Lies my Calculator and Computer told me

A wide variety of pocket-size calculating devices are currently marketed. Some can
run programs prepared by the user; some have pre-programmed packages for frequently
used calculus procedures, including the display of graphs. All have certain
limitations in common: a limited range of magnitude (usually less than for calculators)
and a bound on accuracy (typically eight to thirteen digits).

A calculator usually comes with an owner’s manual. Read it! The manual will tell
you about further limitations (for example, for angles when entering trigonometric
functions) and perhaps how to overcome them.

Program packages for microcomputers (even the most fundamental ones, which
realize arithmetical operations and elementary functions) often suffer from hidden
flaws. You will be made aware of some of them in the following examples, and you
are encouraged to experiment using the ideas presented here.

Lies my calculator and computer told me (PDF file 0.4mb)

Easy to use Software (Zero Configuration)

1.Hamachi

With Hamachi you can organize two or more computers with an Internet connection into their own virtual network for direct secure communication.
Hamachi is fast, secure and simple. Use for gaming, VNC, etc. It is also free.

Other links:

Hamachi on Linux

2.Ruby On Rails

Database web development framework that will amaze even the skeptics. Little configuration, create fully function web application in minutes because they emphasize convention rather than configuration. Cost = Free!

Other links:
Rails tutorials


3. Eclipse IDE

Simple to use open source IDE for java and other programming languages. Lots of available plugins. Compiles your code as you type. Cost is free.






4. Skype

Skype is a little program for making free calls within the US and Canada to all phones until the end of 2006. Skype to Skype calls anywhere in the world are also free. It's easy to download and use, and works with most computers.