Process Devices

Question 1

What due process devices do ?

Answer 1

Take the signal away from the input stage of a system and act on it by changing it in some way

Example: introducing a time delay, counting the number of times something happens or making a decision

Question 2

What is a good example of an electoral conductor and what do they do ?

Answer 2

Copper wire
Allow for electrical current to flow through
However electrical insulators do not allow electrical current through

Eg PVC plastic that surrounds a wire to make it safe

Question 3

What are semi conductors ?

Answer 3

A material that has an electrical conductivity value falling between that of a conductor and insulator

Materials like silicon control wether it is going to conduct or prevent

Question 4

What is a diode ?

Answer 4

A semi conductor as it allows for electrical current to flow one way but not the other

Question 5

What elements can be added to silicon to change its properties to that of a semi conductor ?

Answer 5

Boron
Phosphorus
This is known as doping

Question 6

What are integrated circuits ?

Answer 6

Tiny chips that contain resistors, capacitors and transistors which work together to complete the process they have been designed for

Eg time or counter

Question 7

Where are intergrated circuits used ?

Answer 7

Smaller products
Reduce outer packaging or housing

They cost less than the average sized component used together in a circuit

Question 8

What are microprocessors ?

Answer 8

The main processors inside a computer and they are designed to to be programmed to perform a different functions

Question 9

What do microprocessors contain and where are they used ?

Answer 9

Contain
- small transistors, resistors, diodes and capacitors

Used
- car keys to the car and from electronic toys to mobile phones