Texas Instruments TI-84 Plus C, Начало работы

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34 Getting Started with the TI-84 Plus C Silver Edition
ENTRY (Last Entry) Storage Area
Using ENTRY (Last Entry)
When you press
Í
on the home screen to evaluate an expression or
execute an instruction, the expression or instruction is placed in a storage
area called ENTRY (last entry). When you turn off the TI-84 Plus C, ENTRY
is retained in memory.
To recall ENTRY, press
y [
. The last entry is pasted to the current
cursor location, where you can edit and execute it. On the home screen
or in an editor, the current line is cleared and the last entry is pasted to
the line.
Because the TI-84 Plus C updates ENTRY only when you press
Í
, you
can recall the previous entry even if you have begun to enter the next
expression.
5
Ã
7
Í
y [
Note : You can also scroll up through previous entries and answers on the
home screen, even if you have cleared the screen. When you find an
entry or answer that you want to use, you can select it and paste it (press
Í
) on the current entry line. List and matrix answers cannot be
copied and pasted to the new entry line.
For more information on copying and pasting previous entries, see
Scrolling Through Previous Entries on the Home Screen earlier in this
chapter.
Clearing ENTRY
Clear Entries
(Chapter 18 in the guidebook) clears all data that the
TI-84 Plus C is holding in the ENTRY storage area, and clears the home
screen history.
Using Ans in an Expression
When an expression is evaluated successfully from the home screen or
from a program, the TI-84 Plus C stores the answer to a storage area
called
Ans (last answer). Ans may be a real or complex number, a list, a
matrix, or a string. When you turn off the TI-84 Plus C, the value in
Ans
is
retained in memory.