Mounting frames for holding electronic devices are described. The deposition system deposits a solder outwardly from a substrate of a number of substrates. The modules communicate and maintain time synchronization using a communication mechanism that may be adapted to localized positioning of modules andor widely dispersed positioning of modules with no change to the underlying functionality in the modules. In the second stable state, the received signal is stable at a second signal level. The present invention also relates to a transgenic monocot plant transformed with a DNA molecule that increases tolerance to salt stress and drought stress operably linked to at least one ABRC unit and a minimal promoter. The optical receiver further includes an optical autocorrelator to operate on a signal light output from the second dispersion compensator and a controller to control the second dispersion compensator to increase autocorrelation of the optical autocorrelator, and to control the first dispersion compensator according to the result of said controlling the second dispersion compensator.