Definitions Flashcards
Analogue signals
Signals that vary continuously in amplitude, frequency or both
Digital signals
Series of pulses with two states, on or off
Uses of analogue signals
Telephones
Uses of digital signals
Wireless communication media
Inputs
Collect data and send it to a computer (e.g switch)
Processors
Receive signals, process the info and tells the output what to do (e.g arduino)
Outputs
Receive signal and present the info to the real world (e.g LED)
Advantages of microprocessors
Some of circuit can be reduced
Can be re-programmed multiple times
Disadvantages of microprocessors
More expensive that other interested ciruits
Resistors
Resistors are used to control the flow of electricity around a circuit (measured in ohms)
Standard component
An individual part that is mass produced in thousands and millions to a common specification (size, material, waist etc)
E.g nut and bolt
Surface finishes
Added to a product to improve its functionality or it’s aesthetic
Surface finished are applied to … and applied by …
To stop corrosion
and applied by adhesives, spraying or printing
Force
A force is a push or pull motion that causes a change in speed, shape or direction
Shear
Force that pushes one part of an object one way and the other part of an object another way (e.g scissors)
