GCSE EDEXCEL DT: 1.6 electronic components

What is an input device?

information that is given to the system

What is a control device?

Something that interprets the input signal and sends instructions to the output device

What is an output device?

something that réponds to the input signal sent from the control device

What is an Light dependant resistor (LDR)

Input device
in the light it's resistance is low so electricity flows
what n the dark resistance is high so it linings the flow of electricity

What is a thermistor

Input device
when hot resistance is low so electricity flows
when could of resistance is high limiting flow of electricity

What is a single through switch

control device
a button which switches between on and off

What is a push to make

control device
it will produce a 1 when pressed and a 0 when off

What is a push to break

control device
It will produce a 0(off) when pushed and a 1(on) when released

What is a resistor

a device which limits the flow of electrical current
messed in ohms

what is a transitor

it is a switch with 3 connections. a small voltage at the base turns it on and let's a larger current flow

What is a light emitting diode (led)

emits light when an electrical current is passed through

What is a buzzer

makes sound

What is a lamp

produces light

what is a speaker

produces sound