Television
[size=3][color=#29384e][font=Times New Roman]Television[/font][font=宋体]——[/font][font=Times New Roman]the most pervasive and persuasive of modern technologies[/font][font=宋体]，[/font][font=Times New Roman] marked by rapid change and growth-is moving into a new era[/font][font=宋体]，[/font][font=Times New Roman] an era of extraordinary sophistication and versatility[/font][font=宋体]，[/font][font=Times New Roman] which promises to reshape our lives and our world. It is an electronic revolution of sorts[/font][font=宋体]，[/font][font=Times New Roman] made possible by the marriage of television and computer technologies.[/font][/color][/size][size=3][color=#29384e][font=Times New Roman] [/font][/color][/size]
[size=3][color=#29384e][font=宋体] [/font][font=Times New Roman]The word [/font][font=宋体]“[/font][font=Times New Roman]television[/font][font=宋体]”，[/font][font=Times New Roman] derived from its Greek [/font][font=宋体]（[/font][font=Times New Roman]tele[/font][font=宋体]：[/font][font=Times New Roman] distant[/font][font=宋体]）[/font][font=Times New Roman] and Latin [/font][font=宋体]（[/font][font=Times New Roman]visio[/font][font=宋体]：[/font][font=Times New Roman] sight[/font][font=宋体]）[/font][font=Times New Roman] roots[/font][font=宋体]，[/font][font=Times New Roman] can literally be interpreted as sight from a distance. Very simply put[/font][font=宋体]，[/font][font=Times New Roman] it works in this way[/font][font=宋体]：[/font][font=Times New Roman] through a sophisticated system of electronics[/font][font=宋体]，[/font][font=Times New Roman] television provides the capability of converting an image [/font][font=宋体]（[/font][font=Times New Roman]focused on a special photoconductive plate within a camera[/font][font=宋体]）[/font][font=Times New Roman] into electronic impulses[/font][font=宋体]，[/font][font=Times New Roman] which can be sent through a wire or cable. These impulses[/font][font=宋体]，[/font][font=Times New Roman] when fed into a receiver [/font][font=宋体]（[/font][font=Times New Roman]television set[/font][font=宋体]），[/font][font=Times New Roman] can then be electronically reconstituted into that same image.[/font][/color][/size]
[size=3][color=#29384e][font=Times New Roman] [/font][/color][/size]
[size=3][color=#29384e][font=宋体] [/font][font=Times New Roman]Television is more than just an electronic system[/font][font=宋体]，[/font][font=Times New Roman] however. It is a means of expression[/font][font=宋体]，[/font][font=Times New Roman] as well as a vehicle for communication[/font][font=宋体]，[/font][font=Times New Roman] and as such becomes a powerful tool for reaching other human beings.[/font][/color][/size]
[size=3][color=#29384e][font=Times New Roman] [/font][/color][/size]
[size=3][color=#29384e][font=宋体] [/font][font=Times New Roman]The field of television can be divided into two categories determined by its means of transmission. First[/font][font=宋体]，[/font][font=Times New Roman] there is broadcast television[/font][font=宋体]，[/font][font=Times New Roman] which reaches the masses through broad-based airwave transmission of television signals. Second[/font][font=宋体]，[/font][font=Times New Roman] there is nonbroadcast television[/font][font=宋体]，[/font][font=Times New Roman] which provides for the needs of individuals or specific interest groups through controlled transmission techniques.[/font][/color][/size]
[size=3][color=#29384e][font=Times New Roman] [/font][/color][/size]
[color=#29384e][font=宋体][size=10.5pt] [/size][/font][size=10.5pt]Traditionally[/size][font=宋体][size=10.5pt]，[/size][/font][size=10.5pt] television has been a medium of the masses. We are most familiar with broadcast television because it has been with us for about thirty-seven years in a form similar to what exists today. During those years[/size][font=宋体][size=10.5pt]，[/size][/font][size=10.5pt] it has been controlled[/size][font=宋体][size=10.5pt]，[/size][/font][size=10.5pt] for the most part[/size][font=宋体][size=10.5pt]，[/size][/font][size=10.5pt] by the broadcast networks[/size][font=宋体][size=10.5pt]，[/size][/font][size=10.5pt] ABC[/size][font=宋体][size=10.5pt]，[/size][/font][size=10.5pt] NBC[/size][font=宋体][size=10.5pt]，[/size][/font][size=10.5pt] and CBS[/size][font=宋体][size=10.5pt]，[/size][/font][size=10.5pt] who have been the major purveyors of news[/size][font=宋体][size=10.5pt]，[/size][/font][size=10.5pt] information[/size][font=宋体][size=10.5pt]，[/size][/font][size=10.5pt] and entertainment. These giants of broadcasting have actually shaped not only television but our perception of it as well. We have come to look upon the picture tube as a source of entertainment[/size][font=宋体][size=10.5pt]，[/size][/font][size=10.5pt] placing our role in this dynamic medium as the passive viewer[/size][/color]
页:
[1]