Testing is consider to be distructive process, rather than development which is a constructive process.Around 50% testing done in the world are purely Manual-BlackBox testing.BlackBox as it says, is a testing which include testing of functionality and not on internal codes or loop.The main aresa are GUI checks, functionality and Validation and little bit of Database testing.Whereas embedded testing is done on embedded system or chips, Take an example of a company which work on embedded system, HASBRO. they create many ICs for Toys, testing this is based on inputs it receive.