A housing has a front wall and a door, a rear wall, a pair of side walls each with a window, a bottom wall with a bottom recess with a lower hinged door, a top wall with a top aperture with an upper hinged door with a plurality of ventilation apertures, a water bottle, and a food receptacle. The frequency divider receives an input signal and, in response, produces a divided signal. In one embodiment, the needle assembly comprises a handle portion including a needle extending therefrom, the needle defining a lumen for passage of a fluid therethrough. However, when writing results of the ALU operations, only some of the global registers are candidates to be written to, depending on the pixel number.