Microsoft Windows NT 4.0 Guide Guide de l'utilisateur télécharger pdf (Page 109)

Chapter 4 Using the Microcal Diagnostic Utility 109

How Terminal Mode Displays Characters

Carriage returns and line feed characters are not displayed but will

move the cursor. Carriage returns also cause a line feed.

Characters with an ASCII value of less than 32 or greater than 127

appear as characters in the IBM-PC extended character set. It may be

useful to obtain a copy of the IBM character set.

How Terminal Mode Displays Touch Coordinates

Touching the screen when in terminal emulation mode results in the

display of the X, Y screen position.

The touchscreen controllers output data in format tablet (binary).

However, displaying the X, Y screen position as binary output is not

useful. Therefore, the Microcal Terminal Emulation program

automatically converts the binary data to decimal format and displays

the X, Y coordinate using a scale of 0 – 999.

For a properly calibrated controller, the lower left corner of the

touchscreen is at [0, 0]. The upper right corner of the touchscreen is

at [999, 999]. The following illustration shows the X, Y position

returned when you touch the corners of the screen.

Some earlier touchscreen controllers support several data formats. If

you are using these controllers, send a Format Decimal command to

change the controller’s output format. After the controller is in

Format Decimal, touching the screen displays the X, Y coordinate

using a scale of 0 – 999 as described above.

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Microsoft Windows NT 4.0 Guide Guide de l'utilisateur Page 109