The invention relates to a plate heat exchanger with a heat exchanger block which has a multiplicity of heat exchange passages. The assembly includes a circuit board having an LED contact and a latch contact. The despreading unit despreads a received multicode signal to generate despread symbols. The plaster member impairs visual sight and the line of vision to the needle tip during puncture may be impaired. The battery-structure may include a top panel, a bottom panel, a pair of side panels, and a plurality of web members. When mounting the CPU sockets on the upper surfaces, each CPU socket rests on the corresponding ribs, and solder balls of the CPU socket are supported by the corresponding upper surface.