flowchart
a visual diagram that represents the steps in a process or algorithm using symbols and arrows to show the flow of control
flowline
the arrows you use to connect two symbols in a flow chart in to illustrate the flow of execution.
input symbol
A parallelogram in a flowchart that represents a step where data are received or entered into the process
input/output symbol (I/O symbol)
A parallelogram in a flowchart that represents an operation involving either receiving input or producing output, such as user entry or displaying results
output symbol
a symbol in a flowchart that indicates the output of data from a process
processing symbol:
a rectangle in a flowchart that represents a step where data are processed or an action is performed
terminal symbol
an oval or rounded rectangle in a flowchart that indicates the start or end of a process