人机界面中的LCD控制驱动与接口设计

介绍LCD的控制驱动及其与MCU接口的特点;详细阐述嵌入式系统人机界面中各种常见LCD的控制驱动与MCU接口设计,以及一些基础LCD外围电路设计。     

一种帧格式数据接口仿真与检测方法

介绍一种通用的帧格式数据接口仿真与检测方法。在介绍帧格式数据信息的仿真生成和接口检测设计的基础上，对接口仿真与检测软件设计进行了介绍。以提高接口仿真与检测设计的灵活性和通用性为目的．结合实际应用，重点介绍了帧格式数据定义信息的数据结构设计和检测方法。     

基于MAX+PLUSII环境下接口电路设计与仿真

介绍了MAX＋PLUSII工作平台下使用VHDL硬件描述语言设计控制系统接口方法，对并口电路的资源进行了规划，具体给出了接口电路的设计编程与结果仿真。     

一种基于FPGA的PCI接口设计

针对传统PCI接口控制器应用局限性的问题,提出一种改进的基于FPGA的PCI总线接口的设计方案.对PCI总线接口的各功能模块进行介绍,重点介绍主/从接口状态机的结构和工作过程,用ModelSim软件对PCI接口的硬件设计进行功能仿真.仿真结果表明,该接口支持32/64位PCI设备,能够满足PCI总线的时序要求.     

基于IsIs的单片机系统仿真研究

IsIs以其强大的MCU实时仿真功能覆盖8051系列单片机、PIC以及ARM等等从低端到高端的各种嵌入式MCU系统。以IsIs为开发工具,设计了一种基于8051单片机系统的液晶游戏,并结合此实例对IsIs的用途及其在实际开发过程中的使用方法进行了介绍,并给出了IsIs与KeilC51集成开发系统的接口方法。它解决了一些实际存在的束缚,节省了大量的制作电路板的时间并减少了因设计错误导致的资金、时间的浪费,对提高产品的开发效率,降低开发成本等有重要作用。     

基于MCU实现CPU卡读写驱动接口的设计

提出了一种CPU卡低层读写驱动接口的设计方案,该方案采用MCU的通用I/O引脚直接驱动CPU卡的方式实现。首先分析了CPU卡的接口特性及传输协议,介绍了方案设计时对MCU选型的注意事项和ESAM安全模块的功能及作用;接着基于Microchip公司的PIC16LF1946芯片,完成了方案中硬件接口设计和软件接口函数设计;最后对方案中给出的设计进行实现和接口验证测试。测试结果表明,该设计方案符合ISO7816标准的要求,能高效实现CPU卡的读写。     

基于STN LCD驱动控制芯片的MPU接口电路的设计

设计一种应用于STNLCD驱动芯片中的可支持多种类型MPU的接口电路,该电路在整个芯片中用于为内部电路提供数据,为电路的正常工作提供所需时序,并在同类设计中率先支持I^2C总线协议。简单介绍了MPU接口电路的设计要求,重点描述了MPU接口电路中各个模块的设计。采用Verilog对所设计的接口电路功能进行了仿真验证,并且整个芯片用SMIC0．25μm工艺得到了实现。     

基于FPGA的实时图像融合系统中MCU接口的研究与设计

FPGA实时图像融合系统中用Verilog实现MCU接口模块,涉及到时序的匹配和数据的一致性两个重要方面.对基于ARM7TDMI内核的RISC微处理器AT91FR40162的外部总线接口(EBI)时序电路和系统参数的一致性作了研究,设计出一种能够广泛应用的基于FPGA的MCU接口方案,其中包括接口的硬件设计、系统参数读...     

一个通用的USB设备接口的设计

本文在介绍USB协议的基础上，采用自顶向下的方法设计了一个符合USB1．1规范、支持1．5MHz和12MHz传输速率的可复用和可配置的USB接口；设计在结构划分时借鉴了Intel USB 2．0 Transceiver Macrocell Interface(UTMI) Specification的接口方案，所以只需要很小的改动，就可以设计出符合USB 2．0规范的芯片。本设计应用TSMC 0．25 μm CMOS工艺进行了综合和后仿真验证，得到了优化的门级网表。     

嵌入式系统USB接口的研究及设计

本文针对嵌入式系统中USB接口进行了研究，提出了MCU＋USB的嵌入式USBHost的实现方案。用SL811HS作为USB主控芯片，用W77E58作为系统MCU，通过硬件和软件的设计，实现了嵌入式USBHost。     

本地多机通讯设计与实现

在不增加或尽量少增加硬件的前提下，提出了两种新的双机或多单片机问数据交换方法。其中纯软件方法采用四根连接线和相应的时序实现，节约了硬件资源；而采用增加串行RAM的方法，通过分时访问串行RAM，任何一个MCU对串行RAM访问过程中不需要其他MCU的参与，从而提高各MCU的实时性。并针对多机分时串行RAM访问中可能出现的竞争风险提出了有效的解决方法。     

Natural-Language Interface for CAD: A First Step

Though the ubiquity of CAD tools in state-of-the-art VLSI design has forced the issue of user interfaces for CAD to prominence, one type of user interface that has not been investigated hitherto is the naturallanquage interface. The CAD domain is substantially more complex than the domains for which previous natural-language interfaces have been built. This implies that a natural-language interface for CAD cannot be based on previous approaches to language understanding; a new approach is required. Our approach emphasizes flexibility, parallelism, and redundancy, and is embodied in an interface called Cleopatra. Ultimately, Cleopatra will be an interface for an ?integrated design environment.? As a first step towards that goal, but also as a useful tool in its own right, Cleopatra currently deals with circuit-simulation post-processing.     

脉搏波分析用多路正弦恒流源设计

介绍了一种用于脉搏波分析的多路正弦恒流源系统设计方案。该系统主要由PC机用户接口程序、单片机控制电路、DDS正弦波生成电路、滤波器、数字幅度控制电路以及电压-电流转换电路组成。PC机用户程序通过RS232接口与总控AVR单片机通信;总控AVR单片机通过TWI(Two Wire Interface)总线与下位单片机通信。该系统实现了多路正弦恒流源的生成与控制。     

基于串行接口信号调制/解调的通信方案研究

串行接口是单片机与外部设备的主要通信接口之一,串行通信在数据传输中占有重要的地位。针对单片机串行接口信号的桢格式,设计并实现了能够直接对其进行调制/解调的通信方案,详细地分析了调制电路和解调电路的原理,对确定电路参数的方法进行了说明,并通过实验验证了该方法的正确性。     

Simplicity in cognitive assistive technology: a framework and agenda for research

Technology offers substantial benefits to the many people with some form of cognitive disability. But the power of technology often comes in a package whose complexity is a barrier to many users, leading to calls for designs, and especially designs for user interfaces, that are “simple”. This paper analyzes the idea of simplicity, and suggests (a) that simplicity in a user interface is not a unified concept, but rather has distinguishable facets, and (b) that simplicity must be defined in terms of the cognitive capabilities of a user, so that what is “simpler” for one user may be “more complex” for another. Despite (b), the prospects for universal design in this area are good, in that interface technology with the flexibility needed to produce “simple” interfaces for a range of users with different cognitive strengths will be of value in addressing the overall design space of interfaces for a broad audience. While it is possible to sketch the outlines of a useful theory of simplicity, the sketch reveals much that is not fully understood. It also reveals opportunities to rethink the architecture of user interfaces in a way that will benefit user interface development generally.     

Embedded web server-based home appliance networks

Powerful microcontrollers are used as parts of most home and office appliances of today. Integrating web servers to these intelligent devices will aid in controlling them over the Internet and also in creating effective user interfaces in the form of web pages. Assigning multiple functionalities to a single button on an appliance help manufacturers economize user interfaces, but, this can easily create confusion for the users. Since the cost of web-based interfaces is considerably low, they can be used to provide the infrastructure for the design of simple and more user-friendly interfaces for household appliances. Also, a web page based interface is much easier to change, when needed, as compared to a hardware interface. This paper presents a novel approach to control devices with embedded web servers over the Internet and to form device networks such that their components can make use of one another's services and functions while improving the user interfaces. The main benefits of this approach include its lightweight design, automatic configuration, and, utilization of widely available and tested network protocols of TCP/IP and HTTP. The validity of the approach has been verified through a prototype system working with real appliances.     

Rapid Prototyping of Adaptable User Interfaces

User interface adaptation has been proposed in recent years as a means to achieve personalized accessibility and usability of user interfaces. Related user interface architectures, as well as a variety of related development method and tools, have also been elaborated. Admittedly, however, despite the recognized validity of the approach, which has been proved in practice in a series of prototype systems, the wider adoption and uptake of user interface adaptation approaches are still limited. One of the identified obstacles is the complexity intrinsic in designing such interfaces and the need of radically revising the current user interface design practice to account for (a) the alternative designs required for adaptation, (b) the parameters involved in driving adaptations (i.e., selecting among alternatives at a given point during interaction), and (c) the logic of adaptation at runtime. This article proposes a twofold tool-based support strategy for user interface adaptation development, based on (a) an adaptation development toolkit and related widget library, which directly embeds lexical level adaptations into common interactive widgets, and (b) embedding such a library in a common integrated development environment, thus allowing designers to define and view alternative adaptations at design time and create adaptable user interfaces through traditional prototyping. The aforementioned approach has been implemented in the domain of adaptable applications for older users, producing tools that are currently in use in the development of a large suite of interactive applications in various domains. The approach presented in this article is claimed to be the first and so far unique supporting rapid prototyping of adaptable user interfaces, thus minimizing the divergence between typical development practices and user interface adaptation development.     

Increasing capabilities of geometric modelling systems

Geometric modelling is the basis for design and technological planning. The integration of these tasksis the goal of the Norwegian-German APS project (Advanced Production System). In this project, the geometric model is created as a module within a solid model that handles analytic and nonanlytic geometry. The module has two interfaces: to the object-oriented operational database and to applications via a geometry-definition interface that will be enlarged to become an application interface. The geometric module can be integrated into vendor environments which normally have two-dimensional capabilities. The functional capabilities are based in COMPAC and the GPM-sculptured surface system. Both systems are merged in such a way that the data structures are integrated and one database management system is used.     

MC68HC908GP32单片机编程器的设计与实现

在分析Motorola M68HC08系列MCU的Flash存储器编程模式基础上，提出了MC68HC908HP32芯片的一种简明而实用的编程器设计方案，给出了基本设计思想，硬件设计电路，软件设计框架，并与Motorola公司提供的电路进行了对比分析。     

数据传输系统中PECL电平的接口设计

PECL电平是串行数据传输电路中经常采用的一种逻辑电平形式,本文首先介绍了PECL电平的电路实现与电气特性,给出了PECL电路之间以及PECL与别的逻辑电路在相互连接时经常采用的几种电路耦合形式,在此基础上,围绕PECL与LVPECL接口的实际例子,设计了一种交流耦合电路。实践表明,该电路设计是合理的。