It would be simple if every computer that connects to the Internet could have its own static IP number, but when the Internet was first conceived, the architects didn’t foresee the need for an unlimited number of IP addresses. Consequently, there are not enough IP numbers to go around. To get around that problem, many Internet service providers limit the number of static IP addresses they allocate, and economize on the remaining number of IP addresses they possess by temporarily assigning an IP address to a requesting Dynamic Host Configuration Protocol (DHCP) computer from a pool of IP addresses. The temporary IP address is called a dynamic IP address.

Requesting DHCP computers receive a dynamic IP address (think temporary phone number) for the duration of that Internet session or for some other specified amount of time. Once the user disconnects from the Internet, their dynamic IP address goes back into the IP address pool so it can be assigned to another user. Even if the user reconnects immediately, odds are they will not be assigned the same IP address from the pool. To keep our telephone telephone analogy going, using a dynamic IP address is similar to using a pay phone. Unless there is a reason to receive a call, the user does not care what number he or she is calling from.

There are times, however, when users who connect to the Internet using dynamic IP wish to allow other computers to locate them. Perhaps they want to use CU-SeeMe or use a VoIP application to make long distance phone calls using their IP connection. In that case, they would need a static IP address. The user has two choices; they can contact their ISP and request a static IP address, or they can use a dynamic DNS service. Either choice will probably involve an additional monthly fee.

Using a dynamic DNS service works as if there was an old-fashioned telephone message service at your computer’s disposal. When a user registers with a DNS service and connects to the Internet with a dynamic IP address, the user’s computer contacts the DNS service and lets them know what IP address it has been assigned from the pool; the service works with the DNS server to forward the correct address to the requesting DHCP computer. (Think of calling the message service and saying “Hi. I can be reached at 435.44.32.111 right now. Please tell anyone who tries to reach me to call that number.) Using a dynamic DNS service to arrange for computers to find you even though you are using a dynamic IP address is the next-best thing to having a static IP.

IPv6, which has also been called “IPng” (IP Next Generation), lengthens IP addresses from 32 bits to 128 bits and increasesthe number of available IP addressess significantly, making static IP addresses easier and less expensive to obtain and maintain.

Ruby on Rails (also known as RoR and Rails) is a Web application framework written in Ruby, an object-oriented programming language known for its clean syntax. Released in 2004, RoR is an open-source project that originally served as the foundation of a project management tool designed by Web development company 37signals LLC. It is easily ported among Linux, Windows and Macintosh environments, and it can have a dramatic impact on the speed at which a Web development team is able to build and maintain enterprise Web sites and applications.

Equal parts design philosophy and development environment, Rails offers developers a few key code-level advantages when constructing database-backed Web applications. One of the central tenets emphasizes using less code for application development by avoiding redundancy and following Rails conventions. This means increased performance and, ideally, decreased development times.

For instance, the Ruby on Rails Web site offers tutorials for creating a Web-based search engine for Flickr in five minutes or building a complete weblog in 15 minutes. RoR also allows for easy utilization of Asynchronous JavaScript and XML (AJAX) technologies.

Thanks to these efficiencies and the open-source nature of the Web development framework, Ruby on Rails is experiencing a tremendous surge in popularity. Notable apps and sites built on Rails include 37signals’ own Basecamp project management tool, the Jobster job search site and Revolution Health, an interactive health information site headed by former AOL LLC CEO Steve Case. And Apple has announced that Mac OS X 10.5 (code-named “Leopard”) will ship with Rails bundled into the operating system when it is released this spring.

For more details on Ruby on Rails, see the official Ruby on Rails Web site, Wikipedia RoR entry.

Enter Ultra-Wideband (UWB). A technology for rapidly transmitting data over radio in the 3.1- to 10.6-GHz range, UWB is capable of generating data transfer rates approaching 500Mbit/sec. with relatively low power consumption. By way of contrast, Bluetooth’s top speed is only 2.1Mbit/sec.

One of the underlying strengths of Ultra-Wideband is that it uses data-rich repeated pulses of energy in the radio spectrum to transmit data. These pulses have a fairly short range of 30 feet. In contrast to most wireless systems, which typically transmit data over a narrow band of frequencies, UWB transmissions occur over a much wider spectrum of radio frequencies. Here’s an example of how it works: Imagine mopping a floor. As you increase the width of the mop, you can cover a greater surface area on the floor.

The other advantage that these short, powerful waves have over conventional wireless transmissions is that because they are so short, they are less subject to interference and cancellation effects.

There are currently two competing UWB specifications: one proposed by the UWB Forum and another championed by the WiMedia Alliance. Neither specification has yet to be ratified as “official.” However, the WiMedia Alliance’s UWB spec has received Intel’s backing, making it the frontrunner in this classic Betamax-vs.-VHS turf war. The chipmaker has a page on its Web site that indicates some of this emerging standard’s advantages, including the following:

• The ability to wirelessly connect a mobile computer or PDA to a digital projector

• The ability play digital video from a camcorder onto an HDTV without having to connect any wires

• The ability to transmit information from a PC (or any device for that matter) to a printer, scanner or any other device

Still not convinced about UWB? In 2006, the Bluetooth technology specification team announced that it will integrate the WiMedia Alliance’s UWB specification into the Bluetooth standard in a future iteration. This will result in a significant boost of Bluetooth’s capabilities. The end result will likely be a quantum leap forward in personal-area networking.

First consider Intel’s upcoming Penryn processor architecture. Currently, Intel is fabricating the vast majority of its CPUs — including the highly popular Core 2 Duo line — on a 65-nanometer process. However, in recent months, the chipmaker has successfully manufactured prototypes of a processor fabricated on a 45nm process. And both Intel and IBM have recently announced the development of a new “high-k” insulating material that will enable the two chipmakers to shrink CPU die size to 45nm without losing thermal or electrical efficiencies.

For Intel, the end result of this process will be a brand-new CPU architecture. With a possible release date of late 2007 or early 2008, Penryn processors will likely boast increased performance and battery life, and this architecture could lay down a foundation that would allow for eight, 16 or even 32 CPU cores on a single processor die.

AMD’s microprocessor plans are no less ambitious. In some ways, they’re even more advanced than Intel’s because they embrace a new trend in CPU design known as heterogeneous processing.

Based on recent public announcements, it appears that in the coming year, AMD will leverage its recent acquisition of graphics chip manufacturer ATI Technologies Inc. to produce a brand-new series of processors code-named “Fusion” that combine traditional CPUs and graphics processing units into a dual- or quad-core central processing unit.

In theory, this model allows for a PC desktop, laptop, or server to use a standard CPU core to perform standard PC/OS functions, while specialist cores tackle other tasks, such as 3D graphics or floating-point-intensive calculations. AMD’s proprietary name for its take on heterogeneous processing is Advanced Processing Unit.

One of the most interesting subplots regarding the development of advanced CPU architectures is the broad implications these new CPU designs will have on the future design and development of software, motherboards and more. An Intel research group, for instance, is exploring the greater ramifications of an 80-core CPU at the hardware and software level.

Finally, software developers are beginning to develop multi-threaded applications designed to accommodate multiple processing cores by sending whole chunks of program code instructions to separate CPU cores. Without multi-threaded applications, the performance potential of multicore processors is greatly reduced. As Ars Technica LLC describes in its very interesting account of the challenges programmers face in writing multi-threaded code, it’s no easy task, but one that could have huge speed and efficiency payoffs in the long run.

Whew! There you have it: Five technologies that will make your computing life faster and more efficient. Which means easier. Which means happier.

Now it’s your turn. Which technologies do you have your eye on right now? Remember, these should be technologies that you think will have a solid impact on computing in the very near future. Sen dus your comments!

NAND (which stands for “Not and”) is a type of flash memory technology that excels at reading, writing and erasing data from flash memory. NOR (short for “Not or”) is the other type of flash-based storage and is better suited for retrieving data from smaller devices like cell phones. NAND’s strengths make it ideally suited for larger-storage drives.

Recognizing the appeal of solid-state mass-storage drives, a number of memory manufacturers have begun to develop flash memory drives for inclusion in laptops and other portable devices. In early 2006, Samsung Corp. announced the development of a 32GB NAND drive that it touted as a “hard-drive” killer, and both Samsung and Sony Corp. have released notebooks with flash-based drives in Asia. A number of other notebook manufacturers, including Toshiba Corp. and Lenovo Group Ltd., have expressed a desire to integrate memory drives into notebook computers.

Recent reports have indicated that solid-state hard drives are being built with data throughput capacity of up to 62MB/sec. This is close to 100 times faster than conventional hard drives.

The kicker? The 32GB drive that SanDisk Corp. claims is capable of these speeds has a 1.8-in. design. Finally, because of their small size and lack of moving parts, NAND drives consume a fraction of the energy and generate a small percentage of the heat of standard disk-based drives.

The downside of NAND drives is that these tiny drives cost upwards of $500 or $600. That’s a lot of budget room to spend on a 32GB drive, which explains why technology hasn’t been implemented in more laptop configurations.

Perhaps as a short-term measure while the price per gigabyte of fixed-drive NAND storage drops — a market condition that appears to be developing courtesy of industry oversupply — drive manufacturers are beginning to experiment with and embrace hybrid hard drives that use both traditional moving parts as well as NAND storage.

The working concept behind these drives is a NAND cache of substantial enough size (under 1GB, with initial sizes ranging from 128MB to 256MB) to store a high number of the small, frequently accessed files that operating systems and users work with. Caching these files allows the main drive to shut down during standard system operation, reducing power consumption and extending battery life. In the summer of 2006, Samsung announced plans to release one such hybrid hard drive at the same time Microsoft Corp. released Windows Vista. This product is still pending.

Intel Corp. has also been smart enough to pick up on this awkward stage of drive technology. The company’s pending flash cache technology, code-named “Robson,” permits faster hard-drive throughput by using a flash memory cache on the motherboard to speed up disk-based data transfers.

Microsoft also understands the importance of hybrid hard drives. ReadyDrive, one of Windows Vista’s new features, was created to accommodate and enhance the performance of hybrid drives by intelligently storing the most frequently accessed files on this cache. The new operating system also includes native support for solid-state drives via ReadyBoost, another new feature that allows Windows to use flash memory devices as additional memory caches or even as boot disks to enhance performance. This is welcome relief for those of us holding onto the promise of pure, solid-state drives.