Archive for the ‘notes’ Category

Buy used car in USA

August 14, 2017 Leave a comment

Step 1: Research car brand with different sites

Step 2:Identify option to buy
1. Rent from local people
2. Lease from dealer
3. Buy used car
4. Buy new car

Step 3: Sites to buy cars

Step 4: Estimate car repairs

Step 5: Car inspection

Step 6: Never pay cash. Do bank transfer or check

Step 7: Car VIN number history

Step 8: Lemon check

Many people are selling used cars when they give troubles or without maintenance.
Difficult to buy used car without proper service history.
Don’t buy cars who driven > 12000 miles per year
Don’t buy fleet cars, salvaged cars, cars with accidents,…etc

Categories: notes

LAN Instant Messenger

December 31, 2012 Leave a comment


Better for office IM use, when total number of people are less in network.

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Image Processing in day to day life

March 22, 2011 Leave a comment

What scanner (Flatbed scanner or Portable Scanner) is good?

Tried portable scanner and it is not useful much.
It is rolling credit card receipts and after couple of times we are seeing black scratches on images.
It is difficult to clean scanner frequently.
Conclusion: Image quality is good with flatbed scanner with compare to portable scanner.
Flatbed scanners are cheaper than portable scanners.

What software is good with scanner?
Generally each scanner seller provides basic software to scan images. That is good enough.
We need not to spend money on any other products.

If you lost software which comes with scanner,
try this http://TBD (To be documented)

What software is good to view and do simple tasks?
Xnview is good to view all pictures.
We can do auto crop, water marking, resizing, image conversion and many.

How to scan all receipts / photos quickly and cut them as single pics?
How to divide pictures in single scan?

Step 1: Scan all receipts / photos using scanner with its default software.
Keep as many as possible on glass and scan them.
Avoid overlapping.

Step 2: Use GIMP to multi crop and deskew the pictures

Download and install GIMP from
Unzip and copy deskew.exe to \GIMP-2.0\lib\gimp\2.0\plug-ins
Copy this script to \GIMP-2.0\share\gimp\2.0\scripts

Filters==>Batch Tools==>Batch Divide



You can see divided images in target folder.

Other tools / Notes:
This tool is easy to crop manually many pictures at once.

Other Nice Documentation on same topic:



February 9, 2011 Leave a comment


Cant import project {0} from an existing workspace folder

Remove .classpath, .project, .settings and all eclipse related files.


Access restriction: The type JAXBContext is not accessible due to restriction on required library

Use Java 1.5 instead of Java 1.6


joda time:


Scalable System Design Patterns


High Availability and Scalability Systems

Regular Events:
Indian Railways
– Reservation
– Enquairy
– Late running trains
– Freight booking


– Trading (Buying / Selling)
– Enquiry

Credit Score
– By Banks
– By Rental Agencies
– Other institutions

Single Day Events:
Super Bowl
World Cup

Seasional Events:
New Year Day
Independency Day parades


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