ABSTRACT
In June of 1925, Charles Francis Jenkins successfully transmitted a series of motion pictures of a small windmill to a receiving facility over five miles away. This demonstration would move the television from an engineer’s lark to reality. Television was based on vacuum tube technology and the use of extensive broadcast facilities. The transistor replaced bulky, failure-prone vacuum tubes and resulted in television cameras becoming smaller and more affordable. The videotape machine meant that the images no longer had to be broadcast; the images could be collected through one or more video cameras and the data transmitted via a closed circuit of wiring to be viewed on a video monitor or recorded on tape. Transmission media refer to how the video signal from the cameras will be transported to the multiplexer or monitor. CCTV systems are by no means a guarantee of security, but the controlling effect they have on human behavior cannot be dismissed easily.
