Specifications 5-7

Operating Modes & Features

The following provides a summary of the main operating modes and features for VisuaLink.

VisuaLink Unit Control

VisuaLink can be controlled by one of three devices:

VisuaLink Wireless Infrared Remote Control

VoicePoint+ or Analog Phone Set (connected to TEL jack)

Personal Computer (connected to Serial Port)

A buzzer is built into VisuaLink, and will sound when an incoming call is detected. When using a VoicePoint+ or analog phone, their respective ringers will indicate an incoming call.

Call Dialing (Originating) Modes

Direct dial calling (by the Remote Control, PC control, analog telephone, and VoicePoint+)

Speed-Dial calling (by the Remote Control, PC control)

Redial calling (by the Remote Control, PC control)

VisuaLink provides 130 speed dial number address book for call originating For redial, 30 numbers are automatically saved for both incoming and outgoing calls.

VisuaLink can be set to only originate a call and can reject the originating call that does not meet the specific condition. (Originating number filter feature) Example conditions are:

Incoming call only

Inhibits originating a call to the number other than the registered abbreviated dial numbers,

Inhibits originating a call to special number (for example, the number starting from 001).

Incoming Call Answer Modes

Manual

Automatic

Selective

Selective is a security mode, and will automatically reject an incoming call from phone numbers other than those in the abbreviated dial list.)

VisuaLink 128/384 General Description

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NEC 128 Operating Modes & Features, VisuaLink Unit Control, Call Dialing Originating Modes, Incoming Call Answer Modes

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.