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  * STD Library


Libraries are the folders that contain one or more packages.

library library_name;
library IEEE;

There are two types of libraries.

1. Source Library

Source library contains:

2. Work Library

It is he library that contains the generated VHDL code within the scope of a design.

In the following illustration, you can see the working library of ISE program and VHDL codes of this library generated during the design.


IEEE Library

IEEE library includes the following packages:



2                                                                                                                                     Vhdl_Code                                                                                                                                    


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