Science fiction writer William Gibson coined the term cyberspace in the perennial favorite novel Neuromancer. Gibson used the word to describe a virtual world of computer networks that his cyberpunk heroes "jacked into." Everyone else uses the word cyberspace loosely to refer to virtual reality, the Internet, the World Wide Web, and many other kinds of computer systems that users become immersed in. It's about as ill-defined a term as information superhighway, but it's much hipper.
CAS Latency or CL
Latency is the rate at which RAM responds to the MCC on the motherboard. The lower the rate, the better. CAS stands for Column Array Strobe and could be described as a contact that assists the Memory Controller Chip find a specific bit of memory. Has an impact on overall latency.