The eight computer and technology stocks I am profiling today had differing reactions to their earnings reports, but all have buy ratings according to ValuEngine and are undervalued.

FORBES: Eight Tech Stocks To Buy And Trade

The Rosetta purchase gave Merck expertise in figuring out exactly which genes the body is reading--a technology called gene-expression profiling.

FORBES: Is There A Fat Gene?

"A combination of technology, intelligence and passenger profiling will help build a more robust defense against the unpredictable and changing nature of the terrorist threat to aviation, " BAA, which runs Britain's largest airport, announced in a statement.

CNN: UK to tighten airport security after failed bombing