1-2 Introduction

Features

VisuaLink incorporates features for today’s high performance technologies while making a videoconference system easy and cost effective to operate.

Total Integration

• single compact unit

VisuaLink is a self-contained unit. It integrates hardware and software into one small easy to use box. VisuaLink is easy to setup and likewise easy to troubleshoot any connection problems.

• weighs less than 5 lbs.(3 Kg)

Portability

VisuaLink 128 and VisuaLink 384 are compact units, weighing less than five pounds (3 Kg). Small enough to fit inside an attache or computer case, they have the durability to withstand the rigors of regular travel. This makes them ideal companions for demos, business trips, and off-site meetings.

use with most vendor peripherals

buttons for calling and hang-up are color coded for quick access

configuration startup menus for both network and VisuaLink configurations

Plug & Play Technology

VisuaLink systems use Plug & Play technology employing simple generic interfaces. This makes for easy connections to almost any brand of cameras, microphones, and other audio/video components. There is no need for any special equipment with VisuaLink, only a standard ISDN BRI line connection.

The VisuaLink systems use industry standard connections for NTSC composite video inputs/outputs (RCA pin), S-Video inputs/outputs (DIN4), and modular jacks (RJ-45) for BRI interfaces. Color-coded connectors for the video and audio with a clearly labeled unit back panel. It takes only seconds to connect all peripheral devices to VisuaLink.

Wireless Remote

The VisuaLink hand-held remote control (infrared) provides access to all functions with a simple button touch. The remote can control all VisuaLink connections/disconnections, conference operations, and environment settings.

On-Screen Displays

The on-screen messages and icon driven menus make it easy for anyone to operate VisuaLink. Just point the VisuaLink remote and follow the messages and menus on the video display. No special video training is needed.

VisuaLink 128/384 General Description

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NEC 128 manual Features

128 specifications

The NEC 128 is a remarkable microprocessor that represents a significant leap in technological innovation during its time. Introduced in the early 1980s, this processor was designed to meet the demands of increasingly sophisticated computing tasks, primarily aimed at the burgeoning field of personal computing and embedded systems.

One of the standout features of the NEC 128 is its 16-bit architecture, which was quite advanced for its era. This architecture allows for a greater data throughput, enabling the handling of larger data sets and providing improved performance over its predecessors. The NEC 128 operates on a clock speed that typically ranges from 4 to 8 MHz, making it capable of executing instructions efficiently and swiftly, which was crucial for running more complex applications.

The processor is built using CMOS technology, which offers significant advantages in terms of power consumption compared to earlier bipolar technology. This characteristic made the NEC 128 not only suitable for desktop computing but also an appealing choice for battery-operated devices, enhancing its versatility. The use of CMOS allowed for a reduced heat output, contributing to the reliability and longevity of devices powered by this microprocessor.

Another noteworthy aspect of the NEC 128 is its support for a variety of addressing modes. This flexibility enables programmers to write more efficient and compact code, optimizing the use of memory resources. By supporting both immediate and indirect addressing, the NEC 128 allows for more dynamic programming, which is essential for developing applications that require real-time processing.

The processor's architecture also includes a robust instruction set that facilitates arithmetic operations, logical operations, and control flow management. This comprehensive instruction set is instrumental for developers, as it provides the necessary tools for creating a wide range of applications, from simple utilities to more complex software systems.

In summary, the NEC 128 microprocessor is characterized by its 16-bit architecture, efficient CMOS technology, and a versatile instruction set, making it a compelling choice for its era. Its combination of performance, power efficiency, and flexibility positioned it as a formidable player in the personal computing market and laid the groundwork for future advancements in microprocessor technology. With its various applications and features, the NEC 128 remains a noteworthy chapter in the history of computing.