Entering consecutive entries, The busy indicator, Interrupting a calculation or graph – Texas Instruments TI-86 User Manual

Page 38

Chapter 1: Operating the TI

-86

01OPER.DOC TI-86, Chap 1, US English Bob Fedorisko Revised: 02/13/01 2:18 PM Printed: 02/13/01 2:59 PM Page 26 of 22

When you select a function, instruction, or operator, a symbol comprising one or more
characters is pasted to the cursor location. Once the symbol is pasted to the cursor
location, you can edit individual characters.

For example, assume that you pressed - w / / * & & b to paste

yMin

to the cursor location as part of an expression. Then you realized you wanted

xMin

Instead of pressing nine keys to select

xMin

, you can simply press ! ! ! ! 2.

Entering Consecutive Entries

To enter two or more expressions or instructions
consecutively, separate each from the next with a colon
(- ). When you press b, the TI

-86 executes

each entry from left to right and displays the result of the last expression or instruction. The
entire group entry is stored in last entry (page 28).

The Busy Indicator

When the TI

-86 is calculating or graphing, a moving vertical line is displayed as the busy

indicator in the top-right corner of the screen. When you pause a graph or a program, the
busy indicator is replaced by the pause indicator, a moving vertical dotted line.

Interrupting a Calculation or Graph

To interrupt a calculation or graph in progress, press ^. When you interrupt a calculation,
the

ERROR 06 BREAK

message and menu are displayed.

♦

To return to the home screen, select

QUIT

(press *).

♦

To go to the beginning of the expression, select

GOTO

(press &). Press b to

recalculate the expression.

In the example, the

symbol

indicates that the value
before it is to be stored to the
variable after it (Chapter 2).
To paste

to the screen,

press