Lenovo sells its products in around 160 countries. Lenovo's principal facilities are in Beijing and Morrisville, with research centers in Beijing, Shanghai, Shenzhen, Xiamen, Chengdu, Nanjing, and Wuhan in China, Yamato in Kanagawa Prefecture, Japan, and Morrisville in the U.S. It also has a joint venture with NEC, Lenovo NEC Holdings, which produces personal computers for the Japanese market. Lenovo was founded in Beijing in November 1984 as Legend and was incorporated in Hong Kong in 1988. Lenovo acquired IBM's personal computer business in 2005 and agreed to acquire its Intel-based server business in 2014. Lenovo entered the smartphone market in
ThinkPad Tablet studies and sharpened pencils were used to study the appropriate length with users. The final pen developed based on this was 120 mm long. The ThinkPad Tablet was launched with an optional, dedicated . The folio offered a Lenovo keyboard and an optical trackpoint. The presence of this folio was appreciated by PC World as well, with the reviewer calling the folio the Tablet’s best feature. The folio was designed to offer users of the ThinkPad Tablet a typing experience similar to that of a ThinkPad laptop, as well as cursor control. The full-size keyboard on the folio reputedly offered