WorksheetsElectric Schematics Intro to Symbols
Total questions: 14
Worksheet time: 11mins
The (a) is used to represent either a starting point, or a
stopping point. This is easy to remember since you start every
single Logic Flow Chart with a circle containing the word Start
or Begin. Often you will end a Logic Flow Chart with an End
or Finish circle, but sometimes there is no end to the chart
and it simply begins again. This is the case with any circuits
that never turn off, but are always on and collecting data
The (a) is used to represent any action which has only
one outcome. For example, when a video game console is
turned on it always checks to see what video game is in it. It
does this every time after it starts up and it never checks in a
different way. This kind of action is represented by the square,
it never changes and there is always only one outcome.
The (a) is used to represent a question or actions with
more than one possible outcome. For example, once your
video game has loaded there is often a menu with a bunch
of options. This would be written in a Logic Flow Chart as
a diamond with something like the words “Start Up Menu”
written inside of it. Each action the user can take from this
menu would be represented by lines coming off the diamond
leading to another square, diamond, or circle. Maybe our
example Logic Flow Chart would have three options leading
away from the “Start Up Menu” diamond, one line to start a
new game, one to continue a saved game and another for
game settings. In the Logic Flow Chart each option is written
beside the line leading away from the diamond. It is possible
to have as many options as you like leading away from a
diamond in a Logic Flow Chart.
The (a) in a Logic Flow Chart connect all the different
pieces. These are there so the reader knows how to follow
the Logic Flow Chart. The lines often have arrows on them
and lead to whichever piece (circle, square, diamond) makes
the most sense next. The lines usually have explanation of
what has happened when they lead away from diamonds, so
the reader knows which one to follow.
LED
Power AC
Power DC
Capacitor
Oriented diode
Power Supply AC
Power Supply DC
Diode
LED
Ground
LED
Diode
Resistor
Ground
Capacitor
Capacitor
Diode
LED
Resistor
Switch
Diode
LED
Inductor
Capacitor
Transistor
LED
Diode
Capacitor
Transistor
Inductor
This is a(n):
(a)
This is a(n):
(a)
This is a(n):
(a)
This is a(n):
(a)
