Texas Instruments TI - 40 User Manual
-1-
TI
½
40 Collège
×
Scientific Calculator
Texas Instruments
7800 Banner Dr.
Dallas, TX 75251 U.S.A.
7800 Banner Dr.
Dallas, TX 75251 U.S.A.
Texas Instruments Holland B.V.
Rutherfordweg 102
3542 CG Utrecht - The Netherlands
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
TI
keystroke examples that demonstrate many of the
TI
N
40 Collège
Ö
functions. Examples assume all default
settings.
&
turns on the TI
N
40 Collège
Ö
.
%
'
turns it off and
clears the display. APD™ (Automatic Power Down™) turns
off the TI
off the TI
N
40 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
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.
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
2nd function.
FIX
Fixed-decimal setting.
STAT
Statistical mode.
RAD
Angle mode set to radians.
ÄÄ
Q
ÄÄ
ÄÄ
R
ÄÄ
Displays quotient (
Q
) and remainder (
R
) for
integer divide result.
N/D
¹
n/d
The fraction result can be further simplified.
º
»
An entry is stored in memory before and/or
after the active screen. Press
after the active screen. Press
#
and
$
to
scroll.
¹
¸
An entry or menu displays beyond 11 digits.
Press
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,
pressed. For example,
%
b
25
E
<
calculates the
square root of 25 and returns the result, 5.
Menus: Certain TI
N
40 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
item, press
-
. To select a menu item:
¦
Press
<
while the item is underlined, or
¦
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.
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
TI
TI
N
40 Collège
Ö
memory. You cannot retrieve previous
entries while in
STAT
mode.
Last Answer
%
i
The most recently calculated result is stored to the variable
Ans. Ans is retained in memory, even after the
TI
Ans. Ans is retained in memory, even after the
TI
N
40 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 TI
N
40 Collège
Ö
uses EOS
é
(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 R
such as the sin, log, and all R
Í
P menu items.
3rd
Fractions.
4th
Functions that are entered after the argument, such
as x
as x
2
and angle unit modifiers (
Ä
Å
Æ
r
g
).
5th
Exponentiation (^) and roots (x
Ñ
).
6th
Negation (
M
).
7th
Permutations (nPr) and combinations (nCr).
8th
Multiplication, implied multiplication, division.
9th
Addition and subtraction.
10th Conversions (Ab
Ì
c
Í
d
Ì
e,
4
F,
4
D,
4
%,
4
DMS).
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.
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
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
you press
J
.
%
f
Inserts a character at the cursor.
%
{
Clears all memory variables.
%
t
CLRDATA
Clears all data points without exiting
STAT
mode.
%
w
Y
Clears all data points and exits
STAT
mode.
%
Y
or
&
&
-
Resets the TI
N
40 Collège
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. Returns unit
to default settings; clears memory
variables, pending operations, all entries in
history, and statistical data; clears
constant mode and
variables, pending operations, all entries in
history, and statistical data; clears
constant mode and
Ans
.
Math Operations
d
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.
expressions which equal return a real number.
%
`
separates 2 values.
abs(#)
Displays absolute value of
#
.
round(#,digits) Rounds
#
to specified number of digits.
iPart(#)
Returns only the integer part (iPart) or