To the computer, a file is nothing more than a string of bytes. The structure of a file is known to the software that manipulates it. For example, database files are made up of a series of records. Word processing files contain a continuous flow of text.
Except for ASCII text files, which contain only raw text, other files have proprietary structures. Formatting and other types of information are contained in headers or interspersed throughout the file. Following are the major file types. See file association.
Type Contents data file (table) data records document text spreadsheet rows and columns of cells image rows and columns of bits drawing list of vectors audio digitized sound waves MIDI MIDI instructions video digital video frames Web page text batch file text source program text executable program machine language
![]() | Reproduced with permission from Computer Desktop Encyclopedia. Copyright (c) 1981-2008 The Computer Language Company Inc. All rights reserved. |
Additional Resources
- Weekend Gadget Guidance: Sync files between computers over the Web, free
- Freeware application and Web service Dropbox instantly backs up and syncs your files over the Internet and to any Windows or Mac computer. Once you install the application, it will create a Dropbox folder on your hard drive. Any file you put inside that folder will sync...
- Blog posts 2008-07-03
- Microsoft: Silverlight content is searchable, too
- When Adobe, Google and Yahoo announced earlier this week that content stored in its Flash file format would be more easily indexable by Google's and Yahoo's search engines, Microsoft was nowhere to be found. It took a while, but I got Microsoft to explain how/why Silverlight already is indexable.... by...
- Blog posts 2008-07-02
- Firefox 2 dirty dozen: Critical vulnerabilities patched
- Mozilla has shipped a high-priority update for Firefox 2, warning that there are at least five serious vulnerabilities that could lead to code execution attacks. With Firefox 2.0.0.15, Mozilla fixes at least 12 documented vulnerabilities -- five rated critical --Â that could put users at risk...
- Blog posts 2008-07-02
- Remote code execution flaw in VLC Media Player
- Researchers at Secunia have found a "highly critical" vulnerability that puts users of the cross-platform VLC Media Player at risk of remote code execution attacks. The vulnerability is confirmed in version 0.8.6h on Windows. Prior versions may also be affected. Â Â A patch is expected soon from...
- Blog posts 2008-07-02
- PCI-DSS 1.1 points to outdated OWASP Top 10
- OK, I'm not going to freak out about this too bad... I've already pointed out enough problems with PCI, but I did find it morbidly entertaining. My good friend Jeremiah Grossman pictured at right blogged today about the PCI-DSS 1.1 section 6.5, which covers "prevention of common coding vulnerabilities in...
- Blog posts 2008-07-02
- What to do with your first generation iPhone (updated)
- With the launch of the iPhone 3G a little over a week away and new rate plans published many people are wondering what to do with their first generation iPhones. An AppleInsider story lists a bunch of options including handing it down to a family member or...
- Blog posts 2008-07-02
- Demystifying BIOS updates - The DOs and DO NOTs
- Demystifying BIOS updates - The DOs and DO NOTsSome of this advice is overly-cautious ...[i]When there’s a darn good reason for doing the update (as a rule I find that if I buy a cutting-edge board then there can be a lot of BIOS updates released over a short period...
- Discussion threads 2008-07-02
- Microsoft Equipt: student productivity rise likely?
- Probably not. But it's not a bad thing Microsoft have done, and it really shows that they're committed to this "student malarkey" we have going. Today, they announced that project "Albany", now called Microsoft Equipt, has been released into the wild, for the masses who want an all-round suite of...
- Blog posts 2008-07-02
- New Microsoft Office subscription bundle to hit in mid-July
- New Microsoft Office subscription bundle to hit in mid-JulyVery nice comboI can't wait for computer manufacturers and builders to start bundling this with systems. Seems like a good idea - like software assurance for home users.RE: New Microsoft Office subscription bundle to hit in mid-JulyI think you can have...
- Discussion threads 2008-07-02
- OMG! texting is so expensive
- OMG! texting is so expensiveSeems ReasonableI don't understand the allure of texting, but that's beside the point. The price increase seems perfectly reasonable to me, if texting is too expensive folks can stop texting.RE: OMG! texting is so expensiveIn America people just buy liabilities. Without them I wouldn't be...
- Discussion threads 2008-07-02
- How Linux app install leaves one PC expert befuddled
- Adrian, you dumb arse! At least that was my initial reaction when I read his "Linux's dirty little secret" column about his struggles with installing applications onto a Linux distro. It was either the Linux Geek rage originating from the knowing that he didn't Read the Fine...
- Blog posts 2008-07-02
- Costing Sun Ray vs Wintel
- Costing Sun Ray vs WintelSo, you like Sun Ray, Yes? KiddingSeriously, interesting article--Sun Ray is looking better and better!There are so many good reasons to consider using Thin Client. Sun Ray just reinforces that.A few questionsWhy did you so much oversize the client. why use E7200 core duo ? why...
- Discussion threads 2008-07-02
- FreeFTP (exe)
- Free FTP is a multithreaded FTP client with the look-and-feel of Windows Explorer, and makes moving files between the Internet and your computer as simple as local file manipulation. FreeFTP can be used for: Web site publishing and maintenance, Upload and download of images, documents, movie and music files Create...
- Software downloads 2008-07-02
- ClicksAndWhistles (exe)
- ClicksAndWhistles is a free IRC client for Windows. It supports multiple server connections and identities. Desktop and tabbed windows, connection explorer and connection monitor, themes and color schemes including PNG backgrounds and outline fonts. Support for unicode (UTF-8) and customizable messages is included. Full text formatting support is included...
- Software downloads 2008-07-02
- What should your email archiving policy look like?
- What should your email archiving policy look like?Using ONE email acct. for workLooks like it's time to employ a 3rd part vendor or create your own content filter to block access to gMail, Hotmail, etc.In our school, we have decided to go through a 3rd party that works with us....
- Discussion threads 2008-07-01
- Adobe makes Flash searchable, crawlable
- It's not gadget news per se, but if you consider Adobe Flash a tool in your arsenal, this is big news. Posted on Slashdot today is news that Adobe has figured out a way to make Flash crawlable by search engines: Today Adobe systems made an...
- Blog posts 2008-07-01
- First impressions of the HP iPAQ 910 Business Manager
- First impressions of the HP iPAQ 910 Business Managerquestions on the 910Look forward to your review of the 910.I have the ff questions. I asked HPsome of these questions and they haven'tgoten back to me.1. Does the Micro SD slot support SDHC?2. I have the prior version of this...
- Discussion threads 2008-07-01
- Hyper-V: The no-brainer virtualization stack for Windows
- Last Thursday, Microsoft released the final version of Hyper-V, the much anticipated built-in hypervisor for Windows Server 2008. Back in February, we had a look at a late beta release, and we were quite impressed with the performance of the system and how easy it was to manage virtual machines....
- Blog posts 2008-07-01
- A boon to the Webtop: Adobe makes indexing Flash in search easier
- It's a big day for rich Internet applications. Why? You can now find these newfangled Web applications a lot easier. Google, Yahoo and Adobe have teamed to make Flash file format content easier to find. Adobe said in a statement Tuesday that it has worked with Google...
- Blog posts 2008-07-01
- MultiFind (exe)
- MultiFind is an easy to use utility for file search and replace. It allows searching for files by text string, binary data, regular expression, file size, file date and more. Key feature of MultiFind is that multiple searches/replaces can exist at the same time. Each of them appears in the...
- Software downloads 2008-07-01
Neighboring Terms
Premier Vendor Content Whitepapers, webcasts & resources from our Power Center Sponsors
- Learn how collaboration fuels success with this FREE Economist report
-
According to a new study from the Economist, future success belongs to those who collaborate effectively. Learn how successful collaboration can improve profits, problem-solving, and competitive differentiation.
- Visit Cisco's Collaboration Resource Center today!
- Which solar technology will survive?
-
At the Cleantech Forum in San Francisco, Todd Glass of Heller Ehrman moderates a discussion, among tech execs, on the various solar technologies making a difference in the green movement.
- Watch the video >>
- New entries posted to Know Issues, Best Practices and Workarounds Wiki
-
Latest Topics: Running virtual machines and DHCP can cause Intel® AMT to be inaccessible; Wildcard certificates are currently not supported for remote; Dell 755 returns a duplicate UUID during activation configuration.
- See the latest entries on the Intel Wiki >>
The Green Enterprise
-
- A look into the enterprise to explore eco-friendly practices and innovations. In this ZDNet video series learn about what's motivating green tech, and how green technologies are impacting IT. 0:42
-
Harnessing the power of waves
3:13
-
Planting solar gardens
5:06
-
Fill your car for $1.10 a gallon?
1:43
- All series videos »




