Archive for May, 2010

For a while now, many of the leading institutes of the world have released all their courseware under and open license. Which means anyone can download them and use them.

OpenCourseWare Consortium has a list of all courseware and institutes that are participating.

Some of the well known institutes:

  • IIM Bangalore
  • MIT
  • UC Berkeley
  • And many more.

Happy Learning :)

Not sure, how many people already know or realise that most of the cellphones sold today are based on Open Source.

  • Android is the fastest growing Operating System for phones is based on Linux.
  • Nokia’s N900 platform runs Linux too.
  • Palm’s (now acquired by HP) WebOS is based on Linux too.
  • Symbian the most popular phone operating system is now Open Source.
  • iPhone is based on a BSD kernel which is also Open Source.

Is there still room for proprietary operating systems?


Buffalo Technology which makes good WiFi routers has decided to use open source firmware. Instead of their own firmware, they are going to be using DD-WRT instead.

DD-WRT is open source and has host of features, which are normally not found in WiFi Routers. DD-WRT also has open firmware for many other routers too. Her are some of the features:

  • VPN (PPTP, OpenVPN)
  • VLAN (tagging)
  • Virtual AP (multi-SSIDs for multi-connection and security)
  • RADIUS server
  • Hot spot support
  • Volume quotas
  • IPv6 support
  • Detailed monitoring and
  • A host of other high-end features

Way to go Buffalo! Hope to see more hardware vendors using open firmware.

Canon has released the 550D as an upgrade to 500D. It has inherited some of the features of their high end 7D while offering a cheaper alternative to 7D.

Key features:

  • 18 Megapixel! Will this megapixel race ever end?
  • ISO 100-6400 (Expansion to 12800) , similar to 500D
  • 1920X1080 Full HD Movie Recording
  • SDHX compatible
  • External microphone support 3.5mm stereo jack
  • Weight 530g

Limitations:

  • Fixed LCD
  • No in camera RAW conversion

Canon 7D Advantage over 550D

  • Faster burst speed 8fps vs 3.5fps (550D)
  • Weather proof sealing
  • Top LCD

If faster burst speed or weather proofing is not your requirements, 550D would work out better for you.