User guide

8.2 Options

Table 24: Options Available on VK204-25

Extended Temperature E

Wide Voltage V

Wide Voltage with Efﬁcient Switching Power Supply VPT

9 Appendix: Glossary

Table 25: Appendix: Glossary

ASCII American Standard Code for Information Interchange.

A 7 bit binary code representing the English alpha-

bet, decimal numbers and common punctuation marks.

Also includes control characters such as carriage re-

turn or end of text. An 8 bit superset of the standard

ASCII codes is often used today to include foreign

characters and other symbols. These supersets are of-

ten called extended ASCII character sets

Backlight A backlit display is illuminated from behind to provide

nighttime and improved daytime readability

Binary Number The (data and signaling) bit transmission rate of an

RS232 device

Bit A number written using binary notation which only

uses zeros and ones

Bitmap A representation, consisting of rows and columns of

dots, of a graphics image in computer memory. The

value of each dot (whether it is ﬁlled in or not) is stored

in one or more bits of data

Byte A grouping of eight binary bits

CCFL Cold Cathode Fluorescent Lamp. A high brightness

backlighting source consists of a ﬂuorescent tube pow-

ered by a high voltage A.C. source

Conﬁguration The way a system is set up, or the assortment of com-

ponents that make up the system. Conﬁguration can

refer to either hardware or software, or the combina-

tion of both

Contrast The ratio of luminance between the light state of the

display to the dark state of the display

Matrix Orbital VK204-25 33