(1) In object technology, a user-defined data type that defines a collection of objects that share the same characteristics. An object, or class member, is one instance of the class. Concrete classes are designed to be instantiated. Abstract classes are designed to pass on characteristics through inheritance. See instantiate.
(2) In networking, a categorization of a packet based on attributes such as protocol, port and source and destination addresses.
(2) In networking, a categorization of a packet based on attributes such as protocol, port and source and destination addresses.
 | Reproduced with permission from Computer Desktop Encyclopedia. Copyright (c) 1981-2009 The Computer Language Company Inc. All rights reserved. |
Additional Resources
- Facebook creates dual class structure; No plans for IPO yet
- Facebook has created a dual class structure that could be seen as a move to lay the groundwork for an initial public offering. However, the company said there are "no plans to go public at this time." by Larry Dignan
- Blog posts 2009-11-24
- Research paints ugly IT employment picture: Almost 2 million jobs gone in 14 years
- Depressing...So much innovation happened in America in the 90's. Alot of what we have now was accomplished by American engineers, and now we are not being included anymore because of what? Arbitrage. Sad, Sad, Sad....Of courseBecause all these CEOs and wannabe businesspeople think quality doesn't matter so...
- Discussion threads 2009-11-20
- Apple iMac (21.5-inch, 3.06Hz Intel Core 2 Duo, Nvidia GeForce 9400M, Fall 2009)
- We awarded Apple an Editors' Choice for its new $1,699 iMac, largely because its 27-inch screen dwarfs its competition in that price range. So what to make of Apple's new lower-end iMac? At $1,199, its 21.5-inch screen is hardly the size leader for its price, and without a touch screen...
- Product reviews 2009-11-17
- The emergency room myth busted
- ok Dana 1 troll 0 This is a real sucker punch that i never saw coming ....Dana you are getting nastier by each post what next chomsky on the reading list :)thx for they excellent link well its hurt Racism at the heart of healhcare reform opposition.Who are more likely...
- Discussion threads 2009-11-17
- MyPhone Theme Precision (Mobile)
- The BEST pal theme for MyPhone App on BB. A theme with default icons, the classical BB style for those crazy BBers.Features: 1. From MMMOOO Art Designing team, with first class quality 2. Classical MyPhone style with default icons 3. Speedy, steady & simply operation with cool dock, a theme...
- Software downloads 2009-11-17
- 2010 Audi A5 Cabriolet
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- Product reviews 2009-11-16
- Zvox Z-Base 575
- Photo gallery:Zvox Z-Base 575Sound bars feel like they've been around forever now, but they're still a relatively new product; consider that the groundbreaking Yamaha YSP-1 debuted back at CES 2005. Since then, the exterior design of the units hasn't changed much, with the vast majority still consisting of a long...
- Product reviews 2009-11-16
- Toshiba Satellite E105-S1802
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- Product reviews 2009-11-16
- Vizio VO320E
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- Product reviews 2009-11-16
- Toshiba 32AV502U
- Photo gallery: Toshiba AV502U seriesWhen we say the Toshiba AV502U series can produce relatively deep black levels, the key word is "relatively." It's perhaps more accurate to say that its shade of black outdoes most other less-expensive, lower resolution small-screened LCDs we've seen by a narrow margin. It...
- Product reviews 2009-11-16
- MyPhone Theme Precision 1.0 (Mobile)
- The BEST pal theme for MyPhone App on BB. A theme with default icons, the classical BB style for those crazy BBers.Features: 1. From MMMOOO Art Designing team, with first class quality 2. Classical MyPhone style with default icons 3. Speedy, steady & simply operation with cool dock, a theme...
- Software downloads 2009-11-16
- Spelling Depot 2010r1 (Mac)
- Spelling Depot is the student and educator's one-stop solution for the practice, assessment, and ultimate mastery of spelling lists. Word lists can be generated within the program or imported from a word processor document. Each word can, optionally, include the word's definition. Word lists can be of any length. During...
- Software downloads 2009-11-15
- Samsung Mythic SGH-A897 (AT&T)
- Even though AT&T launched its live mobile TV service more than a year ago, but few support it-- the last one we saw was the Samsung Eternity, which was released in October 2008. Now it seems that AT&T may be looking to breathe fresh life to the service by releasing...
- Product reviews 2009-11-14
- Samsung Behold II (T-Mobile)
- Photo gallery:Samsung Behold IIFirst announced at CTIA Fall 2009, the Samsung Behold II is Samsung's second Android device for the U.S. market the Samsung Moment being the first and T-Mobile's fourth Android offering. Based on the Samsung Galaxy Lite, the Behold II tries to set itself apart from the crowd...
- Product reviews 2009-11-13
- Alienware M15x (Intel Core i7 720QM, 250GB HDD, 3GB)
- Keeping the same revised look and feel as the recent 17-inch M17x version, the Alienware M15x is an imposing black slab of computing power that's thicker and heavier than most 17-inch laptops. We love having high-end options such as Intel's uberpowerful Core i7-920XM CPU, and it's a plus that...
- Product reviews 2009-11-13
- Gateway NV7802u
- Editors' note: This review is part of our 2009 Retail Laptop and Desktop Holiday Roundup, which covers specific fixed configurations of popular systems found in retail stores.Gateway continues to offer some of the best bang-for-your-buck retail laptops. The NV7802u is a fine example: It's a 17-inch wide-screen model with a...
- Product reviews 2009-11-13
- Sony Vaio L117FX (Core 2 Quad Q8400s 2.66GHz, 6GB RAM, 1TB HDD, Windows 7 Home Premium)
- Had Apple not introduced a 27-inch iMac for $1,699, we'd have fewer reservations about Sony asking $1,999 for its new 24-inch Vaio L117FX. Yes, HP's TouchSmart 600 expanded on some of Sony's innovations from its previous generation all-in-ones. Sony also doesn't even attempt to match HP's creative multitouch software. But...
- Product reviews 2009-11-13
- HP Pavilion Slimline s5220y
- HP's $480 Pavilion Slimline s5220y is another low-end slim tower PC that offers mediocre performance and equally unexciting performance packaged in a relatively boring case. Its small stature might tempt some of you to use it as a light-duty PC, or even a media-streaming box, but its out-of-date connectivity options...
- Product reviews 2009-11-12
- Canon PowerShot S90
- The Canon PowerShot S90 is designed for photography enthusiasts and it carries a hefty price tag to prove it. It also has some of the best controls you'll find on a compact camera for manual and semimanual shooting modes. Its lens and photo quality are top notch, too. Actually, about...
- Product reviews 2009-11-12
- Palm Pixi (Sprint)
- The debut of the Palm Pre got the tech world and gadget enthusiasts excited about Palm once again. Long considered dead in the water, Palm's innovative WebOS operating system buoyed it back into the spotlight, and the Pre was certainly a boon for the company as well as Sprint. While...
- Product reviews 2009-11-12
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