Earnings at Synopsys Inc. declined slightly in 2015 as the company acquired several software firms. Synopsys reported net income of 225.9 million, or $1.43 per diluted share. That's down about 13 percent from earnings of $259.1 million, or $1.64 million per diluted share, in fiscal 2014. Revenue, meanwhile, increased 9 percent to $2.2 billion. "Synopsys reported an excellent fourth quarter and fiscal 2015 against a somewhat challenging semiconductor industry backdrop, providing a solid foundation as we enter 2016," said Aart de Geus, chairman and co-CEO of Synopsys. The company anticipates revenues of $2.35 to $2.39 billion in fiscal 2016, with earnings per share in the range of $1.55 to $1.71. Synopsys develops software for developing the electronic products, including optical communications devices and photonic integrated circuits, as well as imaging and illumination systems.