Preh mc12t4 Guía Del Usuario

6 

subject to change without prior notice

 05.2004 

 

Preh KeyTec GmbH, www.preh-keytec.com 

 
The Preh Touch Commander serves as graphical input device which makes the 
screen of the computer react immediately on touching graphical operating characters 
(symbols, keys, printings etc.). In this way the touchscreen allows simple, interactive 
handling of a computer even for the  PC-inexperienced  user. For example this input 
media offers the possibility of reducing training time and costs for the operating staff 
via a comfortable user's dialogue. With its ergonomic design and its comfort in 
handling the Preh Touch Commander is applicable in the fields of medicine, 
commerce, gastronomy, fast-food as well in the restaurants and hotel business. 
 
The Preh Touch Commander consists of two logical units, the active matrix color 
LDC (TFT) and the highly sensitive touch sensor. These two units must be 
considered different from each other in regard to their function. This means that the 
appearance of the picture on the LCD (screen) is to be considered independent of 
the touch drivers. As far as the computer is concerned the system is connected with 
the VGA output (LCD) as well as with a serial interface (touching function).  
 
The Touch Commander can thus take over the function of  monitor and mouse. 
A standard mouse can be used along with the Touch Commander. Both a 
standard mouse and the Touch Censor will control the position of the cursor 
on the screen. 
 
The Preh Screen Commander is without a touch surface. Instead of a touch sensor, 
you will have an anti-reflective, protective glass. In this case you do not have a touch 
function on the screen. You will have a high quality TFT monitor. 
 
The active matrix Color LCD (TFT) has a diagonal of 12,1" (307 mm) with a 
resolution of 800x600 pixels as well as 262,144 colors. The display has an especially 
high degree of brightness (typ.300 cd/m²) and color brilliancy. The LCD parameters 
as for example brightness, contrast, picture position etc. are adjustable via the On 
Screen Display (OSD).  
 
The analog resistive 5 wire touch technology has a resolution of 1.024x1.024 points. 
Inputting data is done by touching it e.g. with a finger. The activation force necessary 
to register a touch is 1N. The touch surface consists of a hardened polyester foil with 
a high resistance against scratches and  an insensitivity to dirt, oil and water 
splashes. The durability of the touch sensor is 35 million single actuation per touching 
point. 
 
Multimedia models allow the possibility of giving the user audio feedback via sounds 
and tones. The volume can be adjusted by a rotary control on the rear side of the 
base. 
 
The Preh Touch / Screen Commander with modular base enables the simple 
swapping of the base cover modules in exchange for an independently-
programmable MC keyboard series (MC80WX, MC84WX, MC128WX, MC140, 
MC147, MF112C). The optional integration of a magnetic- and/or Smart Card reader 
into the cover module is provided for.