A computer, a graphic card, a display apparatus and a method of updating information is described, wherein, the computer has a first status and a second status, and the system power consumption of computer in the first status is larger than the system power consumption of computer in the second status. Of special application of the medicated, ringed-mesh is its use for securing contraception relying on biomechanical, pharmacological, and biochemical means. Spacers are then formed using DCS-HTO or TEOS.