E-text <span>is digital textual information that can be stored, manipulated, and transmitted by electronic devices. The term "e-text" stands for electronic text and it is used for any digital document written, read, transmitted or manipulated by electronic devices, such as smart phones, PCs, tablets,...The origins of the e-text are in the beginning of the Internet.</span>
I'm guessing you mean the six external parts as in input and output devices
Here are the six external parts:
>Keyboard
>Mouse
>Monitor
>Speakers
>Printer
>Microphone or USB...I think you can choose either one as they are components outside of the computer/external/ -I/O devices
Answer:
Because the things that you down load could contain viruses or inappropriate content that you don't want to see.
Explanation: