Archive for the ‘Technology’ Category

Free tool to scan WiFi network in your area, and find odd ones

June 17th, 2020 No comments

Once when I was teaching at an Engineering College, scanned Wi Fi on my laptop to show students about its range and signal strength. I got an odd AP at the bottom. Wished long to identify the funny AP at the bottom.

Here is the solution. WifiInfoView scans the wireless networks in your area and displays extensive information about them, including: Network Name (SSID), MAC Address, PHY Type (802.11g or 802.11n), RSSI, Signal Quality, Frequency, Channel Number, Maximum Speed, Company Name, Router Model and Router Name (Only for routers that provides this information), and more…
Download WifiInfoView here

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Free online certification course in Programming, Data Structures and Algorithms by NPTEL (National Programme on Technology Enhanced Learning)

March 5th, 2014 1 comment


If any of you have a distant dream of learning Programming, Data structures and Algorithms from the experts at IITs, here comes an excellent opportunity.

Online course: Free for all, Certification exam: For a nominal fee

“This is a course on programming, data structures and algorithms. The learner is assumed to have no prior experience of programming, but is expected to be at the level of a second year undergraduate college student in science or engineering. The course will run over ten weeks with about 2-3 hours of lectures per week.

At the end of each week, the learner is expected to write some programs and submit them for grading. These programming problems are classified as easy, moderate or difficult. The easy problems, typically, are repeats from the lecture. The moderate and difficult ones will require increasing levels of initiative from the learner. 
In addition, at the end of each week the learner is expected to answer a set of objective-type assessment questions. “ source: 

Register here


List of Topics
  • Introduction to Computers and Programming
  • Writing your first program
  • Variables and operators and expressions
  • Variable declarations, more operators, precedence
  • Input, Output Statements
  • Conditionals
  • Loops
  • Arrays and Multidimensional arrays
  • Pointers
  • Functions
  • Running time of a program
  • Computing time complexity
  • Polynomial evaluation and multiplication
  • Searching: Linear and Binary
  • Finding minimum and maximum
  • Sorting I: Insertion, Merge
  • Sorting II: Counting, Radix
  • Finding i-th smallest number
  • Structures and User-defined data types
  • Brief introduction to C++: Classes and objects
  • Data Structures: Abstract Data Type
  • Lists
  • Stacks: Last In First Out
  • Queues: First In First Out
  • Trees
  • Tree traversal
  • Heaps
  • Graphs and Representation
  • Greedy algorithms
  • Dynamic programming
  • Matrix Chain Multiplication
  • Dijkstra’s Algorithm
  • Strings
  • Boyer-Moore String Matching Algorithm
  • File I/O
  • Modular Programming

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Hamfest India 2011 on December 10, 11 at Cochin, Kerala

July 28th, 2011 2 comments

Here is a wonderful opportunity for budding Hams and SWL enthusiasts in India.
Hamfest India comes to Kerala again. It is scheduled to take place at Gokulam Park Convention Centre, Kaloor, Kochi (Cochin), Kerala on December 10 and 11, 2011.

20 years back it was started at Kuttikkanam, Kottayam, Kerala.
It’s a good opportunity to get updated about the recent advancements in amateur radio.

There’s in much in storehamfest2011

  • Antenna workshops and demos
  • Home brewers’ corner
  • Interesting Technical sessions
  • Surprise Gifts and Awards
  • Wide display of Radio equipment and accessories
    Don’t miss it !

For Registration

Indian Hams and SWLs

Early Bird Offer – (July 1 to 31) :Rs. 400/- per person (as per the updates, extended upto 15th August 2011)

After 31 July up to 5th December 2011 – Rs.500/- per person

On the spot registration – Rs. 1000/- per person

International Hams and SWLs

Euro: 20/- or US $ 25/-

Click here to Register Online

(Early Bid Offer is closed now)

For more information please visit Hamfest India 2011

Route Map

View Larger Map


Nearest railway station is “Ernakulam Town”. Kaloor bus station is also near to the venue.

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