Downloading:

"Downloading" refers to your computer receiving or copying a file from another computer through the Internet. There are a number of different file formats you can download, such as HTML, GIF, JPEG, SWF, PDF, sound and video files, etc.

Two issues affect the length of time it takes for your computer to receive a file: file size and Internet connection speed.


File Size
File size specifications are measured in bytes.

• 75 b = 75 bytes
• 75 kb = 76,800 bytes or 75 kilobytes
• 75 mb = 78,643,200 million bytes or 75 megabytes


Connection Speed
Connection speed is measured by the number of bytes per second at which you receive files. Your connection speed depends on two variables. The first is the speed of your connection (modem or LAN), and the other is the connection allowance of your Internet service provider (ISP). Your connection speed will be the slower of the two variables.

• 14.4 kb = 1,600 bytes per second
• 28.8 kb = 3,200 bytes per second
• 56.0 kb = 6,222 bytes per second


Below is a sample chart for downloading files of varying sizes at different connection speeds.

Internet Connection Speed	Estimated Download Time
	30 kb	100 kb	1 mb
14.4 Modem	19.2 sec.	64 sec.	10.6 min.
28.8 Modem	9.6 sec.	32 sec.	5.3 min.
56.0 Modem	4.9 sec.	16.5 sec.	2.7 min.
112.0 ISDN Modem	2.5 sec.	8.2 sec.	1.3 sec.

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