CIRCUITRY KEYBOARD
ELECTRONIC CIRCUIT EXPERIMENT KIT
GLOSSARY
Circuit
- A series of electrical components in a closed loop that gives a return path for the electrical current. If the circuit
Conductor
Current
negative pole to the positive creates the current.
Electron
- A negatively-charged subatomic particle. They play an important part in electricity, magnetism and
chemistry.
Insulator
Negative
- Symbolized with a “-”. One of the two “poles” in electronics and magnetism.
Ohm
- (Pronounced “oam” A measurement of resistance and used on Resistors (below) to show their rating. The higher
the number, the greater the resistance. Symbolized with a “Ω”.
Positive
Volt
Voltage
- It creates the current by causing electrons to move in a circuit. Not the same as volt, above.
Battery
LED
Resistor
Resistor, Variable
Speaker
Switch, Push
Switch,
Switch, Reed
Touch Plate
Wire
A device for storing energy. Batteries have external connectors
(terminals) which connect to the circuit. Electrons move from the
negative terminal (anode) through the circuit to the positive terminal
(cathode). Each symbol represents a single battery.
L
ight
E
mitting
D
iode. These light up when current passes through
only, and the symbol shows which the proper direction.
with a number and “Ω” symbol. The higher the number the greater the
resistance.
be changed manually, such as by turning a knob.
A device that uses magnets to convert electrical signal into audible
sound.
A traditional type of switch were a slider is used to open or close a
A spring-loaded switch which will remain open until it is pressed,
allowing the two metal plates to come in contact, closing the circuit.
A small magnetic switch with two metal reeds (wires) inside. When a
magnet comes close to the switch, it will cause the reeds to connect,
A plate with two conductive paths upon it. The two paths do not
the two paths.
A length of metal wrapped in insulation. The metal has very low
circuit.
COMPONENT
SYMBOL
EXPLANATION
