HP shares declined this week, closing down by $0.21 to $14.73 Friday.

HP's acknowledgement of the need to cut back on PC models will affect the supply chain, analysts said.

"That is not a good sign," said Vijay Rakesh, an analyst for Sterne Agee, in a report on the chip market.

The reduced number of HP PC models will affect Intel and Advanced Micro Devices, which still derive 65 percent to 75 percent of their sales from PC, Rakesh noted.

Failure to succeed in the mobile market affects a wide range of players. Online games maker Zynga, for example, said late Thursday that it now expects 2012 bookings of nearly $1.09 billion to $1.1 billion, down from a prior forecast of between $1.15 billion to $1.23 billion. Bookings represent in-game purchases of virtual goods. The company's uphill battle in the mobile realm is largely blamed for the loss.