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The Library Browser displays the Simulink block libraries installed on your system. You build models by copying blocks from a library into a model window.
Simulink Library Browser

When using the Library Browser, note the following:
You can view the blocks in a library by selecting the library name on the left side of the Library Browser, or by double-clicking the library.
When you select a block, a description of that block appears at the bottom of the browser.
For more information on a block, select the block, then select Help > Help on the Selected Block to display the help page for the block.
You can view the parameters for a block by right-clicking the block, then selecting Block Parameters.
You can search for a specific block by entering the
name of the block in the block search field, then clicking the Find
block icon
.
Simulink software provides 16 standard block libraries. The following table describes each of these libraries.
| Block Library | Description |
|---|---|
| Commonly Used Blocks | Contains a group of the most commonly used blocks, such as the Constant, In1, Out1, Scope, and Sum blocks. Each of the blocks in this library are also included in other libraries. |
| Continuous | Contains blocks that model linear functions, such as the Derivative and Integrator blocks. |
| Discontinuities | Contains blocks with outputs that are discontinuous functions of their inputs, such as the Saturation block. |
| Discrete | Contains blocks that represent discrete time functions, such as the Unit Delay block. |
| Logic and Bit Operations | Contains blocks that perform logic or bit operations, such as the Logical Operator and Relational Operator blocks. |
| LookUp Tables | Contains blocks that use lookup tables to determine their outputs from their inputs, such as the Cosine and Sine blocks. |
| Math Operations | Contains blocks that perform mathematical and logical functions, such as the Gain, Product, and Sum blocks. |
| Model Verification | Contains blocks that enable you to create self-validating models, such as the Check Input Resolution block. |
| Model-Wide Utilities | Contains blocks that provide information about the model, such as the Model Info block. |
| Ports & Subsystems | Contains blocks that allow you to create subsystems, such as the In1, Out1, and Subsystem blocks. |
| Signal Attributes | Contains blocks that modify the attributes of signals, such as the Data Type Conversion block. |
| Signal Routing | Contains blocks that route signals from one point in a block diagram to another, such as the Mux and Switch blocks. |
| Sinks | Contains blocks that display or export output, such as the Out1 and Scope blocks. |
| Sources | Contains blocks that generate or import system inputs, such as the Constant, In1, and Sine Wave blocks. |
| User-Defined Functions | Contains blocks that allow you to define custom functions, such as the Embedded MATLAB™Function block. |
| Additional Math & Discrete | Contains two additional libraries for mathematical and discrete function blocks. |
The model window contains the block diagram of the model. You build models in the model window by arranging blocks logically, setting the parameters for each block, and then connecting the blocks with signal lines.

The model window also allows you to:
Set configuration parameters for the model, including the start and stop time, type of solver to use, and data import/export settings.
Start and stop simulation of the model.
Save the model.
Print the block diagram.
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Learn more about Simulink through this collection of videos, articles, technical literature and the Getting Started with Simulink Guide.
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