NVIDIA (Nasdaq: NVDA) is the world leader in visual computing technologies and the inventor of the GPU, a high-performance processor which generates breathtaking, interactive graphics on workstations, personal computers, game consoles, and mobile devices.

Holding company with subsidiaries which design, manufacture and market broad range of computer control devices, including mice, trackballs, touchpads...

Imagine what Samsung can do for you! You'll find product and support information for our TVs, mobile phones, video & audios, computers and related products, various home appliance products.

Official Hewlett-Packard site - Buy or learn about HP printers, laptops, computers, digital cameras, servers, storage, networking, software, enterprise solutions and more.

Shop Lenovo computers. Special offers on ThinkCentre and IdeaCentre desktops and ThinkPad and IdeaPad laptops, notebooks and netbooks. For business, home and school.

从全球 CNET 专家那里获取完整的产品评论、最新消息、技术报道、每日优惠和类别深入研究。

Computerworld, the 'Voice of IT Management' is your leading information source for coverage laptops, desktops, softwares, hardwares, security, networking and storage.

The CERT® Program is part of the Software Engineering Institute (SEI), a federally funded research and development center at Carnegie Mellon University in Pittsburgh, Pennsylvania.

APCERT cooperates with CSIRTs (Computer Security Incident Response Teams) to ensure Internet security in the Asia Pacific region, based around genuine information sharing, trust and cooperation.

采用Item Response Theory（IRT）技术，进行Computerized Adaptive Testing（CAT）方式的中文网络心理测验。