A light-emitting module includes a printed circuit board and a light emitting package. A number of Gaussians computed is reduced based upon Gaussians already computed for the first stream and a number of Gaussians co-occurring in the second stream. The carrying case is further constructed with a bracket or optional test fixture for a CPR Meter. Upon receiving the image-forming-apparatus control program for handheld devices, the handheld device stores it in a memory unit, terminates the execution of the initial communication program, and executes the image-forming-apparatus control program for handheld devices.