NEW YORK — It's been a big week for tech gadgets. Microsoft started selling its Windows 8 operating system and Surface tablet computer. Apple announced new iPads and Mac computers. Samsung launched a giant smartphone.
But there's more: Microsoft has an announcement Monday on its Windows phone system. Google has one on its Android system for mobile devices. The search company may use that event to announce new gadgets to complement its Nexus 7 tablet computer.
Later in the week, Barnes & Noble Inc. will start shipping new Nook devices, while Apple's new iPads, including a smaller one, will be out.
These are some of the gadgets to expect for the holidays:
