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    Big Brother Traffic Light

    Network Operations Centers and Help Desks all over monitor their systems and networks with an open source product called Big Brother – the freely available version is now Hobbit. Here’s how to add a traffic light to indicate network status.

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    picSimon - Handheld Microcontroller Game

    In my recent twiddlings with Microcontrollers a project has emerged. picSimon! A reimplementation of the classic toy using a single chip, a few discrete components, a few switches, and 4 LEDs. So far it is quite a hit at home and the office. Shawn (my 6 year-old son) has gotten up to about 6 moves, I have gotten 18 (once) and at the office 12-15 seems to be the range.

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    Kids MAME 1

    This project was a nice little Christmas present for my kids, and a prototype for Me. Using MAME, the Multiple Arcade Machine Emulator, I built a “universal” arcade machine. The style of the case is a 3/4 scale version of Defender, one of my favorite arcade games.

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    W1REX QRP Transmitter

    This is a 40/80M Amateur Band CW (continuous wave) transmitter built from parts and board provided by Rex Harper (W1REX). It was a preparation for a QRPme club project.

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    Guidelines for Programming Style (Java version)

    Many programs are modified during their useful life, either to correct errors or to extend their capabilities. It has been estimated that as much as 80% of the cost of software development is incurred by such modifications during the so-called “maintenance period” of the software lifecycle. In most cases, the programmers making the modifications are not the authors of the program, and their task is eased if the code has been written to be understood. We here discuss a few techniques which help to make the source code of a program more intelligible. Part of your grade on the programming assignments for this course will be determined by how thoughtfully you incorporate these ideas in your solutions to the problems.

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    TVRO Installation

    Well after some playing around in my "side yard" my Big Ugly Dish (BUD) is up and receiving. This page is the story of how it all happened. Perhaps it will contain some helpful hints for other newcomers to the BUD world. Maybe not, but here it is anyway.

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    On the Relationship of Server Disk Workloads and Client File Requests (CMG 96)

    In this study, we consider the relationship of client IO requests submitted to a file server and the server’s disk subsystem IO traffic. We collected traces of client-server IOs and, during each trace period, we also traced server storage subsystem workloads. We analyze and compare trace pairs collected in each trace period. We evaluate file server performance and investigate the relationship between client file requests and server disk workloads.

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