Texas Instruments TI-73 EXPLORER 用户手册

     Chapter 10: Drawing

7310ENG.DOC   Draw   Texas Instruments   Revised: 05/29/98 6:43 PM   Printed: 05/19/99 9:01 AM   Page 202 of 22

 

2

 

  "

 

, 

, and 

 turn on, off, or change the status

of a point from the Graph screen, Home screen, or Program

editor.
A point (as opposed to a pixel) is tied directly to the X- and Y-

axes. The screen is divided into X- and Y-coordinates as

specified by (X,Y). The points that you can view depend upon

how the 

 values are defined.

For example, if standard 

 values are set, M10X10 and

M10Y10. This does not mean that points outside these

boundaries do not exist, only that you cannot see any turned

on points outside these boundaries.

 

To use 

, 

, and 

 on the Graph screen:

1. From the Graph screen, select 2 " 

, 

, or 

. The

cursor appears in the middle of the Graph screen. The X-

and Y-coordinates are shown at the bottom of the screen.

2. Move the cursor:

• 

To the position where you want to draw the point

(

).

• 

To the position of the point you want to erase

(

 ).

• 

To the position of the point you want to change

(toggle on or off) (

 ).

3. Press b to draw, erase, or change the point.
4. Repeat steps 2 and 3, as necessary. To cancel 

,

, or 

, press :.