A First Look at Longhorn by Wei-Meng Lee -- Longhorn is still in pre-beta, but we've got the goods on it. Wei-Meng Lee, author of Windows XP Unwired, gives you a guided tour through the new-generation operating system's interface and features.
Tuesday, June 22, 2004
Friday, June 18, 2004
can you work in a company. ?
Can one imagine working for the following company?
It has a little over 500 employees with the following statistics :
29 have been accused of spouse abuse.
7 have been arrested for fraud.
19 have more than three criminal cases pending against them .
117 have been charged and are being investigated for Murder, Rape, Assault, Extortion and Robbery.
71 cannot get credit or loans due to bad credit histories.
21 are current defendants on various lawsuits..
84 have been involved in offenses and have paid fines.
Can you guess what mighty Organization this is?
It has a little over 500 employees with the following statistics :
29 have been accused of spouse abuse.
7 have been arrested for fraud.
19 have more than three criminal cases pending against them .
117 have been charged and are being investigated for Murder, Rape, Assault, Extortion and Robbery.
71 cannot get credit or loans due to bad credit histories.
21 are current defendants on various lawsuits..
84 have been involved in offenses and have paid fines.
Can you guess what mighty Organization this is?
The technology behind Google's great results
As a Google user, you're familiar with the speed and accuracy of a Google search. How exactly does Google manage to find the right results for every query as quickly as it does? The heart of Google's search technology is PigeonRank™, a system for ranking web pages developed by Google founders Larry Page and Sergey Brin at Stanford University.
Building upon the breakthrough work of B. F. Skinner, Page and Brin reasoned that low cost pigeon clusters (PCs) could be used to compute the relative value of web pages faster than human editors or machine-based algorithms. And while Google has dozens of engineers working to improve every aspect of our service on a daily basis, PigeonRank continues to provide the basis for all of our web search tools.
Why Google's patented PigeonRank™ works so well
PigeonRank's success relies primarily on the superior trainability of the domestic pigeon (Columba livia) and its unique capacity to recognize objects regardless of spatial orientation. The common gray pigeon can easily distinguish among items displaying only the minutest differences, an ability that enables it to select relevant web sites from among thousands of similar pages.
By collecting flocks of pigeons in dense clusters, Google is able to process search queries at speeds superior to traditional search engines, which typically rely on birds of prey, brooding hens or slow-moving waterfowl to do their relevance rankings.
When a search query is submitted to Google, it is routed to a data coop where monitors flash result pages at blazing speeds. When a relevant result is observed by one of the pigeons in the cluster, it strikes a rubber-coated steel bar with its beak, which assigns the page a PigeonRank value of one. For each peck, the PigeonRank increases. Those pages receiving the most pecks, are returned at the top of the user's results page with the other results displayed in pecking order.
Integrity
Google's pigeon-driven methods make tampering with our results extremely difficult. While some unscrupulous websites have tried to boost their ranking by including images on their pages of bread crumbs, bird seed and parrots posing seductively in resplendent plumage, Google's PigeonRank technology cannot be deceived by these techniques. A Google search is an easy, honest and objective way to find high-quality websites with information relevant to your search.
Building upon the breakthrough work of B. F. Skinner, Page and Brin reasoned that low cost pigeon clusters (PCs) could be used to compute the relative value of web pages faster than human editors or machine-based algorithms. And while Google has dozens of engineers working to improve every aspect of our service on a daily basis, PigeonRank continues to provide the basis for all of our web search tools.
Why Google's patented PigeonRank™ works so well
PigeonRank's success relies primarily on the superior trainability of the domestic pigeon (Columba livia) and its unique capacity to recognize objects regardless of spatial orientation. The common gray pigeon can easily distinguish among items displaying only the minutest differences, an ability that enables it to select relevant web sites from among thousands of similar pages.
By collecting flocks of pigeons in dense clusters, Google is able to process search queries at speeds superior to traditional search engines, which typically rely on birds of prey, brooding hens or slow-moving waterfowl to do their relevance rankings.
When a search query is submitted to Google, it is routed to a data coop where monitors flash result pages at blazing speeds. When a relevant result is observed by one of the pigeons in the cluster, it strikes a rubber-coated steel bar with its beak, which assigns the page a PigeonRank value of one. For each peck, the PigeonRank increases. Those pages receiving the most pecks, are returned at the top of the user's results page with the other results displayed in pecking order.
Integrity
Google's pigeon-driven methods make tampering with our results extremely difficult. While some unscrupulous websites have tried to boost their ranking by including images on their pages of bread crumbs, bird seed and parrots posing seductively in resplendent plumage, Google's PigeonRank technology cannot be deceived by these techniques. A Google search is an easy, honest and objective way to find high-quality websites with information relevant to your search.
Thursday, June 17, 2004
Will Windows work continuously for more than 49.7 days?
Will Windows work continuously for more than 49.7 days?
Here is a bit of information, which may surprise you all.
Windows crashes automatically if you don't switch off the machine for 49.7Days.
Microsoft accepts this!!
Do you know why?
In Windows the Virtual Machine Manager (here after referred as
VMM) is responsible for creation, execution, monitoring and termination of virtual machines. This VMM, which is a 32 bit, protected mode operating system entity, provides a number of system services at chip level. One of these services
is "Get_System_Time".
This particular service loads the EAX register with the time in milliseconds
since Windows started on that machine. This service is accurate to 1 ms.
EAX is a 32 bit register in Intel 386 Processor onwards.
So the maximum number of milliseconds it can hold is
(2^32)-1 = 4294967295
Milliseconds = 4294967.295
Seconds = 71582.79
Minutes = 1193
Hours = 49.7 days
So after 49.7 days the EAX resets to zero. Most of the Drivers use this Time
Service to keep track of the Timeout of various Services they provide.
So after 49.7days the drivers cannot use the get_System_Time function of VMM
and they crash taking the OS along.
Here is a bit of information, which may surprise you all.
Windows crashes automatically if you don't switch off the machine for 49.7Days.
Microsoft accepts this!!
Do you know why?
In Windows the Virtual Machine Manager (here after referred as
VMM) is responsible for creation, execution, monitoring and termination of virtual machines. This VMM, which is a 32 bit, protected mode operating system entity, provides a number of system services at chip level. One of these services
is "Get_System_Time".
This particular service loads the EAX register with the time in milliseconds
since Windows started on that machine. This service is accurate to 1 ms.
EAX is a 32 bit register in Intel 386 Processor onwards.
So the maximum number of milliseconds it can hold is
(2^32)-1 = 4294967295
Milliseconds = 4294967.295
Seconds = 71582.79
Minutes = 1193
Hours = 49.7 days
So after 49.7 days the EAX resets to zero. Most of the Drivers use this Time
Service to keep track of the Timeout of various Services they provide.
So after 49.7days the drivers cannot use the get_System_Time function of VMM
and they crash taking the OS along.
Wednesday, June 16, 2004
400GB hard drive makes Hitachi the capacity king
Wed Mar 10 00:05:00 MST 2004
New Hitachi drive offers record capacity for audio/video and nearline storage applications
SAN JOSE, Calif., March 10, 2004 – Hitachi Global Storage Technologies (Hitachi GST) today announced the world’s highest capacity 3.5-inch ATA hard drive, the 400GB Deskstar 7K400. The new drive has been designed for audio video (AV) and ATA nearline environments, where large capacities and a lower per-gigabyte cost are key requirements. A new industry-standard AV feature set makes the drive well-suited for use in high-end digital video recorders (DVRs) that are designed to record substantial amounts of high-quality digital programming.
“Extremely high capacity disk drives are more essential now than ever with digital video recording coming into the mainstream,” said Jose Antelo, general manager, 3.5-inch Consumer and Commercial HDDs, Hitachi Global Storage Technologies. “We are now in a position to extend our consumer electronics portfolio to include the high-end device segments, most notably the nascent market for high-capacity DVRs.”
Audio/Video Applications
Hitachi has designed the Deskstar 7K400 to address the growing demand for high-capacity DVRs. The drive is the first to include a new industry-standard AV feature, known as Streaming Command Set. The AV feature is designed to enhance streaming functionality in digital video applications. Streaming Command Set integration optimizes the drives for storing and retrieving digital video content on a DVR. Hard drives are key to enabling technology that will drive future growth of the DVR market.
Yankee Group, a Boston-based research and consulting firm, predicts that DVRs will be found in approximately 24.7 million homes by the year 2007. High definition television (HDTV) broadcasts are among the many factors that are driving the need for additional DVR storage capacity. 8.7GB of storage is required for each hour of broadcast HDTV recording. In addition to its substantial capacity, the Deskstar 7K400’s 7,200 rpm performance is also well-suited to meet the rigorous demands of HDTV recording.
The Deskstar 7K400 provides enough capacity to store the following:
400 hours of standard TV programming
45 hours of HDTV programming
More than 6,500 hours of high quality digital music
ATA Nearline Applications
The Deskstar 7K400 is ideally suited for nearline storage and other low I/O applications. The drives provide superior capacity, data access times and transfer rates at a comparable cost to that of tape or optical solutions. The new drives will ship with Parallel ATA and Serial ATA (SATA) interfaces.
SATA is a scalable interface technology that currently delivers a maximum data transfer rate of up to 1.5 Gb/s. SATA also simplifies device configuration, improves data integrity and offers “hot-plug” capability, which allows the drives to be installed or removed while the host system is operational. SATA drives also use a compact cabling structure and smaller connectors that are designed to enhance air flow and reduce system complexity.
Several Deskstar 7K400 design attributes combine to protect customer data and increase capacity, while maintaining Hitachi’s award-winning performance. Among these features are a new anti-rebound actuator latch and Rotational Vibration Safeguard technology (RVS). The RVS technology is used to ensure drive performance in high rotational vibration environments, where there are multiple drives in a single enclosure. The Deskstar 7K400 also features a spindle motor that is used in enterprise-class hard drives.
The Deskstar 7K400 is backed by Hitachi’s renowned compatibility testing labs and worldwide distribution support. The drive has an 8MB-buffer and carries a three-year warranty.
Hitachi is currently shipping Deskstar 7K400 drives in limited quantities.
TECHNICAL SPECIFICATIONS:
Deskstar 7K400
400 GB (GB = 1 billion bytes, accessible capacity may be less)
757 Mb/s max. media data rate
8.5 ms average seek time
7,200 RPM, 4.17 ms average latency
ATA-100/Serial ATA 1.5 Gb/s
25.4 mm in height
61.7 billion bits per square inch maximum areal density
5 aluminum platters
10 GMR recording heads
225 G (2ms) non-operating shock
9.0 watt idle power (Parallel ATA)
9.6 watt idle power (Serial ATA)
3.1 Bels typical idle acoustics
Fluid Dynamic Bearing (FDB) spindle motor
New Hitachi drive offers record capacity for audio/video and nearline storage applications
SAN JOSE, Calif., March 10, 2004 – Hitachi Global Storage Technologies (Hitachi GST) today announced the world’s highest capacity 3.5-inch ATA hard drive, the 400GB Deskstar 7K400. The new drive has been designed for audio video (AV) and ATA nearline environments, where large capacities and a lower per-gigabyte cost are key requirements. A new industry-standard AV feature set makes the drive well-suited for use in high-end digital video recorders (DVRs) that are designed to record substantial amounts of high-quality digital programming.
“Extremely high capacity disk drives are more essential now than ever with digital video recording coming into the mainstream,” said Jose Antelo, general manager, 3.5-inch Consumer and Commercial HDDs, Hitachi Global Storage Technologies. “We are now in a position to extend our consumer electronics portfolio to include the high-end device segments, most notably the nascent market for high-capacity DVRs.”
Audio/Video Applications
Hitachi has designed the Deskstar 7K400 to address the growing demand for high-capacity DVRs. The drive is the first to include a new industry-standard AV feature, known as Streaming Command Set. The AV feature is designed to enhance streaming functionality in digital video applications. Streaming Command Set integration optimizes the drives for storing and retrieving digital video content on a DVR. Hard drives are key to enabling technology that will drive future growth of the DVR market.
Yankee Group, a Boston-based research and consulting firm, predicts that DVRs will be found in approximately 24.7 million homes by the year 2007. High definition television (HDTV) broadcasts are among the many factors that are driving the need for additional DVR storage capacity. 8.7GB of storage is required for each hour of broadcast HDTV recording. In addition to its substantial capacity, the Deskstar 7K400’s 7,200 rpm performance is also well-suited to meet the rigorous demands of HDTV recording.
The Deskstar 7K400 provides enough capacity to store the following:
400 hours of standard TV programming
45 hours of HDTV programming
More than 6,500 hours of high quality digital music
ATA Nearline Applications
The Deskstar 7K400 is ideally suited for nearline storage and other low I/O applications. The drives provide superior capacity, data access times and transfer rates at a comparable cost to that of tape or optical solutions. The new drives will ship with Parallel ATA and Serial ATA (SATA) interfaces.
SATA is a scalable interface technology that currently delivers a maximum data transfer rate of up to 1.5 Gb/s. SATA also simplifies device configuration, improves data integrity and offers “hot-plug” capability, which allows the drives to be installed or removed while the host system is operational. SATA drives also use a compact cabling structure and smaller connectors that are designed to enhance air flow and reduce system complexity.
Several Deskstar 7K400 design attributes combine to protect customer data and increase capacity, while maintaining Hitachi’s award-winning performance. Among these features are a new anti-rebound actuator latch and Rotational Vibration Safeguard technology (RVS). The RVS technology is used to ensure drive performance in high rotational vibration environments, where there are multiple drives in a single enclosure. The Deskstar 7K400 also features a spindle motor that is used in enterprise-class hard drives.
The Deskstar 7K400 is backed by Hitachi’s renowned compatibility testing labs and worldwide distribution support. The drive has an 8MB-buffer and carries a three-year warranty.
Hitachi is currently shipping Deskstar 7K400 drives in limited quantities.
TECHNICAL SPECIFICATIONS:
Deskstar 7K400
400 GB (GB = 1 billion bytes, accessible capacity may be less)
757 Mb/s max. media data rate
8.5 ms average seek time
7,200 RPM, 4.17 ms average latency
ATA-100/Serial ATA 1.5 Gb/s
25.4 mm in height
61.7 billion bits per square inch maximum areal density
5 aluminum platters
10 GMR recording heads
225 G (2ms) non-operating shock
9.0 watt idle power (Parallel ATA)
9.6 watt idle power (Serial ATA)
3.1 Bels typical idle acoustics
Fluid Dynamic Bearing (FDB) spindle motor
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