Searching for one item in a list or matrix of data (the table). Table lookups are used in countless operations to obtain a value or set of values such as retail and wholesale prices, product descriptions, street addresses, network routes, IP addresses and machine addresses. For example, in data entry validation, table lookups are used to acquire the valid range of values for each item entered.
Software or Hardware
Table lookups are mostly performed by routines in software. However, to speed up operations, especially in networks, they can be performed in hardware. For example, routers and switches may have table lookup circuits for faster packet routing. See table, address resolution and routing protocol.
Software or Hardware
Table lookups are mostly performed by routines in software. However, to speed up operations, especially in networks, they can be performed in hardware. For example, routers and switches may have table lookup circuits for faster packet routing. See table, address resolution and routing protocol.
 | Reproduced with permission from Computer Desktop Encyclopedia. Copyright (c) 1981-2008 The Computer Language Company Inc. All rights reserved. |
Additional Resources
- A 1968 computer demo that changed people's lives
- Can a computer demo change people's lives? I've seen plenty in my time but none that moved me in any significant way. Yet 40 years ago, Doug Engelbart gave a demo that did change people's lives and changed the entire course of computer systems development. On Monday...
- Blog posts 2008-12-02
- Where to next for ERP et al? (part 1, SAP)
- With a Gartner probability of 0.9, I guarantee that what follows is not how things will turn out. At least not exactly. Paul Greenberg's post casting the enterprise CRM runes for 2009 provides the perfect springboard for something I've been thinking about since the middle of the year. Where the...
- Blog posts 2008-12-02
- 'Semantic Web for Business' ultimately misses the mark
- Weighing in at 416 text-packed pages, Semantic Web for Business could have been the latest attempt to bridge the divide between the university hotbeds of Semantic Web research and a business community ripe for persuading of semantic technologies' multifarious benefits. In that, though, the volume proves ultimately unsatisfying and a...
- Blog posts 2008-12-02
- Sun warns of bugs as it releases MySQL 5.1
- MySQL's founder has released version 5.1 of the open-source database software, but simultaneously warned of a number of bugs present in the new features that still need to be fixed. Sun has released version 5.1 of the open-source MySQL database software, but the software's founder simultaneously warned...
- News items 2008-12-01
- Icahn: 'I like Jerry'; Yahoo needs Microsoft search deal
- Carl Icahn says he likes Jerry Yang and notes the former Yahoo CEO is a "charismatic guy," but Yahoo needs to do a Microsoft search deal since the company can't afford to fight Google. Icahn's remarks, made in an interview with Barron's subscription required a few days...
- Blog posts 2008-11-29
- Don't call me a 'mommyblogger' - the Motrin brouhaha
- * Jennifer Leggio is on vacation Guest editorial by Joanne Bamberger Things got a little heated in the blogosphere last week over a Motrin ad suggesting that babies were the new mommy accessory. I don't know what was going on the...
- Blog posts 2008-11-28
- Automated invoice template
- If you're looking for a convenient, no-frills way to generate invoices, this template may be just what you need. It prompts for client information, includes a table for listing charges, and calculates taxes and totals for you.For instructions on how to create your own Word invoice template, see this entry...
- Download resources 2008-11-25
- TI execs ramp up green tech contributions, at work and at home
- The trouble with the Green IT blog beat is there are literally hundreds of things that you could write about every day, often from the same company, but since this isn't the ONLY thing I do to put food on my table, I have to be really selective about which...
- Blog posts 2008-11-24
- Ulteo offers server based computing solution for Linux desktops, apps
- Ulteo is now offering what Microsoft and Citrix will not: a server based computing solution for the Linux desktop and Linux applications. The company, which late last year launched the first OpenOffice open source desktop online, has announced the availability of the Open Virtual Desktop...
- Blog posts 2008-11-21
- iPhone update kills 12 security bugs
- Apple has released iPhone OS 2.2 with patches for 12 documented security flaws, some very serious. The vulnerabilities covered by the patch which also affect iPod Touch could allow remote code execution, information theft, software crashes and weakened encryption settings. The skinny on this...
- Blog posts 2008-11-21
- iPhone vs. Android development: Day 3
- This is the 3rd in a series of 5 posts about an iPhone programming course I'm taking this week. The course is presented by Joe Conway from Big Nerd Ranch. To make things more interesting I'm writing about how iPhone development differs from Android development, a subject with which I'm...
- Blog posts 2008-11-19
- What really happened to the candidates' computers?
- Now that two weeks have passed since the end of the presidential campaigns, it is worthwhile to take a look at what I think should have one of the biggest cybercrime stories of the year. As Ryan blogged the day after the election, both the McCain and the Obama...
- Blog posts 2008-11-18
- iPhone vs. Android development: Day 2
- Welcome to day 2 of a 5-day course on iPhone programming presented by Joe Conway from Big Nerd Ranch. During the course I'll be blogging about the differences between Android and iPhone development. [Read: Day 1, Day 2, Day 3, Day 4, Day 5] ...
- Blog posts 2008-11-18
- SAP Trimming Head Count, "Can't Rule Out" Layoffs
- Since the world's economic crisis began in September, SAP AG has adopted a "we do not hire, we do not replace" employment policy. The early results are in. And when you exclude acquisitions (see Business Objects, January 2008), there is one area of the world where...
- Blog posts 2008-11-18
- UPS saves $30M and goes Green with new HP printing and scanning handheld
- UPS partnered with Hewlett-Packard on the new sp400 All-in-One wireless handheld laser barcode scanner combo that can print directly onto packages, which saves paper and streamlines UPS's shipping processes. With all of the news of major corporations losing vast amounts of money...
- Blog posts 2008-11-18
- Yang out: Justice scrutiny paved the way
- Some things are clear. If Jerry Yang had merely been doing a lousy job at running Yahoo, there would have been no "mutual" decision that he should step down as CEO. (NYT: "Jerry and the board have had an ongoing dialogue about succession timing, and we...
- Blog posts 2008-11-18
- Yahoo: Pondering Yang's replacement; The next move
- Now that Yahoo CEO Jerry Yang is out, the handicapping begins. Who will be Yang's replacement and what will that choice reveal about Yahoo's future? The story line Techmeme revolving around Yang's departure is familiar. Yang took over the company at the second worst time in Yahoo's...
- Blog posts 2008-11-18
- Will Microsoft apply 'Vista-Capable' lessons to Win 7 netbooks?
- As the e-mail trail in the "Vista-capable" class-action suit continues to unfold, I can't help but wonder whether Microsoft will apply some of the lessons it hopefully learned about working with OEMs to Windows 7 -- especially in the netbook space. The original suit, filed in March...
- Blog posts 2008-11-17
- Asus launches 'world's fastest' smartphone
- Yes, you read correctly: Asus has unveiled its latest smartphone, which, it claims is the "fastest business PDA phone in the world." Them's big words coming from a mobile underdog. That's because the juice behind the shell of the Asus P565 is an 800MHz...
- Blog posts 2008-11-17
- 'Memoryze' utility pinpoints malware code in live memory
- Jamie Butler, a Windows internals expert who co-wrote the definitive book on rootkits, has created a free forensics tool capable of finding malicious code in live memory. The utility, called Mandiant Memoryze, was released at this year's Hack in the Box conference in Kuala Lumpur, Malaysia. ...
- Blog posts 2008-11-10
Neighboring Terms
Premier Vendor Content Whitepapers, webcasts & resources from our Power Center Sponsors
- Video Podcast: Evaluating 2- and 4-Socket Server Virtualization Platforms
-
In this video we hear from Sudip Chahal, Principal Engineer with the Intel IT Enterprise Architecture Group, talking about a new white paper from IT@Intel, "Evaluating Two- and Four-Socket Server Virtualization Platforms."
- See how different servers would perform in a variety of virtualization scenarios >>
Fusion
- There’s a new energy coming from the people of AMD. Its the power of Fusion.
- Learn about the power of fusion at work and the industry-changing impact of accelerated computing.
-
- View AMD video, case studies, blogs, forums, and more on ZDNet »
-
