
item. To return to the previous screen without selecting the
item, press -. To select a menu item:
¦ Press < while the item is underlined, or
) and remainder ( ) for
Q R
¦ For menu items followed by an argument value, enter the
argument value while the item is underlined. The item and
the argument value are displayed on the previous screen.
Previous Entries
After an expression is evaluated, use # and $ to scroll
through previous entries, which are stored in the
TIN40 Collège Ö memory. You cannot retrieve previous
entries while in
STAT
Last Answer
The most recently calculated result is stored to the variable
Ans. Ans is retained in memory, even after the
TIN40 Collège Ö is turned off. To recall the value of Ans:
¦ Press % i (Ans displays on the screen), or
¦ Press any operations key (T, U, F, etc.) as the first
part of an entry. Ans and the operator are both displayed.
Order of Operations
The TIN40 Collège Ö uses EOSé (Equation Operating
System) to evaluate expressions.
1st Expressions inside parentheses.
2nd Functions which need a ) and precede the argument,
such as the sin, log, and all RÍP menu items.
3rd Fractions.
4th Functions that are entered after the argument, such
and angle unit modifiers (Ä Å Æ
as x
2
Exponentiation (^) and roots ( x Ñ).
5th
6th Negation (M).
7th Permutations (nPr) and combinations (nCr).
8th Multiplication, implied multiplication, division.
9th Addition and subtraction.
10th Conversions (AbÌcÍdÌe, 4F, 4D, 4%, 4DMS).
11th < completes all operations and closes all open
parentheses.
Clearing and Correcting
-
Clears an error message.
Clears characters on the entry line.
Moves the cursor to last entry in history
once display is clear.
J
Deletes the character at the cursor.
Deletes all characters to the right when
you hold down J; then, deletes 1
character to the left of the cursor each time
you press J.
% f
Inserts a character at the cursor.
% {
Clears all memory variables.
% t Clears all data points without exiting
mode.
CLRDATA
% w Clears all data points and exits
Y
%  Resets the TIN40 Collège Ö. Returns unit
Y
or to default settings; clears memory
variables, pending operations, all entries in
& & -
history, and statistical data; clears
constant mode and
Math Operations
d displays a menu with various math functions. Some
functions require you to enter 2 values, real numbers or
expressions which equal return a real number. % `
separates 2 values.
abs(#) Displays absolute value of
round(#,digits) Rounds
iPart(#) Returns only the integer part (iPart) or
-1-
mode.
% i
r g
).
STAT
.
Ans
.
#
to specified number of digits.
#
# $
STAT
mode.
d