Communications Hardware
Article

The Ins and Outs of USB

In a world of serial and parallel, it would not be simple for a new device connection to make its mark. Follow the USB standards success story to witness how this meritorious technology carved a...
Article

Parallel port programming with C

Parallel port is a very commonly known port, widely used to connect the printer to the PC. We can program this port for device control and data transfer. In this article, we will learn basics of...
Article

Port Windows IPC apps to Linux, Part 1: Processes and threads

The wave of migration to open source in business has the potential to cause a tremendous porting traffic jam as developers move the ever-pervasive Windows application to the Linux platform. In this...
Article

NCD ActiveX Tutorial

This article is a good start point for those who want to use NCD devices. Today, more and more people need to control all kinds of devices from machine in factory to TV in home using computer....
Article

Programming the RS232 serial port via C

This article explains how to program the rs232 serial port using turbo C. Uses bioscom funtion in the tutorial. With good example program explaines PC to PC chat with direct cable connection. Connect...
Article

Boot Linux from a FireWire device

Say you want to use Linux in a dual-boot arrangemen, but you don't have any free space on your computer's hard drive. One solution would be to use a "live" Linux distribution such as Knoppix,...
Article

RTOS task switching - an example implementation

FreeRTOS is an open source mini real time scheduler (or RTOS kernel). Following a brief introduction to some multitasking concepts, this article describes how FreeRTOS operates. The AVR...
Article

Apache http server configuration and development

These are my personal notes on how to configure the Apache 2.0.16 web server on linux, and how to port an Apache 1.3.x module to it. I need these personal notes to remind me of various sequences of...
Article

Make your Classic ASP code work like in ASP.NET

Developing in Classic ASP using the same technics as in ASP.NET?. If you have to work in Classic ASP, why don't do it the right way? By using a similar framework not only your code will be more...
Article

DeviceIoControl & USB using Managed C++ & C#

Low level I/O is not part of the .NET framework, so information on how its done is difficult to find. Since I am using some specialized hardware, which won't be available to most C# developers, my...
Article

Customizing deployment with environment entries

Sometimes, when writing a J2EE Web application component, you might want to provide some flexibility to the person deploying your application. For example, perhaps you'd like to offer several...
Article

Long-Term Monitoring with SNMP

We've seen how SNMP can be used to gather just about any information from a host. You can interpret this data through a wide array of programs. The most popular are cricket and mrtg. Both are...
Article

IPFilter on OpenBSD

Have a new wireless gateway set up for your community, but don't want the local script kiddies on your network? Maybe you've just set up your new broadband connection and want to protect your LAN. Or...
Article

Improving User Passwords with apg

A few years back, I wrote about password policies and using a dictionary cracker to monitor compliance to a network's password policy. In today's article, I'll demonstrate an application from the...
Article

Using Sound on FreeBSD

In today's article, I'd like to continue configuring a multimedia workstation by concentrating on sound. First, I'll quickly demonstrate how to get sound working, then I'll move on to some of the...
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