Gourt > Computers > Programming > Languages > Ada > Operating Systems
An operating system (OS) is a software program that manages the hardware and software resources of a computer. The OS performs basic tasks, such as controlling and allocating memory, prioritizing the processing of instructions, controlling input and output devices, facilitating networking, and managing files.
Introduction
Modern general-purpose computers, including personal computers and mainframes, have an operating system to run other programs, such as application software. Examples of operating systems for personal computers include Microsoft Windows, Linux, Mac OS (Darwin), and Unix.
The main advantages of an operating system include:
- Allows multiple programs to run concurrently.
- Simplifies the programming of application software because the program does not have to manage the hardware. The operating systems manages all hardware and the interaction of software. It also gives the program a high level interface to the hardware and ways of interacting with other programs.
Language OS Hybrids :: Languages
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Shuttleworth: Microsoft Does Not Want War
Thu, 24 Jul 2008 20:50:16 -0400
At OSCON, Mark Shuttleworth, founder of Canonical Ltd. said he doubts Microsoft would file a claim against Linux developers. - PORTLAND, Ore. Mark Shuttleworth, the founder of Canonical Ltd., which maintains the Ubuntu desktop Linux distribution said he doubts Microsoft would file suit against a free software developer unless the software giant wants quot;war. quot; At the end of a session at the O'Reilly Open Source Conv...
Business Continuity and Disaster Recovery: How to Prepare Your Business
Thu, 24 Jul 2008 20:37:48 -0400
Companies frequently don't like to think about Business Continuity (BC), Disaster Recovery (DR), the expense of hot sites or even off-site storage. But, as Michael Croy explains, you have to ask yourself how much you're willing to lose. If you can't afford to lose it, then BC/DR is for you. - In 2008, we have witnessed several significant disasters: The earthquake and subsequent flooding in the Sichuan Province of China, the unexpected and tragic cyclone in Myanmar, devastating tornados in Georgia and Colorado, fires up the coast of Southern California and, most recently, widespread floo...
Researcher Urges Prompt Patch to Fix DNS Flaw
Thu, 24 Jul 2008 20:10:03 -0400
Since attack code for the DNS protocol flaw discovered by security researcher Dan Kaminsky is now public, patching is even more important. - With details of the Domain Name System (DNS) flaw discovered now public and attack code in the wild, security researcher Dan Kaminsky once again is urging IT administrators to patch promptly. The bug can be exploited to poison DNS caches and re-direct Internet traffic to malicious sites. Kaminsky...
Zimbra Yahoo Offline Mail Client Arrives
Thu, 24 Jul 2008 18:09:24 -0400
The Yahoo Zimbra Beta allows all 263 million Yahoo Mail customers to access mail and calendars offline. Zimbra Desktop Beta Version 3, available July 24, will let users run their Yahoo mail as desktop POP or IMAP mail client software. - The Yahoo Zimbra Beta allows all 263 million Yahoo Mail customers to access mail and calendars offline. Zimbra Desktop Beta Version 3, available July 24, will let users run their Yahoo mail as desktop POP or IMAP mail client software. Previously this required a Yahoo Pro account for $19.99 per ...
Interwoven Acquires E-discovery Firm
Thu, 24 Jul 2008 18:01:31 -0400
Content management provider Interwoven will pay $36 million in cash for Discovery Mining, provider of an on-demand electronic records management service. Discovery Mining's service is typically used to sort and organize massive volumes of electronic records during the pre-trial investigative phase of major lawsuits. - Enterprise content management provider Interwoven is extending its reach into the e-discovery software-as-a-service business, which really is little more than a deeper dive into content management. Interwoven announced July 24 it is acquiring six-year-old Discovery Mining, an e-discovery provi...
Garmin Crossover GPS for Handheld GPS and Vehicle GPS
Thu, 24 Jul 2008 17:51:45 -0400
Garmin unveils its latest crossover GPS device, the Nuvi 500 series, at the British Automotive show in London. - Garmin unveiled its latest crossover GPS device, the Nüvi 500 series, the week of July 21 at the British Automotive show in London. As a crossover handheld/vehicle GPS device, the Nüvi has a mode indicator that lets users toggle between automotive, bicycling, boating and walking modes. Unlike ...
The Seattle Times: Business & Technology
Microsoft shakes up Windows, online businesses; a key player in failed Yahoo bid quits
Thu, 24 Jul 2008 11:07:59 -0700
Microsoft Chief Executive Steve Ballmer is taking direct control over two of the company's most important businesses — including competition...
Alaska Air plans job cuts, fare hikes
Thu, 24 Jul 2008 12:23:49 -0700
Ford posts $8.7 billion loss on asset write-downs
Thu, 24 Jul 2008 12:50:09 -0700
Ford Motor Co. posted the worst quarterly performance in its history Thursday, losing $8.67 billion in the second quarter.
NYT > Technology
Complaining Bloggers Have a Cable Company’s Ear
Fri, 25 Jul 2008 01:37:38 -0000
Some customers appreciate Comcast’s responses to online criticism; others say it’s an eerie version of “Big Brother.”
Merger of XM and Sirius a Step Closer to Approval
Thu, 24 Jul 2008 19:38:16 -0000
The F.C.C was set to approve a merger between XM and Sirius and end a nearly 18-month review of a deal that would essentially create a monopoly in satellite radio.
Microsoft ‘Done’ With Yahoo; Expands Ad Deal With Facebook
Fri, 25 Jul 2008 00:51:28 -0000
Steve Ballmer said the company was “done,” for now, with pursuing Yahoo. Meanwhile, Microsoft announced that it will provide Web search and search advertising on Facebook pages.
CNN.com - Technology
Saving whales from deadly ship strikes
Thu, 24 Jul 2008 11:56:47 -0400
In recent years, endangered North Atlantic right whales have been struck and killed by fast-moving commercial ships passing through their feeding grounds. So Canadian scientists came up with a plan.
Study: Girls equal to boys in math skills
Thu, 24 Jul 2008 14:34:25 -0400
Read full story for latest details.
'Solar trees' get to root of energy crisis
Thu, 24 Jul 2008 09:43:11 -0400
Taking inspiration from nature, designer Ross Lovegrove has brought beauty to an everyday object that few give a passing thought to: the streetlamp. Lovegrove's innovative lighting project, the "Solar Tree," is a solar-powered streetlamp that also serves as a piece of modern art.
NPR Topics: Technology
What's The Future Of News?
Thu, 24 Jul 2008 10:20:00 -0400
The content won't change that much, just how it's delivered, says media critic James Ledbetter.
In A Photoshop Age, Can You Believe Your Eyes?
Wed, 23 Jul 2008 14:47:00 -0400
As it gets ever easier to doctor images, will the photograph lose its credibility? A digitally manipulated photo of an Iranian missile launch recently made its way onto major news Web sites, raising concerns about whether images can be trusted. Guests discuss the long history of altered images.
Plug In, Drive On: The Promise of Next-Gen Hybrids
Tue, 22 Jul 2008 15:32:00 -0400
General Motors is partnering with more than 30 North American utility companies to create technology and energy interfaces for the introduction of plug-in hybrid vehicles. Here's a look at the impact that plug-in hybrids might have on consumers' pocketbooks and the environment.
BBC News | Technology | UK Edition
Net firms in music pirates deal
Thu, 24 Jul 2008 09:37:56 -0000
Six of the UK's biggest net providers sign up to a government plan to tackle illegal file-sharing.
'Neglect' of codebreakers' HQ
Thu, 24 Jul 2008 00:48:21 -0000
UK academics sign a letter criticising the ongoing neglect of Bletchley Park - home of the wartime codebreakers.
Payout for false Facebook profile
Thu, 24 Jul 2008 20:35:01 -0000
A businessman wins £22,000 in libel and breach of privacy after his personal details were printed on the Facebook website.
Reuters Video: Technology
UK file pirates to face the music
Thu, 24 Jul 2008 13:16:43 -0400
Jul 24 - Britain's six biggest Internet providers have agreed a plan to send warning letters to those suspected of illegal file-sharing.
Gas guzzlers see long road ahead
Thu, 24 Jul 2008 10:01:39 -0400
Jul 24 - The bane of environmentalists, gas guzzling four-by-fours remain a noticeable feature of the British International Motor Show.
Reuters Quickcut: Torpedo test
Thu, 24 Jul 2008 09:02:49 -0400
Jul 24 - An Australian submarine tests a new heavyweight torpedo during a joint naval exercise with the United States.
AP Top Technology News At 8:15 p.m. EDT
Microsoft defends search investments to analysts
By JESSICA MINTZ Fri, 25 Jul 2008 00:14:36 -0000
REDMOND, Wash. (AP) -- Microsoft's CEO defended the software maker's decision to invest heavily in its unprofitable online business, but shed minimal light Thursday on specific steps it will take to challenge Google in the wake of the failed bid to buy Yahoo....
Major shareholder advisory firm backs Yahoo board
By MICHAEL LIEDTKE Thu, 24 Jul 2008 20:48:15 -0000
SAN FRANCISO (AP) -- An influential shareholder advisory firm endorsed the re-election of Yahoo Inc.'s entire board Thursday, reducing the chances that the Internet company's directors will be ousted for spurning Microsoft Corp.'s $47.5 billion takeover bid during the spring....
Creators of Scrabble knockoff on Facebook sued
By ANICK JESDANUN Thu, 24 Jul 2008 18:51:16 -0000
NEW YORK (AP) -- T-R-O-U-B-L-E could loom for a Scrabble knockoff that has become one of the most popular activities on Facebook....
CNET News.com
California utilities lead in solar energy, report says
Thu, 24 Jul 2008 17:15:00 -0700
West coast utilities are charging ahead with solar plants, but other regions could surpass them soon, according to the Solar Electric Power Association.
EFF: Yahoo Music should compensate customers
Thu, 24 Jul 2008 16:59:00 -0700
Yahoo Music comes under criticism for deciding to stop supporting DRM keys. The Electronic Frontier Foundation should have learned from Microsoft's mistakes.
Cancer doc urges cell phone precaution
Thu, 24 Jul 2008 16:45:00 -0700
Dr. Ronald B. Herberman, director of the University of Pittsburgh Cancer Institute, sends list of precautionary measures to faculty and staff.
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Shuttleworth: Microsoft Does Not Want War
Thu, 24 Jul 2008 20:50:16 -0400
At OSCON, Mark Shuttleworth, founder of Canonical Ltd. said he doubts Microsoft would file a claim against Linux developers. - PORTLAND, Ore. Mark Shuttleworth, the founder of Canonical Ltd., which maintains the Ubuntu desktop Linux distribution said he doubts Microsoft would file suit against a free software developer unless the software giant wants quot;war. quot; At the end of a session at the O'Reilly Open Source Conv...
Business Continuity and Disaster Recovery: How to Prepare Your Business
Thu, 24 Jul 2008 20:37:48 -0400
Companies frequently don't like to think about Business Continuity (BC), Disaster Recovery (DR), the expense of hot sites or even off-site storage. But, as Michael Croy explains, you have to ask yourself how much you're willing to lose. If you can't afford to lose it, then BC/DR is for you. - In 2008, we have witnessed several significant disasters: The earthquake and subsequent flooding in the Sichuan Province of China, the unexpected and tragic cyclone in Myanmar, devastating tornados in Georgia and Colorado, fires up the coast of Southern California and, most recently, widespread floo...
Researcher Urges Prompt Patch to Fix DNS Flaw
Thu, 24 Jul 2008 20:10:03 -0400
Since attack code for the DNS protocol flaw discovered by security researcher Dan Kaminsky is now public, patching is even more important. - With details of the Domain Name System (DNS) flaw discovered now public and attack code in the wild, security researcher Dan Kaminsky once again is urging IT administrators to patch promptly. The bug can be exploited to poison DNS caches and re-direct Internet traffic to malicious sites. Kaminsky...
Zimbra Yahoo Offline Mail Client Arrives
Thu, 24 Jul 2008 18:09:24 -0400
The Yahoo Zimbra Beta allows all 263 million Yahoo Mail customers to access mail and calendars offline. Zimbra Desktop Beta Version 3, available July 24, will let users run their Yahoo mail as desktop POP or IMAP mail client software. - The Yahoo Zimbra Beta allows all 263 million Yahoo Mail customers to access mail and calendars offline. Zimbra Desktop Beta Version 3, available July 24, will let users run their Yahoo mail as desktop POP or IMAP mail client software. Previously this required a Yahoo Pro account for $19.99 per ...
Interwoven Acquires E-discovery Firm
Thu, 24 Jul 2008 18:01:31 -0400
Content management provider Interwoven will pay $36 million in cash for Discovery Mining, provider of an on-demand electronic records management service. Discovery Mining's service is typically used to sort and organize massive volumes of electronic records during the pre-trial investigative phase of major lawsuits. - Enterprise content management provider Interwoven is extending its reach into the e-discovery software-as-a-service business, which really is little more than a deeper dive into content management. Interwoven announced July 24 it is acquiring six-year-old Discovery Mining, an e-discovery provi...
Garmin Crossover GPS for Handheld GPS and Vehicle GPS
Thu, 24 Jul 2008 17:51:45 -0400
Garmin unveils its latest crossover GPS device, the Nuvi 500 series, at the British Automotive show in London. - Garmin unveiled its latest crossover GPS device, the Nüvi 500 series, the week of July 21 at the British Automotive show in London. As a crossover handheld/vehicle GPS device, the Nüvi has a mode indicator that lets users toggle between automotive, bicycling, boating and walking modes. Unlike ...
The Seattle Times: Business & Technology
Microsoft shakes up Windows, online businesses; a key player in failed Yahoo bid quits
Thu, 24 Jul 2008 11:07:59 -0700
Microsoft Chief Executive Steve Ballmer is taking direct control over two of the company's most important businesses — including competition...
Alaska Air plans job cuts, fare hikes
Thu, 24 Jul 2008 12:23:49 -0700
Ford posts $8.7 billion loss on asset write-downs
Thu, 24 Jul 2008 12:50:09 -0700
Ford Motor Co. posted the worst quarterly performance in its history Thursday, losing $8.67 billion in the second quarter.
NYT > Technology
Complaining Bloggers Have a Cable Company’s Ear
Fri, 25 Jul 2008 01:37:38 -0000
Some customers appreciate Comcast’s responses to online criticism; others say it’s an eerie version of “Big Brother.”
Merger of XM and Sirius a Step Closer to Approval
Thu, 24 Jul 2008 19:38:16 -0000
The F.C.C was set to approve a merger between XM and Sirius and end a nearly 18-month review of a deal that would essentially create a monopoly in satellite radio.
Microsoft ‘Done’ With Yahoo; Expands Ad Deal With Facebook
Fri, 25 Jul 2008 00:51:28 -0000
Steve Ballmer said the company was “done,” for now, with pursuing Yahoo. Meanwhile, Microsoft announced that it will provide Web search and search advertising on Facebook pages.
CNN.com - Technology
Saving whales from deadly ship strikes
Thu, 24 Jul 2008 11:56:47 -0400
In recent years, endangered North Atlantic right whales have been struck and killed by fast-moving commercial ships passing through their feeding grounds. So Canadian scientists came up with a plan.
Study: Girls equal to boys in math skills
Thu, 24 Jul 2008 14:34:25 -0400
Read full story for latest details.
'Solar trees' get to root of energy crisis
Thu, 24 Jul 2008 09:43:11 -0400
Taking inspiration from nature, designer Ross Lovegrove has brought beauty to an everyday object that few give a passing thought to: the streetlamp. Lovegrove's innovative lighting project, the "Solar Tree," is a solar-powered streetlamp that also serves as a piece of modern art.
NPR Topics: Technology
What's The Future Of News?
Thu, 24 Jul 2008 10:20:00 -0400
The content won't change that much, just how it's delivered, says media critic James Ledbetter.
In A Photoshop Age, Can You Believe Your Eyes?
Wed, 23 Jul 2008 14:47:00 -0400
As it gets ever easier to doctor images, will the photograph lose its credibility? A digitally manipulated photo of an Iranian missile launch recently made its way onto major news Web sites, raising concerns about whether images can be trusted. Guests discuss the long history of altered images.
Plug In, Drive On: The Promise of Next-Gen Hybrids
Tue, 22 Jul 2008 15:32:00 -0400
General Motors is partnering with more than 30 North American utility companies to create technology and energy interfaces for the introduction of plug-in hybrid vehicles. Here's a look at the impact that plug-in hybrids might have on consumers' pocketbooks and the environment.
BBC News | Technology | UK Edition
Net firms in music pirates deal
Thu, 24 Jul 2008 09:37:56 -0000
Six of the UK's biggest net providers sign up to a government plan to tackle illegal file-sharing.
'Neglect' of codebreakers' HQ
Thu, 24 Jul 2008 00:48:21 -0000
UK academics sign a letter criticising the ongoing neglect of Bletchley Park - home of the wartime codebreakers.
Payout for false Facebook profile
Thu, 24 Jul 2008 20:35:01 -0000
A businessman wins £22,000 in libel and breach of privacy after his personal details were printed on the Facebook website.
Reuters Video: Technology
UK file pirates to face the music
Thu, 24 Jul 2008 13:16:43 -0400
Jul 24 - Britain's six biggest Internet providers have agreed a plan to send warning letters to those suspected of illegal file-sharing.
Gas guzzlers see long road ahead
Thu, 24 Jul 2008 10:01:39 -0400
Jul 24 - The bane of environmentalists, gas guzzling four-by-fours remain a noticeable feature of the British International Motor Show.
Reuters Quickcut: Torpedo test
Thu, 24 Jul 2008 09:02:49 -0400
Jul 24 - An Australian submarine tests a new heavyweight torpedo during a joint naval exercise with the United States.
AP Top Technology News At 8:15 p.m. EDT
Microsoft defends search investments to analysts
By JESSICA MINTZ Fri, 25 Jul 2008 00:14:36 -0000
REDMOND, Wash. (AP) -- Microsoft's CEO defended the software maker's decision to invest heavily in its unprofitable online business, but shed minimal light Thursday on specific steps it will take to challenge Google in the wake of the failed bid to buy Yahoo....
Major shareholder advisory firm backs Yahoo board
By MICHAEL LIEDTKE Thu, 24 Jul 2008 20:48:15 -0000
SAN FRANCISO (AP) -- An influential shareholder advisory firm endorsed the re-election of Yahoo Inc.'s entire board Thursday, reducing the chances that the Internet company's directors will be ousted for spurning Microsoft Corp.'s $47.5 billion takeover bid during the spring....
Creators of Scrabble knockoff on Facebook sued
By ANICK JESDANUN Thu, 24 Jul 2008 18:51:16 -0000
NEW YORK (AP) -- T-R-O-U-B-L-E could loom for a Scrabble knockoff that has become one of the most popular activities on Facebook....
CNET News.com
California utilities lead in solar energy, report says
Thu, 24 Jul 2008 17:15:00 -0700
West coast utilities are charging ahead with solar plants, but other regions could surpass them soon, according to the Solar Electric Power Association.
EFF: Yahoo Music should compensate customers
Thu, 24 Jul 2008 16:59:00 -0700
Yahoo Music comes under criticism for deciding to stop supporting DRM keys. The Electronic Frontier Foundation should have learned from Microsoft's mistakes.
Cancer doc urges cell phone precaution
Thu, 24 Jul 2008 16:45:00 -0700
Dr. Ronald B. Herberman, director of the University of Pittsburgh Cancer Institute, sends list of precautionary measures to faculty and staff.
AdaOS - Goals: create new OS written in Ada language mostly, to help promote Ada; design via typical modern, pragmatic methods; microkernel supporting efficient IPC; fully distributed; advanced secure object system maybe using CORBA.
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