A recent business proposal required me to calculate the time taken to download huge files. Being a BSNL Dataone user, I was comparing it with various plans including the Home unlimited plan for Rs.900.

1 MB = 1024 KB = 1024 * 1024 bytes

= 1048576 bytes

= 1048576*8 = 8388608 bits

BSNL offers 256Kbps guaranteed speed with a maximum of 2Mbps. So you can theoretically download a 1Mb file in …well under 4 seconds. So that’s under ideal conditions. I have seen download progresses for my 256Kbps connections at the range of 200KB/s. A lot depends on the server’s bandwidth too.
So how much does a 1GB file take to download with a 1 Mbps connection ? From the above table, 8 seconds for 1MB = 8 *1024 for 1GB = 8192 seconds = 136.53 minutes = approximately 2 and a half hours..

Update as on 14-3-08
I’m getting a download speed of 312Kb/s on my home 500 plan which means the speeds are crossing the 2Mbps speeds.

These are tips that you might already be using but definitely there would be one thing or the other that you would not have known. As far as I’m concerned most of these are tips that I use almost daily . That much for the usability. Most of this stuff will work from Windows 95 through Windows NT-4,Windows 98,Windows 2000,Windows Millennium, Windows XP and Windows Vista.

Explorer, Start Menu Run and Keyboard Shortcut Tips

1. Press the Alt key  and look for the underlined characters( known as accelerators). You can activate menu’s or controls by pressing the accelerator key.In older versions of Windows it was not necessary to press the Alt Key for viewing the accelerator key underlines.
2. When you create or check the properties of a shortcut, you find the Start in option.This can help in changing the default open dialog in most old windows applications.
3. Start applications from Run.And there are 2 easy ways to reach Run
   i) Ctrl+Esc R
   ii) Win+R
   Common programs that I use through run
   cmd, calc, wordpad, mspaint, regedit, winword, excel, conf (Netmeeting)
   Tech Note:
   Its not case sensitive
   This works when an entry is added to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths\ key of registry
   Checkout the above key to know what all applications are available through Run
4. Type the following at the Run prompt to go to the corresponding Windows Special Folders
   Temp folder - %temp%
   User Profile Folder - %userprofile%
   Windows Folder     - %windir%

   Want to add more ? Just add an environment variable (Control panel - System - Advanced - Settings - New - Type whatever name you want for variable name and the type the full path in Variable Value and click OK.

5. Start Control Panel applets and MMC applets by typing it in Run. Some of my favourites are listed below
   
   

   Device Manager	devmgmt.msc
   Service Control Manager	services.msc
   Event Viewer	eventvwr.msc
   User Manger	lusrmgr.msc
   Internet Properties	inetcpl.cpl
   Disk management	diskmgmt.msc
   Firewall	firewall.cpl
   Add Remove Programs	appwiz.cpl
   Bluetooth Configuration	btcpl.cpl

   Want to find it all ? You can use WIN+F and search for *.cpl,*.msc in the windows folder.
   

6. Optimise your system for best Performance by (Control panel - System - Advanced - Settings in Performance) setting the option for Best performance
7. To delete files bypassing the Recycle Bin keep the shift key pressed during deletion process.
8. Shift-Close will close all folders, under a folder path, ie suppose you have C:\test, C:\test\dir1\ and c:\test\dir1\dir2 open as separate windows in explorer closing   c:\test\dir1\dir2  will close all the open windows, including C:\test, C:\test\dir1\
9. The most used explorer/windows app  keyboard shortcuts
   
   

   Cut	Ctrl-X or Shift-Delete
   Copy	Ctrl-C or Ctrl-Ins
   Paste	Ctrl-V or Shift-Insert
   Undo	Ctrl-Z
   Switch between open programs	ALT+TAB
   close Active Windows	Alt-F4
   Backspace	Go to up one level
   Find	F3 or Win-F
   Replace	Ctrl-H
   Explorer	Win-E
   Start menu	Ctrl-Esc or Win
   System Properties	Win+Break
   Copy Active Window to Clipboard	Alt-Prt SC (might need fn key for some laptops)
   Copy Full Screen To Clipboard	Prt SC (might need fn key for some laptops)

Windows key and context menu keys are your friend, Shift-F10 can be used instead of windows context men key and Ctrl-Esc can be used instead of windows key to activate Start Menu

Command Prompt

1. cmd or command (for win9x or ME) from Run. Go to DOS prompt easily
2. CMD here power toy helps to delete files faster. You can open a command prompt in a folder and give del. to delete all files or use a wild card like del *.tmp. The advantage of this method is that the deletion process does not stop with a file in use. this very handy for emptying the temp folder.
3. At the Run prompt typing cmd /k followed by a DOS command will not close the command box even after the command  is executed. eg cmd /k ping google.com
4. ping -t at command  prompt continues pinging till ctrl-c is pressed. Helpful while tracing network problems.
5. Find the IP address from computer name using the command nbtstat -A computername
6. Enable auto complete at DOS prompt using TweakUI and get file name completion at DOS prompt.

I don’t quite remember the source but these Vista shortcut can be handy

Win 0 - Dos prompt

I wanted to write more but this has been sitting as a draft in Windows Live Writer for long..

My idea was to write a complete review from my Treo, using Opera Mini. After writing couple of sentences or even more, I tried copying the content that I wrote to the clipboard using FieldPlus’ Shift- Enter keyboard shortcut. Oh! what a bad decision that was, everything went off and I was with a blank screen. Looks like since Opera Mini run’s on top off Java VM, it has problems with the standard Palm OS keys and perhaps it will have problems with any mobile OS.

I was using Treo’s Blazer browser for quite some time. That used to work for most of the sites, but failed miserably on Google adsense login.  It could be due to the time taken for the AJAX interface to load on my slow GPRS connection, I don’t know for sure. I had tried Opera Mini earlier and it was crashing, required too much RAM and was not all like my Opera on desktop. I was a bit apprehensive in trying out stuff, but I had time and installed IBM Java VM. The download is free from palmone’s site and is a prerequisite in running Opera. On installation on the VM (version J9 2.2.14 ARM 20070207_1505_IHsCmV), you can adjust the settings from the Preferences applet. Also a MIDlet manager appears among the list of applications. Next was the Opera Mini installation which went fine. No glitches what so ever. The Opera about ( taken from Menu -> Tools -> Help -> About ) show the version number as 4.0.9800 20071113(should be the build date). I’m a fan of having the build date on the version information, I usually do that and it can really tell the age of the software.

Features Overview

• Fast, yes its really fast, the VM clumsiness is overcome by the proxy I guess. Opera does not render the site directly. It uses a proxy server cluster for doing the rendering and then transferring the data to a format supported by Opera Mini. On researching I’ve found that the rendering is done using an ultra compact binary language (OBML) that reduces the page size by 90% and the result is sent to the mobile phone.
• Shortcut key support, could be very useful for mobile devices without QWERTY keyboard.
• Speed dials feature is akin to the desktop opera. In Opera Mini you enter * followed by a digit from 0 to 9 to open the set speed dial web page.
• Context menu is available on keeping the stylus pressed, with options for enabling and disabling mobile view, reloading and Information.
• Fetch title and icon feature is a cute feature, that’s available for speed dials and Search links. It lets you retrieve the icon and page title and that’s reflected in the UI of the bookmarks of speed dial lists.
• Opera defaults to yahoo search, but like its desktop counterpart you can add any search provider like Google. Management of the search providers is relatively easy.
• Feed support is native within the browser, you don’t need any feed reader. BBC News,Sport, Guardian, Opera Community News and Opera Mini Blog are the default additions.You have the option to view by feed or view by time which sorts by Feed name and most recent feed entry respectively.
• Opera Browser sync is touted to sync between opera desktop bookmarks but I have not tested it.
• Its 100% FREE.
• Know the transferred bytes for a session or total from the about screen. Looks like its not retained during a soft reset.

The default keyboard shortcuts for Opera Mini is given below

#1	Enter Web Address
#2	Bookmarks
#3	Goto top/bottom/text start
#4	Start Page
#5	History
#6	Page Information
#7	Add Bookmark
#8	Settings
#9	Search
#0	Reload
##	Forward
*0 to *9	Speed dial
*0	Feeds
**	Change Window Size

Limitations

• Cannot use the OS default key functionality, limited by the JVM. Keys like the context menu key not working is really irritating.
• When there’s an Internet connect request, it pops up the OS’s dial-up screen which states To complete the request you must connect to the Internet. Connect now ? This does not appear correctly, its visible only partly on the screen and would be confusing a new user.Even the service connection progress window goes outside the screen. Its probably another JVM  issue or due to the memory preference setting. Update: On increasing the JVM memory  and
• Much stable than the previous version of Opera Mini, but still crashes,  with a soft reset being the only solution.
• No password remembering options, well that’s not there even in Blazer
• Feed management and Bookmark management UI lacks the option of deleting multiple entries at a time and I don’t know why it shows ‘connecting…’ to delete an entry.
• Asking each time whether Opera Mini has to connect and use airtime is another minor irritant.

Blazer comparison

On the Treo 650, the default browser is Blazer. It was good enough but its far behind in comparison to Blazer. The UI of Blazer is more Palmy and can get the Palm user feel at home. Opera Mini 4 is really different.

Features missing in Opera Mini when compared to Blazer

1. Cannot copy the web address to clipboard or paste it to address bar from clip board. You cannot send a link as SMS or email easily.
2. No tool bar buttons, for a device with stylus, its much easier to click a button than to press a shortcut key. Screen estate is actually wasted for displaying time. Yes there’s one option ‘back’ in the status bar and there’s enough and more space to add buttons for basic stuff like refresh,homepage,bookmarks, next and signal strength .
3. Blazer allows to connect via VPN but I couldn’t find a similar option in Opera.
4. No option to view passwords while entering, it’s very much there in Blazer
5. No address bar.
6. No auto complete of previous site addresses.
7. No way to disable cookies or JavaScript.
8. Tap and drag - Blazer has an option to select between text selection and scrolling.
9. Not that its needed with the proxy, but option to disable CSS is present in Blazer.
10. Selection of a  custom proxy is  set from the IBM Java VM preferences. Not very intuitive.
11. Option to clear Cookies and cache on exit is not present in Opera.
12. No option to get back to previous page once you exit Opera Mini.

The proxy at http://server4.operamini.com:80 is what makes Opera Mini fast. You can find whether the proxy address is the same from the the About screen of Opera Mini. Out of curiosity I set this as the proxy server for my Internet host and I got a message stating that its’ plugin content. So this proxy can’t be used for your normal browser on a slow connection. Another thing that I tested was trying opera:config,opera:about. opera:help etc in the address bar. It resulted in an invalid address except for opera:about, which showed Version 10.00, Build 217, Platform Pike v 7.6 release 92 and long list of 3rd party copyrights and miscellaneous info. Its probably the server cluster version number and information.

Conclusion

Overall I like Opera Mini as much as Opera on my desktop I’ve started using it as my primary browser on my Treo and yes to to check my adsense revenue..
Even with its quirks with clipboard and without auto completion. The speed compensates for most of its limitations and then I believe Opera will definitely come out with a more feature complete product soon. I wanted to put some screen shots but couldn’t get PDA Reach working.

I have a HP dv6395 laptop (should be applicable to the whole HP dv6000 series)  and it comes with a remote. Once in a while it just stops working. The ultimate problem solving technique of resatrting windows doesn’t solve  this problem. Usually whenever there’s a problem with any IR remote, I use the digital camera technique to ensure that the IR light actually comes from the remote. In this case the RC was actually woking and I couldn’t find anything else wrong. The related services were working, but none of the functions were actually executed by the OS. Powering off and removing the power supply too didn’t work.

Finally I had this logical intuition, where I thought that since the remote can power on the laptop even if its powered off, unless I remove the battery the IR sesning circuit will not be reset. That worked, removing the battery and then inserting it back restored the IR functionality.

After  months of wait .. my wife delivered a baby girl on November 29th and I’ve become a father.

I was tensed and curious. Tensed because of the unexpected trip to the hospital due to fluid leakage and because she had chicken pox during pregnancy. Curious to know whether our new born would be a boy or girl.

Got extremely busy for many days and couldn’t blog for quite some time…

Here are some photos of our new family member.

Feeling so sleepy… 

Deep but calm sleep..

Thoughtful….