Interface Module

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Interface Module

DE! 456a GM Door Lock Keyless Entry Digital Data Interface Module DE! 456a GM Door Lock Keyless Entry Digital Data Interface Module Paypal 0 Bid US $.99 1h 11m
DE! 456L 456LW UNIVERSAL GM DODGE CHRYSLER + KEYLESS MODULE INTERFACE DE! 456L 456LW UNIVERSAL GM DODGE CHRYSLER + KEYLESS MODULE INTERFACE Paypal 0 Bid US $.99 1h 11m
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Bogen telephone interface input module- Loop start or g Bogen telephone interface input module- Loop start or g Paypal US $79.86 7h 5m
Ez-bus interface module, 97+ newer GM and JEEP GRAND CHEROKEE vehicles Ez-bus interface module, 97+ newer GM and JEEP GRAND CHEROKEE vehicles Paypal 0 Bid US $6.99 13h 44m
LOT OF 8  TRIPP LITE B078-101-USB - USB SERVER INTERFACE MODULE LOT OF 8 TRIPP LITE B078-101-USB - USB SERVER INTERFACE MODULE Paypal 1 Bid US $39.00 14h 1m
DIRECTED ELECTRONICS 556U Universal Remote Start Interface Module DEI DIRECTED ELECTRONICS 556U Universal Remote Start Interface Module DEI Paypal US $15.99 14h 1m
Ham Radio: Cushman CE-4,4b,6&6b GPSDO interface module Ham Radio: Cushman CE-4,4b,6&6b GPSDO interface module Paypal 0 Bid US $75.00 14h 35m
Dual-axis Magnetic Sensor Module With I 2 c Interface Dual-axis Magnetic Sensor Module With I 2 c Interface Paypal 0 Bid US $11.99 17h 7m
Allen Bradley 1761-NET-ENI Ser D MicroLogix Ethernet Interface Module Allen Bradley 1761-NET-ENI Ser D MicroLogix Ethernet Interface Module Paypal 6 Bids US $76.00 21h 52m
Allen Bradley 1492-1FM20F-F-2 Fuseable Interface Module 20 PT Digital NEW !! Allen Bradley 1492-1FM20F-F-2 Fuseable Interface Module 20 PT Digital NEW !! Paypal US $24.95 1d 2h 10m
GE superbus 2000 phone interface/voice module-NO RESERVE!!!! GE superbus 2000 phone interface/voice module-NO RESERVE!!!! Paypal 0 Bid US $10.00 1d 3h 43m
LARSCOM NETWORK INTERFACE MOD SPLIT T with module NIM-201 # LARSCOM NETWORK INTERFACE MOD SPLIT T with module NIM-201 # Paypal 0 Bid US $9.99 1d 5h 47m
BOSCH D8125INV Innovonics Wireless Interface Module BOSCH D8125INV Innovonics Wireless Interface Module Paypal 0 Bid US $15.00 1d 11h 45m
Belkin OmniView SMB Server Interface Module USB  **FREE SHIPPING** Belkin OmniView SMB Server Interface Module USB **FREE SHIPPING** Paypal US $59.99 1d 13h 56m
Belkin OmniView SMB Server Interface Module USB  **FREE SHIPPING** Belkin OmniView SMB Server Interface Module USB **FREE SHIPPING** Paypal US $59.99 1d 13h 56m
Belkin OmniView SMB Server Interface Module USB  **FREE SHIPPING** Belkin OmniView SMB Server Interface Module USB **FREE SHIPPING** Paypal US $59.99 1d 13h 56m
NEW IN PACKAGE - P.I.E. UNi-POD Universal iPod Interface Module (B804)mb NEW IN PACKAGE - P.I.E. UNi-POD Universal iPod Interface Module (B804)mb Paypal US $45.45 1d 15h 52m
NEW IN PACKAGE - Axxess SWC-01 Digital Interface module and cables (B802) mb NEW IN PACKAGE - Axxess SWC-01 Digital Interface module and cables (B802) mb Paypal US $59.59 1d 15h 58m
NEW Directed Ford PATS Remote Start Interface module only P/N 555P (B864) mb NEW Directed Ford PATS Remote Start Interface module only P/N 555P (B864) mb Paypal US $33.33 1d 15h 58m
Dual-axis Magnetic Sensor Module With I 2 c Interface Dual-axis Magnetic Sensor Module With I 2 c Interface Paypal 0 Bid US $11.99 1d 16h 44m
10 Raritan DCIM-PS2 CIM KVM Computer Interface Modules New 10 Raritan DCIM-PS2 CIM KVM Computer Interface Modules New Paypal US $110.99 1d 17h 9m
HAI 36A00-1 UPB powerline interface module HAI 36A00-1 UPB powerline interface module Paypal 0 Bid US $25.00 1d 18h 27m
Motorola BDN6708B Interface module for EMS Motorola BDN6708B Interface module for EMS Paypal US $150.00 1d 20h 2m
MERCEDES BENZ Bluetooth INTERFACE MODULE Adapter Puck cell phone MERCEDES BENZ Bluetooth INTERFACE MODULE Adapter Puck cell phone Paypal 7 Bids US $130.00 1d 23h 19m
Lowrance RIM 100 sp Radar Interface Module for Serial Port Applications Lowrance RIM 100 sp Radar Interface Module for Serial Port Applications Paypal 0 Bid US $.99 2d 32m
DE! 456L 456LW UNIVERSAL GM DODGE CHRYSLER + KEYLESS MODULE INTERFACE DE! 456L 456LW UNIVERSAL GM DODGE CHRYSLER + KEYLESS MODULE INTERFACE Paypal 0 Bid US $.99 2d 33m
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INTERFACE MODULE Stardust RS232 (REMVIEW I/0) INTERFACE MODULE Stardust RS232 (REMVIEW I/0) Paypal US $2.99 2d 48m
*NEW IN BOX, FACTORY SEALED* 1769-ASCII Allen-Bradley ASCII Interface Module *NEW IN BOX, FACTORY SEALED* 1769-ASCII Allen-Bradley ASCII Interface Module Paypal 0 Bid US $400.00 2d 2h 19m
ADXL330 3-axis accelerometer module (Arduino-friendly interface) * USA seller * ADXL330 3-axis accelerometer module (Arduino-friendly interface) * USA seller * Paypal US $21.99 2d 2h 46m
JET Dynamic Spectrum Tuner GM DURAMAX Diesel Interface Module with 6 Licenses JET Dynamic Spectrum Tuner GM DURAMAX Diesel Interface Module with 6 Licenses Paypal 1 Bid US $150.00 2d 2h 47m
DIRECTED Electronics 556uw Universal Remote Start Interface Module NEW! DIRECTED Electronics 556uw Universal Remote Start Interface Module NEW! Paypal US $14.95 2d 3h 4m
Directed Electronics 457cw Chrysler/Jeep Door Lock Interface Module FREE SHIP! Directed Electronics 457cw Chrysler/Jeep Door Lock Interface Module FREE SHIP! Paypal US $13.95 2d 3h 5m
POLYCOM  SOUNDSTATION 500D/550D PREMIER INTERFACE MODULE 2201-06415-003 B POLYCOM SOUNDSTATION 500D/550D PREMIER INTERFACE MODULE 2201-06415-003 B Paypal US $19.99 2d 3h 21m
POLYCOM SOUNDSTATION 500D/550D PREMIER INTERFACE MODULE 2201-06415-003 B POLYCOM SOUNDSTATION 500D/550D PREMIER INTERFACE MODULE 2201-06415-003 B Paypal US $19.99 2d 3h 21m
Lot of 2, Allen Bradley, SLC 500, 1746, Cables for 1492 Interface Modules Lot of 2, Allen Bradley, SLC 500, 1746, Cables for 1492 Interface Modules Paypal 0 Bid US $29.95 2d 3h 23m
NEW Dual-axis Magnetic Sensor Module Interface improved NEW Dual-axis Magnetic Sensor Module Interface improved Paypal US $14.99 2d 4h 20m
SUNPAK auto 422D thyristor Electronic Flash w/interface module for Canon &manual SUNPAK auto 422D thyristor Electronic Flash w/interface module for Canon &manual Paypal 0 Bid US $29.95 2d 4h 20m
Sti SB-INT-01 AS-Interface Safety at Work module Sti SB-INT-01 AS-Interface Safety at Work module Paypal 0 Bid US $49.00 2d 4h 42m
RTI IRF-6 System Interface Module RTI IRF-6 System Interface Module Paypal 0 Bid US $9.99 2d 5h 11m
RTI IRF-6 System Interface Module - Brand New In Box w/ Power Supply & Antenna RTI IRF-6 System Interface Module - Brand New In Box w/ Power Supply & Antenna Paypal 0 Bid US $79.99 2d 5h 32m
Bogen telephone interface input module- Loop start or g Bogen telephone interface input module- Loop start or g Paypal US $79.86 2d 6h 49m
Lot of 20: Pulse E2009 Interface Modules Lot of 20: Pulse E2009 Interface Modules Paypal 0 Bid US $10.00 2d 7h 41m
Dual-axis Magnetic Sensor Module With I 2 c Interface Dual-axis Magnetic Sensor Module With I 2 c Interface Paypal 0 Bid US $7.99 2d 10h 22m
Lot of 7 ADEMCO HONEYWELL ALARM 4193SN SERIALIZED INTERFACE MODULE (SIM) Lot of 7 ADEMCO HONEYWELL ALARM 4193SN SERIALIZED INTERFACE MODULE (SIM) Paypal US $54.00 2d 13h 20m
Polycom QBRI ISDN BRI Interface Module for ViewStation NEW in Box With CABLES Polycom QBRI ISDN BRI Interface Module for ViewStation NEW in Box With CABLES Paypal 0 Bid US $39.97 2d 15h 32m
BAILEY CONTROLS IMMPI01 INFI90 MULTI-FUNCTION PROCESSOR INTERFACE MODULE BOARD BAILEY CONTROLS IMMPI01 INFI90 MULTI-FUNCTION PROCESSOR INTERFACE MODULE BOARD Paypal 1 Bid US $99.99 2d 15h 54m
GENERIC AUTOMATION 533-101-186 D/O PC BOARD RELAY INTERFACE CARD MODULE 27028 GENERIC AUTOMATION 533-101-186 D/O PC BOARD RELAY INTERFACE CARD MODULE 27028 Paypal 0 Bid US $9.00 2d 16h 42m
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[ Module 1: Mood ] Mood Disorders at the Interface of Clinical Practice and Emerging Genetics [ A Video Symposium - Includes Course Guide Booklet ] [ Module 1: Mood ] Mood Disorders at the Interface of Clinical Practice and Emerging Genetics [ A Video Symposium - Includes Course Guide Booklet ]
Sale Price: $42.50
Intel PRO/Wireless 2200BG 802.11b/g Wireless Network Adapter Intel PRO/Wireless 2200BG 802.11b/g Wireless Network Adapter
List Price: $30.00
Sale Price: $12.00

INTEL (WM3B2200BGMWXF) An embedded 802.11 b/g Mini PCI Type 3B adapter operating in the 2.4 GHz spectru

PartyLite Tealight Candles : Mango Tangerine 1 Dozen (12 scented candle) PartyLite Tealight Candles : Mango Tangerine 1 Dozen (12 scented candle)
List Price: $126.99
Sale Price: $14.99

6 ft Black PC99 3-in-1 Console Extension Cable. The StarTech PC99 3-in-1 Extension Cable allows keyboard, monitor, and mouse cables to be extended without the mess and tangle of 3 separate traditional cables. Our exclusive design takes 3 separate extension cables and fuses them into 1 neat tangle-free six-foot black cable. Each connector end is color coded according to PC99 specifications for ease of identification when connecting the peripherals. The video component of the cable is constructed with high-quality mini-coaxial wire for crystal clear video quality at any resolution. Double shielding and a ferrite core on the video cable virtually eliminate any external signal interference. If a speaker extension is also required, check out the StarTech 4-in-1 extension cables.

Legend 8-Port Basic Rate Interface (BRI) Module Legend 8-Port Basic Rate Interface (BRI) Module

Legend 8-Port Basic Rate Interface (BRI) Module

Chessmaster 10th Edition Chessmaster 10th Edition
List Price: $19.99
Sale Price: $7.95

Ruff & daisy artists name: amanda jones image size: 12.25 high x 12 wide. Paper size: 12.25 high x 12 wide. Unframed poster print....

Replacement Joystick [Nintendo] Replacement Joystick [Nintendo]
Sale Price: $3.38

Fix your broken joystick with this replacement. Must Have!

Sabrent Micro Wireless USB Bluetooth Adapter (BT-USBT) Sabrent Micro Wireless USB Bluetooth Adapter (BT-USBT)
List Price: $9.99
Sale Price: $9.87

Add Bluetooth wireless technology to your PC or notebook! This transparent blue device features a USB interface. With an operating range of up to 100m, you can easily transfer data to other Bluetooth devices! It supports Bluetooth voice data, offers multi-language support and plugs into any device with a USB port! Features : Provides encrypted link security. Allows user the ability to create a Bluetooth Personal Area Network with other compatible Bluetooth devices. Share/Edit/Print documents via Bluetooth. Access internet via Bluetooth Mobile phone with GPRS/ CDMA or Bluetooth enabled PC with internet connection. Wireless connection via a serial cable/mouse/keyboard. Work with microphone/speakers on PC. Work with a Bluetooth headset via audio in/out on a PC or mobile phone. Wireless communication module corresponding to Bluetooth Specification Ver 1.1 Support up to 7 ACL connections and 3 SCO connections High sensitivity supports communications of up to100m (Open Site) Supports Bluetooth Class 1 (up to 100 meters) Built-in Link controller and Link Manager Protocol HCI interface over USB, compliant with USB Specification Ver 1.1 Built-in flash memory, system clock Internet access sharing USB interface fits with both desktops and notebooks File and information sharing make collaboration effortless Printer sharing Share MP3 audio files with all connected Purchase on the network Specifications : Uses 2.4 GHz ISM frequency band. V2.0 for Transfer speeds of 3MBbps High-speed Wireless Transmissions, up to 721 Kbps Data Throughput. Enable wireless connectivity between a notebook computer and a cellular phone. Connections within ranges up to 330 feet (100 meters). Plug and play installation in Windows 98SE / 2000 / ME / XP / Vista / 7 Requirements : Available USB port Windows 98SE / ME / 2000 / XP / Vista Mac OS X v 10.1.2 and Higher Linux OS Package Includes : One USB Bluetooth adapter Driver on CD

Lynx Touch Starter Kit Lynx Touch Starter Kit
List Price: $399.99
Sale Price: $246.90

Contents: 1 Honeywell Lynx Touch Wireless Control Panel 1 Interior Siren 1 Battery Backup 3 Wireless Door / Window Contacts 1 Wireless Motion Detector 1 - 4 Button Wireless Keychain Remote Control 1 - Installation Manual & 1 - User Manual 1 - User DVD Video System Features: 4.7 inch color graphic touchscreen - Resolution 470 x 256 pixels - 16.7 million colors - Intuitive easy-to-use touchscreen interface - Easy to understand icons - Menu driven navigation - Quick accurate programming - Four dedicated keys for everyday functions Works with Total Connect 2.0 - Event notification is easy to set and is changeable by the user Voice announcement of system and zone status Family message center (for user recorded messages) Energy savings-with the optional Z-Wave® Bridge, LYNX Touch can set back Z-Wave thermostats based upon arming away or disarming Voice chime by zone Automatic stay arming Remote phone control Speaker phone operation 16 programmable reminders "Follow me" reminder and system announcements; users can be notified by phone of reminders and system events. Supports two end-user phone numbers. 16 user codes (Installer, Master, Babysitter, Duress, 14 Secondary) Three panic functions Wall or desk mount Viewable event log stores up to 128 events Case tamper Exit error feature (detects difference between an actual alarm and exit alarm caused by leaving a door open after the exit delay expires) RF jam detection Quick Exit feature enables users to leave the premises for a brief time without disarming system Hinged cover for easy installation Real-time clock display Zones and Devices One hardwired zone Up to 64 total wireless zones (5800 Series Transmitters) Supports wireless bidirectional keypads GSMVLP5 GSM radio option ILP5 Internet module option Internal RJ31X option Programmable trigger output

Smoke Alarm Relay Module - Activates Auxuliary Warning Devices - For Use with Kidde Smoke Alarms - Kidde SM120X Smoke Alarm Relay Module - Activates Auxuliary Warning Devices - For Use with Kidde Smoke Alarms - Kidde SM120X
Sale Price: $8.49

RELAY MODULE FOR I-COMBO UNITS(SMOKE ALARM)

THM6000R1002 Honeywell Internet Interface Module THM6000R1002 Honeywell Internet Interface Module
Sale Price: $84.09

The RedLINKTM Internet Gateway provides remote access to any RedLINKTM enabled thermostat through the internet, smart phone or tablet.

Plugable USB 2.0 to 10/100/1000 Gigabit Ethernet LAN Network Adapter (ASIX AX88178 Chipset) Plugable USB 2.0 to 10/100/1000 Gigabit Ethernet LAN Network Adapter (ASIX AX88178 Chipset)
List Price: $39.99
Sale Price: $26.95

Add a network interface to your computer via USB. Common uses are for improved speeds vs. 10/100 adapters and wireless networks, for replacing a broken internal network card, for adding a separately routable network interface, and for peer-peer file transfer over Ethernet. It is not a solution for connecting a USB device to a network. PerformancePlug into any USB 2.0 laptop or desktop currently limited to 10/100 ethernet, and benefit from faster transfers on your Gigabit Ethernet Network. USB 2.0 supports theoretical speeds up to 480Mbs. In practice, most machines will see up to a doubling of network speed by moving from 100Mbs Fast Ethernet to 1000Mbs Gigabit ethernet via USB. Also works on 10/100 ethernet networks at their native speeds. Drivers Microsoft signed 32/64-bit drivers for Windows 7, Vista, XP, 2000, ME, and Win98SE. Mac OS X 64-bit kernel and 10.6 and later must download the latest driver. Driver for Linux kernels 2.6.9+ (advanced users only: must download source from ASIX and build as a kernel module). Not compatible with Tivo Series 2, Wii, or most other non-PC devices. Included in PackageUSB 2.0 to Gigabit Ethernet Adapter with standard USB type A connector to PC and female RJ45 jack to network, Quick Install Guide, and Driver Disk for Windows, earlier Mac versions, and Linux.

Gigabyte Intel Z68 ATX DDR3 2133 LGA 1155 Motherboard GA-Z68A-D3H-B3 Gigabyte Intel Z68 ATX DDR3 2133 LGA 1155 Motherboard GA-Z68A-D3H-B3
List Price: $142.95
Sale Price: $112.99

Combining the advantages of the Intel® P67 and H67 platforms in one complete package, the GIGABYTE Z68A-D3H-B3 Intel Z68 Motherboard offers the best of both worlds; users can take advantage of the system tuning and overclocking features found in the Intel® P67 platform as well as the built-in visual features of the H67 platforms when combined with 2nd generation Intel® Core™ processors. The GIGABYTE Z68A-D3H-B3 Intel Z68 Motherboard is equipped with the much anticipated Intel® Smart Response Technology, allowing users to experience system performance similar to SSD only systems.

Gigabyte Intel Z68 ATX DDR3 2133 LGA 1155 Motherboards GA-Z68X-UD3H-B3 Gigabyte Intel Z68 ATX DDR3 2133 LGA 1155 Motherboards GA-Z68X-UD3H-B3
List Price: $189.09
Sale Price: $141.99

Combining the advantages of the Intel® P67 and H67 platforms in one complete package, the GIGABYTE GA-Z68X-UD3H-B3 Intel Z68 Motherboard offers the best of both worlds; users can take advantage of the system tuning and overclocking features found in the Intel® P67 platform as well as the built-in visual features of the H67 platforms when combined with 2nd generation Intel® Core™ processors. The GIGABYTE GA-Z68X-UD3H-B3 Intel Z68 Motherboard incorporates an Intel® approved Intersil PWM controller that is VRD 12 (Voltage Regulator Down) compliant.

FPGA Prototyping By Verilog Examples: Xilinx Spartan-3 Version FPGA Prototyping By Verilog Examples: Xilinx Spartan-3 Version
List Price: $99.95
Sale Price: $69.70

FPGA Prototyping Using Verilog Examples will provide you with a hands-on introduction to Verilog synthesis and FPGA programming through a “learn by doing” approach. By following the clear, easy-to-understand templates for code development and the numerous practical examples, you can quickly develop and simulate a sophisticated digital circuit, realize it on a prototyping device, and verify the operation of its physical implementation. This introductory text that will provide you with a solid foundation, instill confidence with rigorous examples for complex systems and prepare you for future development tasks.

Perl Best Practices Perl Best Practices
List Price: $31.99

Many programmers code by instinct, relying on convenient habits or a "style" they picked up early on. They aren't conscious of all the choices they make, like how they format their source, the names they use for variables, or the kinds of loops they use. They're focused entirely on problems they're solving, solutions they're creating, and algorithms they're implementing. So they write code in the way that seems natural, that happens intuitively, and that feels good.But if you're serious about your profession, intuition isn't enough. Perl Best Practices author Damian Conway explains that rules, conventions, standards, and practices not only help programmers communicate and coordinate with one another, they also provide a reliable framework for thinking about problems, and a common language for expressing solutions. This is especially critical in Perl, because the language is designed to offer many ways to accomplish the same task, and consequently it supports many incompatible dialects.With a good dose of Aussie humor, Dr. Conway (familiar to many in the Perl community) offers 256 guidelines on the art of coding to help you write better Perl code--in fact, the best Perl code you possibly can. The guidelines cover code layout, naming conventions, choice of data and control structures, program decomposition, interface design and implementation, modularity, object orientation, error handling, testing, and debugging.They're designed to work together to produce code that is clear, robust, efficient, maintainable, and concise, but Dr. Conway doesn't pretend that this is the one true universal and unequivocal set of best practices. Instead, Perl Best Practices offers coherent and widely applicable suggestions based on real-world experience of how code is actually written, rather than on someone's ivory-tower theories on howsoftware ought to be created.Most of all, Perl Best Practices offers guidelines that actually work, and that many developers around the world are already using. Much like Perl itself, these guidelines are about helping you to get your job done, without getting in the way.Praise for Perl Best Practices from Perl community members:"As a manager of a large Perl project, I'd ensure that every member of my team has a copy of Perl Best Practices on their desk, and use it as the basis for an in-house style guide."-- Randal Schwartz"There are no more excuses for writing bad Perl programs. All levels of Perl programmer will be more productive after reading this book."-- Peter Scott"Perl Best Practices will be the next big important book in the evolution of Perl. The ideas and practices Damian lays down will help bring Perl out from under the embarrassing heading of "scripting languages". Many of us have known Perl is a real programming language, worthy of all the tasks normally delegated to Java and C++. With Perl Best Practices, Damian shows specifically how and why, so everyone else can see, too."-- Andy Lester"Damian's done what many thought impossible: show how to build large, maintainable Perl applications, while still letting Perl be the powerful, expressive language that programmers have loved for years."-- Bill Odom"Finally, a means to bring lasting order to the process and product of real Perl development teams."-- Andrew Sundstrom"Perl Best Practices provides a valuable education in how to write robust, maintainable Perl, and is a definitive citation source when coaching other programmers."-- Bennett Todd"I've been teaching Perl for years, and find the same question keeps being asked: Where can I find a reference for writing reusable, maintainable Perl code? Finally I have a decent answer."-- Paul Fenwick"At last a well researched, well thought-out, comprehensive guide to Perl style. Instead of each of us developing our own, we can learn good practices from one of Pe...

Many programmers code by instinct, relying on convenient habits or a "style" they picked up early on. They aren't conscious of all the choices they make, like how they format their source, the names they use for variables, or the kinds of loops they use. They're focused entirely on problems they're solving, solutions they're creating, and algorithms they're implementing. So they write code in the way that seems natural, that happens intuitively, and that feels good.But if you're serious about your profession, intuition isn't enough. Perl Best Practices author Damian Conway explains that rules, conventions, standards, and practices not only help programmers communicate and coordinate with one another, they also provide a reliable framework for thinking about problems, and a common language for expressing solutions. This is especially critical in Perl, because the language is designed to offer many ways to accomplish the same task, and consequently it supports many incompatible dialects.With a good dose of Aussie humor, Dr. Conway (familiar to many in the Perl community) offers 256 guidelines on the art of coding to help you write better Perl code--in fact, the best Perl code you possibly can. The guidelines cover code layout, naming conventions, choice of data and control structures, program decomposition, interface design and implementation, modularity, object orientation, error handling, testing, and debugging.They're designed to work together to produce code that is clear, robust, efficient, maintainable, and concise, but Dr. Conway doesn't pretend that this is the one true universal and unequivocal set of best practices. Instead, Perl Best Practices offers coherent and widely applicable suggestions based on real-world experience of how code is actually written, rather than on someone's ivory-tower theories on howsoftware ought to be created.Most of all, Perl Best Practices offers guidelines that actually work, and that many developers around the world are already using. Much like Perl itself, these guidelines are about helping you to get your job done, without getting in the way.Praise for Perl Best Practices from Perl community members:"As a manager of a large Perl project, I'd ensure that every member of my team has a copy of Perl Best Practices on their desk, and use it as the basis for an in-house style guide."-- Randal Schwartz"There are no more excuses for writing bad Perl programs. All levels of Perl programmer will be more productive after reading this book."-- Peter Scott"Perl Best Practices will be the next big important book in the evolution of Perl. The ideas and practices Damian lays down will help bring Perl out from under the embarrassing heading of "scripting languages". Many of us have known Perl is a real programming language, worthy of all the tasks normally delegated to Java and C++. With Perl Best Practices, Damian shows specifically how and why, so everyone else can see, too."-- Andy Lester"Damian's done what many thought impossible: show how to build large, maintainable Perl applications, while still letting Perl be the powerful, expressive language that programmers have loved for years."-- Bill Odom"Finally, a means to bring lasting order to the process and product of real Perl development teams."-- Andrew Sundstrom"Perl Best Practices provides a valuable education in how to write robust, maintainable Perl, and is a definitive citation source when coaching other programmers."-- Bennett Todd"I've been teaching Perl for years, and find the same question keeps being asked: Where can I find a reference for writing reusable, maintainable Perl code? Finally I have a decent answer."-- Paul Fenwick"At last a well researched, well thought-out, comprehensive guide to Perl style. Instead of each of us developing our own, we can learn good practices from one of Pe...


Interface Module

Automotive Human Machine Interfaces (HMI) Redefined

Human Machine Interfaces, or HMIs, traditionally consist of multiple systems which allow drivers to interact with their vehicle. In today's automotive designs, the HMI also displays any feedback from the vehicle to the driver. This interaction begins the instant one unlocks the car door, continues while driving, and ends the moment the driver gets out and locks the car. It involves the optimal balance of the driver's sensory inputs to make the driving experience both safe and enjoyable. Some of the more commonly recognized HMI system modules for enhancing the driver's experience are keyless entry, power seats control, side mirror control, occupant detection, and most importantly, the vehicle’s center stack where the majority of human-machine interactions take place.

Today, more and more companies are venturing to introduce technologies one would expect to be consumer electronics features into vehicles. In addition, the HMI is being extended to allow drivers to control and access personal electronics devices, from cell phones to mp3 players, through the car's infotainment system.

How drivers interact with these systems is also changing as mechanical buttons give way to capacitive touch inputs, resistive touch screens to capacitive touch screens, standard bulbs to high brightness LEDs, and standard color to color mixing solutions.

The automotive industry is going through a Human Machine Interface revolution that continues to change the way drivers and passengers interact with their cars. Looking back at some of the new products introduced during the past few years, and knowing what exists in the development pipeline, one can, with some confidence, project what features drivers might be able to select from when buying a new car.

One challenge the automotive market faces is how quickly it can adopt and adapt to these new technologies. Today, semiconductor companies offer a wide range of automotive qualified products with integrated development tools to empower automotive system designers to design-in, test, optimize, and launch designs one might otherwise only see in the consumer electronics arena. Capacitive touch technology, for example, offers flexibility and a high level of customization, enabling automotive designers to merge new features with already existing mechanical designs for functionality enhancement, button replacement, touchpad input device, capacitive touch screens, proximity sensing, or a combination thereof.

****Based on Cypress’ PSoC family of mixed signal array products, CapSense expands the standard analog programmability of PSoC by providing a flexible and cost effective means for implementing capacitive sensing, proximity detection, and capacitive touch screens on a single chip. Scope of integration depends on product used and internal chip resources available. http://www.cypress.com/psoc

Button Enhancement

Button enhancement refers to the use of capacitive sense technology to complement or expand the functionality of traditional mechanical buttons. With the functional integration in infotainment modules, buttons can be programmed to match driver preferences. Capacitive sensing provides important value by adding another functional layer as simple as button function preview or proximity detection as described in the proximity sensing section below.

Button functions can range from radio station presets, saved playlists, and phone number speed dials, to favorite destinations in navigation systems. Capacitive touch can also be used as a redundancy safety feature to detect a stuck-switch failure mode for function-critical mechanical switches such as an ESC (Electronic Stability Control) Off switch.

Button Replacement

Button replacement is the full implementation of capacitive touch buttons with the removal of all mechanical components from the module switch panel as shown in Figure 2. Capacitive sensing, in this case, provides freedom of design by removing restrictions imposed by mechanical designs such as curvatures, overlay material, and most importantly, manufacturability of complex designs.

Proximity sensing can also be integrated to provide a higher level of integration by disabling controls or turning off panel backlighting until proximity is detected, at which point the system wakes up and returns to full operation. Another value is the added system reliability provided by the elimination of mechanical components which can fail over time and the ability to use a single-piece panel design that provides a sealed design against elements found in the passenger cabin (i.e., all liquids and particles such as dust). Button replacement does pose new design challenges, however, as it can be overcome. Mechanical buttons provide tactile feedback while capacitive touch-based designs rely on feedback from other human sensory inputs such as vision (LED button status) and hearing (buzzer).

Touchscreen and Touchpads

Although visually similar to capacitive touchscreens, resistive touchscreens still have mechanical properties – resistive touchscreens are based on pressure detection rather than touch sensing – which affect their durability and performance in automotive environments and over the life of the vehicle. Capacitive touchscreens will gain traction in new infotainment systems due to their durability over time and across the automotive temperature range as well as their resistance to scratches and higher transparency versus resistive touchscreens. As higher transparency is directly correlated to system power consumption since it requires lower backlighting intensity, this in turn reduces overall power consumption in systems where power management is highly complex due to the tight packaging and location of the electronic modules. Figure 3 shows an example implementation of a navigation unit with capacitive touch pads embedded in the bezel.

For center stack designs utilizing a mechanical input controller (joystick-like controller) rather than a touchscreen, touchpads offer, in addition to conventional menu control (similar to a laptop touchpad), extended features such as handwriting recognition and all the advantages a touch sense device offers compared to a mechanical design.

Proximity Sensing

Proximity sensing goes beyond button enhancement and button replacement. With proximity sensing, buttons can be completely removed, giving way to full design flexibility and module packaging as well as increased reliability. Proximity sensing applications are mainly tied to illumination control and can be implemented in dome light assemblies (see Figure 4), door pocket lighting applications, and storage compartments. User detection is another proximity sensing application when implemented in the door handle (passive keyless entry) and in the vehicle center stack (to detect whether the driver or passenger is reaching for the controls and to customize button functions accordingly.)

Conclusion

With the single concept of capacitive sensing, HMI designs will be re-invented without being limited by the constraints previously set by mechanical components. Time will tell how quickly and widely Tier 1 and OEM will adopt this technology, but seeing the traction capacitive sensing made in the consumer market, many car enthusiasts hope the process will be quick and across all major automotive platforms.

About the Author

Hassane El-Khoury is a Applications Engineer Staff at Cypress Semiconductor Corp. For more information go to Human Machine Interfaces

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