A drug delivery system includes a plurality of sites, a fluid channel for delivering a drug to one of the plurality sites, and a light channel for delivering light to an area near one of the plurality of sites. A window has focus before the desktop is revealed. One or more spikes extend from each outer end wall, and each hollow bore is sized to fit over an end of the tubular body and slidably pass from the end along at least a portion of the length of the tubular body. The second physical value represents a second detectable item of information in addition to the first physical value representing the data, independently of the first physical value. An opening and closing mechanism moves between an open and a closed position. The case includes: a rear case ; and a front case removably attached to the rear case, which has an opening portion for exposing a touch detection region and a visible region of the touch panel and the display unit stacked together.