Jeff Han is a research scientist for New York University’s Courant Institute of Mathematical Sciences. Here, he demonstrates – for the first time publicly – his intuitive, “interface-free,” touch-driven computer screen, which can be manipulated intuitively with the fingertips, and responds to varying levels of pressure.
Category: Technology
Cool things in technology.
Bell Star Codes
I rarely use these anymore now days, but every now and again it’s good to block a caller.
| Code | Description |
|---|---|
| *02 | DeActivate *66 Notification on Busy Signal |
| *03 | DeActivate *66 Notification (One Time Only) |
| *12 | Call Assitance (Police) |
| *30 | Cancel Forwarding |
| *31 | Automatic Forwarding |
| *32 | Notify |
| *40 | Change forward-to number for customer programmable call forwarding busy-line |
| *41 | Six-way conference calling activation |
| *42 | Change forward-to number for customer programmable call forwarding don’t answer |
| *43 | Drop last member of six-way conference call |
| *46 | French voice activated network control |
| *47 | Override feature authorization |
| *48 | Override do not disturb |
| *49 | Disable long distance special ring |
| *51 | Intercom Ring I |
| *52 | Intercom Ring II |
| *53 | Intercom Ring III |
| *54 | Extension Hold |
| *57 | Call Trace |
| *60 | Call Screen (Selective Call Rejection) |
| *61 | Selective Distinct Alert |
| *62 | Selective Call Acceptance |
| *63 | Selective Call Forwarding |
| *65 | ICLID Activation |
| *66 | Busy Call Return |
| *67 | Call Display Block |
| *68 | Computer Access restriction |
| *69 | Last Call Return |
| *70 | Call Waiting Disable (Per Call) |
| *71 | Three-way calling (Per Call) |
| *72 | Activate Call Forwarding |
| *73 | DeActivate Call Forwarding |
| *74 | Speed Dialling (8 numbers) |
| *75 | Speed Dialling (30 numbers) |
| *77 | Anonymous Call Rejection |
| *80 | Call Screen Disable |
| *81 | Selective Distinct Disable |
| *82 | Selective Acceptance Disable |
| *83 | Selective Forwarding Disable |
| *85 | ICLID Disable |
| *86 | DeActivate Busy Call Return |
| *87 | Cancel Anonymous Call Rejection |
| *89 | DeActivate Last Call Return |
| *90 | Re-Activate Call Forwarding Busy |
| *91 | De-Activate Call Forwarding Busy |
| *92 | Re-Activate Forwarding No Answer |
| *93 | Call Forwarding No Answer (*91,*93 to completely disable) |
| *94 | Ring Control (Call Answer) |
| *95 | Message Monitor (Call Answer [link|flash] to interuppt/talk) |
| *97 | Check if you have messages, remotely (on=2 beeps, off=4beeps) |
| *98 | Call Answer |
[via: yashy.com]
DOS Help and Commands
One of the best sites (I think) for MS-DOS help is: http://www.computerhope.com/msdos.htm
The site gives you a complete overview of MS-DOS and it’s commands.
Some of the DOS commands I seem to use the most are:
- chkdsk (Example: chkdsk /f /r)
A utility that checks the computer’s hard disk drives’ status for any cross-linked or any additionaly errors with the hard disk drive. - ipconfig (Example: ipconfig/renew)
A utility that displays the network settings currently assigned and given by a network. - ftp (Example: ftp > open > domain.com > username > password > bye)
File Transfer Protocol. - ping (Example: ping www.google.com)
A utility that helps in determining issues with networks and assists in resolving them.
DOS Paths
DOS requires you to put a path in quotes if it contains spaces.
Example
If you try to run: C:\Documents and Settings\user\My Documents\foo.exe
You receive the error: C:\Documents is not recognized as an internal or external command, operable program or batch file.
However, if you try to run: “C:\Documents and Settings\user\My Documents\foo.exe”
It will work fine. This also applies to many other command line based applications.
Sepia Tone Images with Photoshop
It’s rather rare that I need to apply a sepia tone to any image, but every now and then I do have to. Many digital cameras offer this effect, but not always. So in the rare chance that you do need to create a sepia tone on an RGB image, here’s how to do it with Photoshop.
- Open the image in Photoshop.
- If the image is in color, go to Image > Adjust > Desaturate and skipt to step 4.
- If the image is in grayscale, go to Image > Mode > RGB Color.
- Go to Image > Adjust > Variations.
- Move the Fine <--> Course slider down one notch less than the middle.
- Click on More Yellow once.
- Click on More Red once.
- Click OK.
Tips:
- Use the Save… button in the Variations dialog to save the sepia tone settings. The next time time you want to use it, just load the saved settings.
- Use Desaturate and experiment with Variations to apply ohter color tints to your photos.