Log In ....Tribune--On Hardware Monday, August 20, 2001, On hardware USB connectors Universal serial Bus (USB)connectors are the latest in the market with the outstanding data http://www.tribuneindia.com/2001/20010820/login/hardware.htm
Extractions: Jasjot Singh Narula W HEN a buyer moves out in the market to purchase a personal computer, his thrust is on the processor speed, higher RAM and maximum storage capacity. The buyer often lets the vendor choose the motherboard, who more often than not, gives to the client what suits his own business interest. Motherboard is a multi-layered Printed Circuit Board (PCB) that holds all key components like BIOS, CMOS, Processor, RAM, Interface controllers and ports that are plugged onto the motherboard. It acts as a direct channel for various components to interact and communicate with each other. The first motherboard came into existence with the introduction of desktop PCs by IBM in 1981 that revolutionised the computer industry. In 1982, IBM launched Extended Technology (XT) motherboards and Advanced Technology (AT) motherboards in 1984. These days the ATX (Advanced Technology Extended-style) motherboards, created by Intel in 1995, are in vogue predictably due to their performance. The following are the various components that fit on a systems motherboard: Dos while purchasing a motherboard Deal only with a reliable manufacturer.
Extractions: (323594) - With the growing popularity of the universal serial bus (USB), many hardware vendors must offer a USB interface for devices that currently support only serial or parallel interface. This article discusses the following: Important differences between... All Kb! Hot Kb! Hot Tech! New Kb! ... Unsubscribe
Extractions: Assembler Basic C for Microcontrollers Java, Forth, UML Others: Applications Embedded Operating Systems Chip Design Hardware Design ... Market Research Search: All Products Books Magazines Popular Music Classical Music Video DVD Baby Electronics Software Outdoor Living Wireless Phones Keywords: Parallel Port Serial Port USB Using the world of micro-controller-managed serial buses, this user-friendly guide offers comprehensive coverage of the theory essential to design the best possible communications bus for any application. Examines typical industrial and consumer applications and offers examples of modular solutions at various levels of complexity, in four sections on protocol, components, applications (with complete circuit diagrams), and development tools . The accompanying disk contains software for the I2C bus. Buy this book from:
COMPCON '95 Paper 2 IEEE 1394 highspeed serial bus. IEEE 1394 is a hardware and software standardfor transporting data at 100, 200, or 400 megabits per second (Mbps). http://www.skipstone.com/compcon.html
Extractions: This paper was presented by Gary Hoffman, at COMPCON '95 in San Francisco, CA on March 5 to 9, 1995. Gary Hoffman and Daniel Moore The IEEE 1394 high-speed serial bus promises to revolutionize the transport of digital data for computers and for professional and consumer electronics products. By providing an inexpensive non-proprietary high-speed method of interconnecting digital devices, IEEE 1394 is a truly universal I/O connection. Its scalable architecture and flexible peer-to-peer topology make 1394 ideal for connecting devices from computers and hard drives, to digital audio and video hardware. Isochronous, just in time delivery, allows low-cost implementations of time-critical multimedia interfaces. This paper examines this IEEE 1394 bus and provides a glimpse into its future potential. Have you looked behind your computer lately? At first it was simple - a parallel port to connect a printer, a serial port to connect a modem, and cables for a display, a keyboard, and possibly a mouse. SCSI added access to external storage devices, a large cable connector, manually set SCSI ID's, and the dreaded terminator. Multimedia added audio and MIDI connectors. Video added a cable for image capture from a video camera or recorder. Besides requiring a great deal of space for the connectors, the growing number of cables overwhelms many users. Legacy I/O interfaces monopolize portable electronics surface space though they are typically only used at a home desk. Notebook computer and Personal Digital Assistants are defined by their connector bulkhead.
Modem-HOWTO: Locating The Serial Port: IO Address, IRQs If the serial port is on a card, you may know what bus the card inserts into But unfortunately, there is some PCI serial port hardware that the driver http://tldp.org/HOWTO/Modem-HOWTO-6.html
Extractions: Next Previous Contents If you need to find a serial port it often helps if you know what bus it's on. If the serial port is on a card, you may know what bus the card inserts into (usually a PCI slot). But if the serial port is built into the motherboard it may not be clear what bus it's on. For old motherboards that have ISA bus slots, it's likely on the ISA bus and may not even be Plug-and-Play. But even if all your slots are PCI, the serial port is likely to be on either the ISA bus or LPC bus (also called a "LPC interface"). LPC is common on laptop computers. Type "lspci" to see if it shows "LPC". Unfortunately, the LPC bus has no standard Plug-and-Play method for low-level configuring devices on it. One way to deal with it is to hope that the BIOS can configure them using ACPI. Some Linux developers are aware of the problem (in late 2004) and Linux may support the LPC bus better in the future. To see if you have a LCP bus, type "lspci" and look for a LPC bridge. For a serial port to work properly it first must be given both an IO address and an IRQ. For old hardware (of mid 1990s), jumpers on a card or the a saved BIOS setting does it. For newer hardware the BIOS or Linux must set them at boot-time, and the new hardware doesn't remember how it was set once it's powered Enabling hardware it gives it both an IRQ and an IO address. Without an IO address, it can't be used. Without an IRQ it will need to use inefficient polling methods for which one must set the IRQ to in the serial driver. In olden days IRQs and IO addresses were set by jumpers or switches on a serial port card. Today these are set by digital signals sent to the hardware by the BIOS or Linux. It all should get configured automatically (provided the BIOS has not been previously set up to disable it) so that you only need to read this if you're having problems or if you want to understand how it works.
Information About The Computer BUS COMPUTER hardware Information about the computer BUS Universal serial Bus isan external bus that supports transfer rates of 12 Mbps, can support 127 http://www.computerhope.com/help/bus.htm
Extractions: Troubleshooting BUS ABCs A computer bus is a method of transmitting data from one part of the computer to another part of the computer. The computer bus will connect all devices to the computer CPU and main memory. The computer bus consists of two parts the address bus and a data bus . The data bus transfers actual data whereas the address bus transfers information about where the data should go. This page contains a basic overview of each of the computer buses as well as related links to each bus. ISA Introduced by IBM , ISA or Industry Standard Architecture was originally an 8-bit bus that was later expanded to a 16-bit bus in . When this bus was originally released it was a proprietary bus, which allowed only IBM to create peripherals and the actual interface. However in the early 1980's other manufacturers were creating the bus.
Computacion/Hardware En Monografias.com serial Bus) . Componentes del hardware. Este apunte cubre la necesidad de un curso http://www.monografias.com/Computacion/Hardware/more3.shtml
Extractions: Recursos nuevos Home Computacion : Hardware Consulte a Expertos Pregunte en los Foros Cursos sobre Computacion/Hardware Masters Recursos Páginas: Elementos más básicos de Hardware - El Disco Duro (D.D). Tarjeta de video. La tarjeta de sonido. El modem. El SIMM. El DIMM. Escaner. Tableta Digitalizadora. Lapiz Optico. Camaras digitales. Procesadores actuales. La memoria. Periféricos de almacenamiento. Medios Magneticos. Medios Opticos. Disquetes. Periféricos de entrada. Telematica. Codigos de barra. Unidades especiales de entrada/salida. Periféricos de salida. Calificar Microprocesadores: lógica y diseño - Registros. Unidad aritmético lógica. Memoria de programa. Diseño de un microprocesador. Esencialmente, un microprocesador es un circuito de alta escala de integración (LSI), compuesto de muchos circuitos mas simples como son los Fip-flops, contadores, registros, decodificadores, comparadores, etc; todos ellos en una misma pastilla de silicio, de modo que el microprocesador puede ser considerado un dispositivo lógico de propósito general o universal. Todos estos componentes que llevan a cabo físicamente la lógica y operación del microprocesador se denominan el hardware del micro. Además existe una lista de instrucciones que puede realizar o acciones que puede llevar a cabo el micro. Éstas constituyen el lenguaje del micro o software....
CorePool Hardware IPs FHG_USB2, Universal serial Bus 2.0 Function IP. FHG_USBEHC, Universal serial BusHost IP for embedded applications. FHG_USBEHC2, Universal serial Bus 2.0 http://www.corepool.com/products/hw/
Extractions: 8-Bit Microcontroller Core IEEE 1394 (Firewire) Link Layer IP DRM Base Band IP Parameterizable FFT Processor Parameterizable I C-Bus Interface Parameterizable Built In Self Test Controller for RAMs Parameterizable Built In Self Test Controller for ROMs Parameterizable Reed-Solomon Decoder Parameterizable Reed-Solomon Encoder Parameterizable Encoder and Decoder for Reliable Data Transmission Universal Serial Bus Function IP Universal Serial Bus 2.0 Function IP Universal Serial Bus Host IP for embedded applications Universal Serial Bus 2.0 Host IP for embedded applications Universal Serial Bus 2.0 On-The-Go IP for embedded applications Universal Serial Bus Simulation Environment Parameterizable Viterbi Decoder Home About CorePool Product Info Contact ... Fraunhofer IIS
IR Trans - Technical Information - Hardware serial Bus. The serial Bus to interconnect Controllers is realized using The protocol of the serial bus including clock and collision detection is coded http://www.irtrans.de/en/technicalinfo/
Extractions: IRTrans Hardware description Atmel Mega16/162 Microcontroller. This Controller is the heart of the Systems. It analyzes IR Codes and sends the stored Codes. This is done without putting any load on the CPU of the host system. Microcontrollers are specialized Processors for Control- and Real Time applications. The Controller is clocked at 8 MHz and achieves about 8 MIPS. It has got 16K Flash ROM program memory and 1 KByte of RAM. IR Receive logic. The IR receive logic consists of a TSOP 1138 IR Receiver and decoder. This Decoder receives IR Signals with a Carrier of nominal 38 kHz. It works in the range of 30 - 56 kHz with good sensitivity. In the range of 36-40 kHz, which is used by most IR Remotes, the sensitivity is very good. A range of 10m is no problem with common remote controls. Compared to the very common TSOP 1738 Receivers the TSOP 1138 is able to decode pulses which are very short. This is needed to receive and decode RECS80 signals. 455kHz HF Codes.
GNU/Hurd Hardware Compatibility Guide This documention contains a list of hardware that is known to be supported by the The Universal serial Bus (USB) and all USB devices are NOT supported. http://www.nongnu.org/thug/gnumach_hardware.html
Extractions: This guide is for a system running GNU Hurd running on top of GNU Mach. A note on naming. GNU Mach is the current microkernel in use by the GNU/Hurd operating system which uses GNU Hurd as a set of server replacements for the standard UN*X kernel. Some devices are supported in kernel space by GNU Mach, others are supported in userspace by a GNU Hurd translator. Table of Contents Node:Introduction, Next:
AV/C Compatible Asynchronous Serial Bus Connections Host Controller Interface, OHCI) and allows for hardware optimizations. Purpose.Provide efficient robust datatransfer services for serial Bus devices http://www.1394ta.org/Technology/Specifications/Descriptions/AC_10.htm
Extractions: This document describes asynchronous connections, an asynchronous data-transfer service that efficiently transfers data between simple Serial Bus compliant devices. Standardization of asynchronous connections is expected to simplify device hardware and software, by providing a common transport for transferring (potentially) different forms of application-specific data. The scope and purpose of this activity are summarized below: Scope. Asynchronous connections provide a lightweight mechanism for robustly transferring large amounts of data between Serial Bus nodes. Bidirectional flow control limits the data transfer rate to the slower of the rates supported by the producer or consumer. The architecture is compatible with software managed interfaces (such as Open Host Controller Interface, OHCI) and allows for hardware optimizations. Purpose. Provide efficient robust data-transfer services for Serial Bus devices including AV devices that are controlled by AV/C commands. The same protocols can be used for many devices, although the content of the transferred data is expected to be application dependent.
Extractions: 25 September 2005 By Nathan John A popular method of implementing a board identification (ID) system in telecom equipment uses a serial bus that is dedicated for communicating identification information. The I C serial-bus architecture is applicable to a wide range of telecommunications products. C) protocol for serial communications allows this bus to be more flexible in implementing a board ID system. Virtually all medium to large capacity telecommunication systems are designed in modules. Each module is comprised of one or more circuit boards. Maintenance on this type of system is made very simple: remove the defective card and replace it. An additional benefit of this strategy is the ability to use these circuit-card building blocks on more than one system, which reduces design time and speeds time-to-market. The need for board identification Building a system based on circuit card modules requires a central master controller to determine available resources installed in that particular unit. Typically, the system master creates a table that contains information about these resources. There are two ways that this table can be created. Either this information is preprogrammed into the master at the time the system is configured, or the master can be given the ability to determine system resources during the power-on sequence. The latter method is preferred due to the greater flexibility it provides. It allows for swapping of boards for maintenance purposes at the customer site and can even serve as the basis for upgrading and reconfiguring a system in the field.
Hardware Troubleshooting Techniques If the system has not detected the presence of the port hardware at this stage, Your particular USB device might be listed under Universal serial Bus http://www.examcram2.com/articles/article.asp?p=347825&seqNum=13
CIOL : Tech Bytes : FireWire - Serial Bus Burns Rubber hardware, software, and peripheral manufacturers alike are FireWire is a newserial bus standard. A more popular one currently in use is the RS232 http://www.ciol.com/content/search/showarticle.asp?artid=12208
Hardware Overview And Apple s hardware is integrated with the operating system, resulting in For example, Apple takes responsibility for Universal serial Bus (USB) http://developer.apple.com/hardware/overview.html
Extractions: Advanced Search Log In Not a Member? Contact ADC ... Hardware Apple delivers industry-leading hardware based on open standards, state-of-the-art microprocessor technology and support for standard peripheral families. From the best-selling iPod digital music player, the AirPort wireless product family, the iMac and PowerMac desktop computers, and the stunning 30" Cinema Display, to the cutting-edge 17" PowerBook notebook computer, and the Xserve and Xserve RAID server products, Apple delivers powerful hardware solutions for home, school, and business. Apple continues to open new areas for developers, allowing you to write software that runs on these machines, as well as create hardware products that connect to and interact with these devices. In addition, Apple provides powerful tools such as Shark, an optimization tool that helps developers take full advantage of the power of the G5 processor. Apple's support of open standards makes it easier to create products that "just work." For example, AirPort wireless products are based on the 802.11b and 802.11g standards, which means that any 802.11 router may be used on an AirPort network. And Apple's hardware is integrated with the operating system, resulting in seamless operation for many hardware devices. For example, Apple takes responsibility for Universal Serial Bus (USB) integration, from the connection and wiring inside the box, to the drivers deep in the operating system, to the user interface that a customer interacts with to enable a new USB printer, and even to the way applications on the platform interact with the printer. No other vendor takes this end-to-end responsibility, and it makes the Macintosh a highly reliable and easy-to-work-with platform for hardware vendors.
Accessing Hardware From Applications: I/O Kit Family Device-Access Support Direct access to PC Card bus hardware by applications or other code running serial family. Applications can access devices in this family through the http://developer.apple.com/documentation/DeviceDrivers/Conceptual/AccessingHardw
Extractions: Advanced Search Log In Not a Member? Contact ADC ... Accessing Hardware From Applications This appendix lists the current I/O Kit device families, identifies which families support device interfaces and which can be accessed through device files and POSIX functions, and points to documentation for working with specific devices. For more information on I/O Kit families, see I/O Kit Fundamentals . For reference documentation of I/O Kit family support of user-space device access, see the Device Drivers Reference Library Documentation for working with additional device families will be provided as it becomes available. ADB family. This family provides an interface (defined in IOADBLib.h ) for reading and writing registers on ADB devices. The interface permits only polled mode operations. Interrupt operations are only supported for kernel-resident clients. ATA and ATAPI family. This family does not supply any device interfaces. Access to ATA/ATAPI devices is provided by clients of this family, most commonly the Storage family. The SCSI Architecture Model family provides device interfaces for ATAPI devices that comply with the SCSI Architecture Model SCSI Primary Commands specification. See
Embedded Star Weblog - Week Of July 7, 2003 The hardware simulation then executes the required bus transaction at the desired IEEE1394 is a high performance serial Bus standard. The serial bus http://www.embeddedstar.com/weblog/20030707.html
Extractions: SMX target evaluation kits are offered to developers who are in the process of selecting an RTOS for a project which has been approved or is expected to be approved soon. You will find the kits interesting to work with and satisfactory for learning smx, smx++, and PEG. The SMX Evaluation Kits can be compiled, downloaded, and run on the specified target immediately. Technical Paper: microPlatform - System on a Chip With advances in semiconductor technology driving die sizes and costs down, the technology for building highly integrated "systems on a chip" has emerged. Single chip ASIC solutions provide all the functionality of the current single board computer for a wide variety of applications in the embedded marketplace. As such, new tools and design methodologies are required for developing these products in order to take advantage of these advances in hardware. Technical Paper: What is Preboot eXecution Environment (PXE)?
IEEE 1275 Open Firmware Home Page Open Firmware Recommended Practice Universal serial Bus Binding to IEEE PowerPC Microprocessor Common hardware Reference Platform (CHRP) Binding http://playground.sun.com/1275/home.html
Extractions: Open Firmware is processor and system independent boot firmware. This is the home page for the Open Firmware Working Group. You can read more about Open Firmware, the working group, and several documents related to Open Firmware. The information provided here is published by the Open Firmware Working Group, and is provided as a free service. The Working Group, any individual member, and/or any company sponsoring the membership of any individual member are not responsible for any inaccurate or incorrect information provided in these documents. The Open Firmware Working Group acknowledges SunSoft's Internet Engineering Group for hosting our home page. The Open Firmware Working Group acknowledges Apple Computer Inc and Paul M. Resch for hosting our mirror site. The web counter for this page says you are visitor number since March 15, 1996. Welcome.
