An information processing apparatus such as a personal computer or a word processor is disclosed. A main unit includes at least processing means for processing input data, and main unit memory means connected to the processing means. A display device is attachable to and detachable from the main unit...http://www.google.com.tw/patents/US5347630?utm_source=gb-gplus-share專利 US5347630 - Computer system having a detachable display
