A switch, unless it's busted, can be either on or off, closed or open. A switch that is “on” or “closed” passes electrical signal through it, while a switch that is “off” or “open” blocks that signal. Computer Scientists represent an “on” switch with a 1 and an “off” switch with a 0.
Mail Merge is a handy feature that incorporates data from both Microsoft Word and Microsoft Excel and allows you to create multiple documents at once, such as letters, saving you the time and effort of retyping the same letter over and over.
The Mail Merge feature makes it easy to send the same letter to a large number of people.
By using Mail Merge, we don't have to type each recipient's name separately in each letter.
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