Next we look at networks and the Internet. Finally we finish this unit with a look at computer graphics. The operating system acts as an interface between the application program and the actual hardware. It handles such tasks as assigning resources and loading and unloading memory. Fiber optics are used to carry huge amounts of data.
Light is an electromagnetic wave, like a radio wave, only at a much higher frequency.
In general, the higher the frequency of the carrier wave, the more information which that communications channel may carry. Limitations such as how to control data flow. This unit, covering chapters 11 and 12 of the text, deals with issues such as program development and life cycles, the evolution of programming languages, ergonomic and health issues around computers, and ethical matters such as computer crime and piracy. This is where most programs are born. It is likely that in the 90's, bootleg software was almost as popular as bootleg music was in the 80's.