NCR 7455, Hardware User'S Manual

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1-8 Chapter 1: Product Overview
Hardware Module Descriptions
Processor Board
Processor/Chip Set
The terminal uses a Celeron processor (
µ
PGA2 package), used with the
Intel 440BX PC chipset. The 440BX chipset consists of the 82443BX
System Controller and the 82371EB PCI ISA Accelerator, also called the
PIIX4E. This chipset includes 100 MHz system bus and memory
support, 64 bit bus width, and AGP video interface.
Video Subsystem
The video subsystem supports the following LCD types:
•
12.1" passive matrix (DSTN) 800x600 with 32 K effective colors
•
12.1" active matrix (TFT) 800x600 with 64 K colors
Support for the LCD integrated display is provided internally. External
support for SVGA monitors (800x600 [or better] resolution and 64 K [or
better] colors) is provided by a CRT 15-pin D-shell connector.
The LCD brightness is software controlled. Neither terminal has
hardware controls for brightness or contrast.
The LCD back lighting is also software controlled. In addition to OFF
and ON modes, a dimmed mode is supported in the hardware to allow
increased tube life and less power consumption. If appropriate
software drivers are loaded, full brightness is restored when a key is
pressed or the screen touched (on touch screen models), motion
detection (Motion Sensor section), or an application request (i.e., to play
promotional material on a preset schedule).