Declined Transition Tables

[Steve Fabian]

A state transition table is essentially a two-dimensional array of program logic, as shown below. The first column is a list of possible states; each subsequent column is associated with a possible event (though some events may not be possible in all states). Two items are entered in each location where a state intersects with a possible events: 1) the action to be performed, and 2) the next state. This is a representation of the program's logic, particularly useful if each "event" represent a potential next input element.

A potential syntax (pseudocode) is:

[/FONT][/B][/SIZE]

statetable table_name
 
state start
 
event e1
actiona1
next start
 
event e2
action a2
next middle
 
event EOF
action report_empty
next table_exit
 
event default
action report default
state start
 
state middle
 
event e2
action a2
next middle
 
event eof
action report summary
next table_exit
 
endtable

The text and drawing below are from the "State Transition Table" topic in Wikipedia

Two-dimensional state tables

State transition tables are typically two-dimensional tables. There are two common forms for arranging them.

• The vertical (or horizontal) dimension indicates current states, the horizontal (or vertical) dimension indicates events, and the cells (row/column intersections) in the table contain the next state if an event happens (and possibly the action linked to this state transition).

State Transition Table
Events
State E1 E2 ... En
S1 - Ay/Sj ... -
S2 - - ... Ax/Si
... ... ... ... ...
Sm Az/Sk - ... -
(S: state, E: event, A: action, -: illegal transition)

 

[Steve Fabian]

I tried to use the Forum because it has more editability than the Feedback, but it still missed on the graphics.
This is the Wikipedia URL from which I copied the 2nd form of state transition tables (below):
http://en.wikipedia.org/wiki/State_transition_table

State Transition Table
Events
State E1 E2 ... En
S1 - Ay/Sj ... -
S2 - - ... Ax/Si
... ... ... ... ...
Sm Az/Sk - ... -
(S: state, E: event, A: action, -: illegal transition)[/quote]