Tuesday, May 17, 2005
Tuesday, April 12, 2005
Determine USB Power Load
Determine USB Power Load: "Do your PC's USB ports supply enough electricity to power all the devices you have attached to them? Plugging too much gear into a bus-powered USB hub (one with no external power adapter) can overwhelm a USB port by demanding more than the 500 mA it can supply.
Check the power demands on any USB port in Windows XP by
right-clicking My Computer and choosing Properties,
Hardware,
Device Manager.
Double-click Universal Serial Bus controllers,
double-click the USB Root Hub entry,
choose the Power tab, and add up the amounts in the 'Power Required' column."
Check the power demands on any USB port in Windows XP by
right-clicking My Computer and choosing Properties,
Hardware,
Device Manager.
Double-click Universal Serial Bus controllers,
double-click the USB Root Hub entry,
choose the Power tab, and add up the amounts in the 'Power Required' column."
Tuesday, April 05, 2005
How to Prevent Users from Using USB Storage Devices
USB flash memory drives are handy, but they can also be used to upload malicious code to your computer or to copy confidential information from your computer and take it away. You can disable the use of USB storage devices. Here's how:
Repeat the above steps for the file named Usbstor.inf.
Now the user(s) you selected will not be able to install USB storage devices to the computer.
If one is already installed, you'll need to edit the registry to prevent USB devices from working.
- In Windows Explorer, navigate to the systemroot folder (usually named WINDOWS) and then to the Inf folder.
- In the Inf folder, right click the file named Usbstor.pnf and select Properties.
- Click the Security tab.
- Find the name of the user you want to prevent from using USB storage devices in the list labeled Group Or User Names.
- In the Permissions list, check the Deny checkbox next to Full Control.
- Click OK.
Repeat the above steps for the file named Usbstor.inf.
Now the user(s) you selected will not be able to install USB storage devices to the computer.
If one is already installed, you'll need to edit the registry to prevent USB devices from working.
- In your registry editor, navigate to:
HKEY LOCAL MACHINE\SYSTEM\CurrentControlSet\Services\UsbStor - In the right pane, double click the item labeled Start and in the Value Data field, enter 4 (make sure Hexadecimal is selected as the data type).
- Click OK and close the registry editor.
Monday, March 21, 2005
Black Hole
Some boffin reckons to have created a black hole.
Sky News : Don't Panic! Black Hole Made On Earth
So it absorbed the jets of particles and then evaporated all within 10 million billion billionths of a second (1/10,000,000,000,000,000,000,000,000 th Seconds 1x10-25 s). I'd like to see the camera that detected that.
Sky News : Don't Panic! Black Hole Made On Earth
So it absorbed the jets of particles and then evaporated all within 10 million billion billionths of a second (1/10,000,000,000,000,000,000,000,000 th Seconds 1x10-25 s). I'd like to see the camera that detected that.
Friday, March 18, 2005
The Einstein@Home Starsphere Screensaver
Like SETI@Home but for something that is actually of scientific use and likely to happen, The Einstein@Home Starsphere Screensaver has a number of elements related to current efforts to detect gravitational radiation from periodic sources such as pulsars.
The primary element of the screensaver is a rotating celestial sphere showing the known constellations, along with the current zenith positions of three gravity wave detectors. Also shown are the positions of the known pulsars and supernovae remnants, and a marker indicating the positions being searched as the calculations proceed. When the graphics are shown in a separate window (not as a screensaver) the user can control the display with the mouse and keyboard.
When the graphics are displayed in a separate graphics window (rather than as a screensaver) you can control the display with the mouse and keyboard. To zoom in or out or rotate the starsphere hold down the appropriate mouse button and move the mouse up and down or left and right.
The primary element of the screensaver is a rotating celestial sphere showing the known constellations, along with the current zenith positions of three gravity wave detectors. Also shown are the positions of the known pulsars and supernovae remnants, and a marker indicating the positions being searched as the calculations proceed. When the graphics are shown in a separate window (not as a screensaver) the user can control the display with the mouse and keyboard.
When the graphics are displayed in a separate graphics window (rather than as a screensaver) you can control the display with the mouse and keyboard. To zoom in or out or rotate the starsphere hold down the appropriate mouse button and move the mouse up and down or left and right.
Thursday, March 17, 2005
XBOX Uber Gaming
Why do Microsoft give the XBox the capability to do 5.1 surround sound and then not advertise the fact or provide a cable to let you do it? Well, until recently anyway. Earlier this month they gave offical sanction to this little number from Spherex but it costs $500 and is't available in the UK... yet
Some of the bits you need to do it yourself for an awesome increase in graphics quality and sound are:
This Joytech Xbox Digital AV Cable
A Decoder with an optical input like this one from Creative
Decoder DDTS-100 - Dolby Digital EX, DTS-ES, Pro Logic II & DTS Neo:6
And some 5.1 speakers like these
There are other systems available but "without optical input, you cannot enjoy aural features like Dolby Digital 5.1 Surround Sound. Instead, you'll be treated to simulated surround sound through a circular-surround algorithm."
Oh yeah, and some games that actually produce 5.1 output like Halo 2 or just about any DVD.
Some of the bits you need to do it yourself for an awesome increase in graphics quality and sound are:
This Joytech Xbox Digital AV Cable
A Decoder with an optical input like this one from Creative
Decoder DDTS-100 - Dolby Digital EX, DTS-ES, Pro Logic II & DTS Neo:6
And some 5.1 speakers like these
There are other systems available but "without optical input, you cannot enjoy aural features like Dolby Digital 5.1 Surround Sound. Instead, you'll be treated to simulated surround sound through a circular-surround algorithm."
Oh yeah, and some games that actually produce 5.1 output like Halo 2 or just about any DVD.
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