The vector stencils library "UML state machine diagrams" contains 35 symbols for the ConceptDraw PRO diagramming and vector drawing software. 
"The state diagram in the Unified Modeling Language is essentially a Harel statechart with standardized notation, which can describe many systems, from computer programs to business processes. In UML 2 the name has been changed to State Machine Diagram. The following are the basic notational elements that can be used to make up a diagram:
(1) Filled circle, pointing to the initial state.
(2) Hollow circle containing a smaller filled circle, indicating the final state (if any).
(3) Rounded rectangle, denoting a state. Top of the rectangle contains a name of the state. Can contain a horizontal line in the middle, below which the activities that are done in that state are indicated.
(4) Arrow, denoting transition. The name of the event (if any) causing this transition labels the arrow body. A guard expression may be added before a "/ " and enclosed in square-brackets ( eventName[guardExpression] ), denoting that this expression must be true for the transition to take place. If an action is performed during this transition, it is added to the label following a "/ " ( eventName[guardExpression]/ action ).
(5) Thick horizontal line with either x>1 lines entering and 1 line leaving or 1 line entering and x>1 lines leaving. These denote join/ fork, respectively." [State diagram (UML). Wikipedia]
The example "Design elements - UML state machine diagrams" is included in the Rapid UML solution from the Software Development area of ConceptDraw Solution Park.
                        
                                                
                    "The state diagram in the Unified Modeling Language is essentially a Harel statechart with standardized notation, which can describe many systems, from computer programs to business processes. In UML 2 the name has been changed to State Machine Diagram. The following are the basic notational elements that can be used to make up a diagram:
(1) Filled circle, pointing to the initial state.
(2) Hollow circle containing a smaller filled circle, indicating the final state (if any).
(3) Rounded rectangle, denoting a state. Top of the rectangle contains a name of the state. Can contain a horizontal line in the middle, below which the activities that are done in that state are indicated.
(4) Arrow, denoting transition. The name of the event (if any) causing this transition labels the arrow body. A guard expression may be added before a "/ " and enclosed in square-brackets ( eventName[guardExpression] ), denoting that this expression must be true for the transition to take place. If an action is performed during this transition, it is added to the label following a "/ " ( eventName[guardExpression]/ action ).
(5) Thick horizontal line with either x>1 lines entering and 1 line leaving or 1 line entering and x>1 lines leaving. These denote join/ fork, respectively." [State diagram (UML). Wikipedia]
The example "Design elements - UML state machine diagrams" is included in the Rapid UML solution from the Software Development area of ConceptDraw Solution Park.
                        
                            
                                 Computer Network Diagrams
                                Computer Network Diagrams                            
                                                    
                        
                        
                        
                            Computer Network Diagrams solution extends ConceptDraw PRO software with samples, templates and libraries of vector icons and objects of computer network devices and network components to help you create professional-looking Computer Network Diagrams, to plan simple home networks and complex computer network configurations for large buildings, to represent their schemes in a comprehensible graphical view, to document computer networks configurations, to depict the interactions between network's components, the used protocols and topologies, to represent physical and logical network structures, to compare visually different topologies and to depict their combinations, to represent in details the network structure with help of schemes, to study and analyze the network configurations, to communicate effectively  to engineers, stakeholders and end-users, to track network working and troubleshoot, if necessary.                        
                    -  Symbol  With Meaning In  Design Of Machine Element 
-  Design Of Machine Element  All  Symbol With Name 
-  Design Elements  for UML Diagrams | Basic Flowchart  Symbols  and ...
-  Design Of Machine Elements Symbol 
-  Symbols  And Their  Names  In  Design Of Machine Element 
- Interior  Design Machines  and Equipment -  Design Elements  ...
-  Design elements  - UML state  machine  diagrams | Basic Flowchart ...
- Different Types Of  Symbols  In  Design Of Machine Elements 
- UML State  Machine  Diagram. Design Elements  | Building Drawing ...
- UML State  Machine  Diagram. Design Elements  | Interior  Design  ...
-  Symbols  Of  Design Of Machines Elements 
- Basic Flowchart  Symbols  and Meaning | Sales Steps |  Name  The ...
- Mechanical Drawing  Symbols  | Interior  Design Machines  and ...
-  Design Of Machine Symbol 
- UML State  Machine  Diagram. Design Elements  |  Design elements  ...
-  Symbol  Used In  Designing Machine Elements 
- Useful  Symbol  In  Machine Design 
- Basic Flowchart  Symbols  and Meaning | Entity Relationship ...
- Interior  Design Machines  and Equipment -  Design Elements  ...
- How To use House Electrical Plan Software |  Name  And  Symbols  Of ...


 
                             
                             
                             
                            