An Educational Microcomputer Network Supported by a Time-Sharing Computer Facility

A microcomputer network supported by a time-sharing computer facility is described. The system is suitable for providing large numbers of students with laboratory experience. The software and hardware aspects of the system are presented.     

A Microcomputer Laboratory Work Station

This paper describes a work station designed for undergraduate microcomputer interfacing laboratories. The station includes a powerful set of hardware prototyping and software development tools. Development and downloading of software is faciltated by a communications system which links the work station to a time-sharing host computer. The communications software provides a transparent mode of operation, in which the user may directly interact with time-sharing system facilties (editors and cross-assemblers, for example), and a mode which provides packeted, error-checked downloading of work station object code. This arrangement makes optimal use of available computing resources for software development, and eliminates the need for magnetic storage devices at the work station.     

EB8002: An Educational Board Based on the Z8002 Family

This paper presents a single board microcomputer which, in conjunction with a terminal console, constitutes a powerful but inexpensive work station for the instruction of undergraduate and graduate students in computer engineering. The hardware includes 64 K bytes of RAM, 64 K bytes of EPROM (storing a monitor, an editor, an assembler, and a debugger software), six serial ports, two parallel ports with timer capabilities, and a wire-wrap area. The microcomputer can be connected to a host system that acts simply as a nonvolatile storage and printing center.     

基于DSP的故障录波测距装置的底层开发

计算机技术的快速发展使得微机保护及电力系统运行监控设备的性能也得到了快速的提升。DSP是近年来在数字处理技术上得到迅速普及的一种高效微处理器。相对于老一代微处理器而言具有速度快,功能强等特点。介绍了一种以DSP高速数据智能采集单元为核心开发的故障录波测距装置的软硬件结构和功能模块安排。重点介绍了底层软件的功能及技术实现的要点,并总结了装置开发的经验和未来改进方向。     

Integrating Hardware and Software in a Computer Engineering Laboratory

A systematic approach to the design of a multipurpose computer engineering laboratory is presented. An essential ingredient of a successful computer engineering program, and of an effective laboratory servicing that program, is that the hardware and software aspects of the curriculum be truly integrated. The laboratory described here is designed around a central resource-sharing minicomputer to which are connected minimal microcomputer stations. This configuration is proposed as the most cost-effective and the most educationally effective approach to the integration of hardware and software in a microcomputer curriculum.     

计算机辅助振动参数测试系统的研制

综合应用单片机和微机技术 ,成功研制了计算机辅助振动参数测试系统 ,并详细说明该系统的设计思想及软硬件特点。     

The telecomputing laboratory: a multipurpose laboratory

The authors' telecomputing laboratory is a multiuse state-of-the-art undergraduate teaching facility designed to be both flexible and powerful. The controlled workstation and computer communications facilities allow undergraduate students an opportunity to apply and integrate classroom knowledge in communications, signal processing, computer architecture and algorithm and software development via a set of practical experiments. Students are exposed to state-of-the-art computer communications systems, on which they can implement everything from modern digital communication and signal processing algorithms to parallel algorithms and real-time databases. State-of-the-art computer software provides the undergraduate students modern models of quality software, as well as the tools necessary to design and build sophisticated software/hardware systems. This laboratory significantly impacts many undergraduate students who will take positions with organizations in the telecommunications/computer industry, where the skills gained from laboratory experiences will be greatly valued     

微机保护装置中的干扰与抗干扰措施

人实际需要出发,定性地分析了微机保护装置受干扰的形式及造成的后果,为实现对干扰的科学分析,确保微机保护装置正常稳定、安全可靠地运行,提出了减少干扰所必须采取的措施,其中包括电源系统的抗干扰措施、正确合理的接地抑制干扰措施、采用屏蔽技术与隔离措施以及微机保护圾软件抗干扰设计中采取的多种措施等。应用结果表明,这些抗干扰措施对提高微机保护装置的稳定运行有很大的帮助。     

配电线路微机保护装置的设计

提出了一种新型的适用于配电网的微机保护,硬件设计采用“DSP＋MCU”的双CPU结构,充分发挥了DSP强大的数据处理能力和MCU的事件管理能力,可以满足配电网对保护装置的要求。软件设计将μClinux嵌入式实时操作系统引入微机保护平台。该保护装置设计合理,能够满足相关保护的技术指标要求,具有高精度和高速通信的特点,可满足配网自动化的需求。     

基于STD总线的变电站微机保护及监控系统程序设计

介绍一种以STD总线工业控制机为核心的单CPU集中式变电站微机保护及监控系统的监控程序 、保护程序和自检程序。该系统的程序采用8088汇编语言编写，多层模块结构，利用CPU内 部计时器设置周期性中断，保证继电保护功能的绝对优先；自检程序对工控机进行检查修复 和报警。     

基于单片机技术的电动机过载继电器

介绍了基于PIC单片机的过载继电器.分析了该系统的工作原理,描述了其硬件配置和软件设计方法.该继电器不仅更准确更有效地保护电动机,而且能充分发挥电动机的过载能力.同时,还能实现与上位机的通信,达到了电动机保护智能化的要求.     

单片机温度控制装置的设计与应用

本文介绍一种以单片机为智能单元的计算机温度控制装置。该系统可作为计算机控制系统教学的演示装置，亦可进行系统硬，软件设计，调试及控制算法的仿真研究。     

基于ARM技术的低压电动机保护装置

介绍一个基于ARM技术的嵌入式综合低压电动机保护装置软硬件平台的设计,采用LPC 2132作为电动机保护的控制中心.详细说明了保护原理、硬件构成以及软件算法,该装置的监控能力能够满足实时性、可靠性、精度以及通信组网的要求,最后给出了装置的仿真实验结果.     

阵列式气体传感器的信号采集系统设计

为了对室内空气质量和环境中有害气体浓度进行监测,设计一款MSP430F149单片机阵列式气体传感器信号采集系统。该系统设计一种新型的信号采集电路,采用单片机内部ADC模块对气敏传感器敏感电阻进行采样,并通过UART串口将采集到的数据发送到LabVIEW上位机,实时显示气敏元件电阻变化。给出信号采集系统的硬件设计以及MSP430F149单片机和LabVIEW上位机的软件设计方案,通过实验验证该阵列式气体传感器信号采集系统的正确性和可行性,具有较高采集精度和环境适应性,有非常广阔的应用前景。     

Interconnected power systems laboratory: a computer automatedinstructional facility for power system experiments

This paper presents a unique facility capable of exhibiting the operation of modern day power system energy management systems (EMS). The purpose is educational with possible research applications. We present the design and construction of the laboratory facility. Key elements of the facility include a real-life, flexible power system network, signal conditioning hardware, data acquisition (DAQ) equipment, and client/server industry standard computer networking technology. The designed EMS system will allow students to get experience on the realistic operation and control of power systems and expose students to modern supervisory control and data acquisition (SCADA) equipment and procedures used by the power industry     

Computer Hardware Design Projects for Undergraduate Students

A laboratory-based approach is described for making a diversified set of computer hardware design projects available to large groups of undergraduate students at a modest cost. Memory and input/output functions are provided as common resources to groups of students using either minicomputer or microcomputer systems. These computer systems also serve vital functions of providing interactive operating and testing aids to students, such as issuing prompts for actions by the students, loading internal secondary and external primary main memories, postmortem dumping of main memory, diagnosing input/output errors, and, in some cases, loading an external control memory. Students connect to this common-resource computer system via a programmable bidirectional parallel interface that was designed for the purpose of implementing communications between computing machines in a flexible and low-cost manner.     

Synthesis of a Small Microcomputer?A Project for Undergraduate Laboratories

This paper describes a project in which undergraduates construct a small microcomputer system and a supporting terminal monitor program. The project provides an introduction to the operation of microcomputer hardware, the relationship between hardware and software, and the debugging of the hardware/software system. The paper also presents a sequence of experiments which guides the student through the development process, and describes the facilities required to carry out the project. An evaluation of the project is provided.     

A simple instructional computer

A fully functional computer is described that is simple enough to be built by junior-level undergraduate computer science students with no electronics experience. Any computable algorithm can be programmed using its tree instructions, which are modelled after Turing's original machine. Building this computer gives the computer science students confidence that computer hardware is real and understandable. Layered enhancements of this basic machine can prove to its builders that it can indeed execute any computable algorithm and provides practical exam questions to motivate the study of all six levels of modern computer systems: hardware, microprogram, instruction set, operating system, assembly language, and problem-oriented language level. Equally important, this computer provides a vehicle for practicing hardware/software tradeoffs at several architectural levels. Assigning computer development to small teams of students provides essential professional experience in solving open-ended design problems, working in teams, and presenting original ideas to their peers     

The PC as a productivity tool in the microprocessor laboratory

The PC microcomputer can serve as a host system for developing microprocessor-based products. The educational potential for the PC is investigated citing the low cost and widespread availability of systems and PC-hosted products to facilitate hardware and software design. New laboratory methodologies result which prevent students from getting bogged down in learning the basic functions of an expensive and unique name-brand development system. By focusing lab activities on the PC and a powerful set of add-on tools students readily undertake the synthesis of complete projects, working from concept to product