This document provides an introduction to intelligent modems, the AT command set and the concepts behind many of the commands. The AT commands are used to configure the modem to your preferred operating mode and to instruct the modem to do what you want it to do.

This article describe how to create programmes working with hardware under Windows one should use API's funntions. Here is a few indispensable functions which you need to establish communication. For example funtions to open and close connection, set the connection parameters and functions used to read or write the information from/into the port.

This article is intended to help the designers sort through the various features available in RS-232 interface products. The main features described are the regulated charge pump, Autoshutdown, RS-232 compatible versus compliant operation, ESD protection, and data rates including Megabaud operation

Description of IrDA standards, explanation of MODULATION of infra-red devices (the Pulse Code Modulation, the Frequency Shift Keying-FSK, the Bi- Phase Modulation, The Pulse Width Modulation-PWM) and TRANSFER PROTOCOLS (the RC-5 protocol, the NEC protocol, IrDA). See for more information...

Maxim Integrated Products introduces the MAX3465-MAX3469, fail-safe, 40Mbps Profibus transceivers. These devices are high-speed, differential-bus transceivers for RS-485 and RS-422 communications. They are designed to meet TIA/EIA-422-B, TIA/EIA-485-A, V.11, and X.27 standards. The transceiver complies with the Profibus specification.

Power-over-Ethernet (PoE) is an emerging new technology that enables delivery of data and power to internet appliances over existing CAT-5 Ethernet cables. PoE is rapidly gaining in popularity with manufacturers and end users of devices such as VoIP phones, wireless access points, security cameras and point-of-sale terminals. PoE is governed by the standards defined in the recently ratified IEEE802.3af standard.

The conference MODERN ELECTRONIC COMPONENTS coming soon, its begin 19th November 2003 at the Congress Centre of the Hotel Holiday Inn Brno. You can see below the main subjects of the conference and attendant programme.

This article describe how USB device indicate its speed. You can find here solutions some vendors and circuits devices with pull up resistor.

USB is standards for connecting peripherals. This article you introduce into the theme.

DCF77 is a radio station that continuously broadcasts accurate time information, which you can receive and decode in your application.