Network PA System for tool to massive tasks Intro The XC-9000 system is a totally electronic network PA system based upon the TCP/IP protocol. By leveraging the TCP/IP protocol, the system makes sure the efficient and right transmission of all data packets. Not only can it utilize existing computer networks, such as LANs or the Net, to transmit

Optical theory progressed from the mid-17th century with treatises composed by philosopher René Descartes, which spelled out many different optical phenomena including reflection and refraction by assuming that light was emitted by objects which developed it.[26] This differed substantively from The traditional Greek emission idea. Within the late