input and output

Question 1

input device

Answer 1

inputs data to be processed

Question 2

output device

Answer 2

outputs processed data

Question 3

laser printer outline

Answer 3

-uses toner sort of powder
-negative electric charge applied by drum to paper, which draws toner and melts ink on paper

Question 4

laser printer advantages and disadvantages

Answer 4

fast, expensive, high volume, good quality

Question 5

inkjet printer

Answer 5

-use ink cartilidges
-ink droplets called thermal bubble
-print head consisting of nozzles which spray ink side to side
-uses piezzoelectric electricity
-data stored in buffer

Question 6

inkjet printer advantages and disadvantages

Answer 6

cost efficient, quality not as good, slower

Question 7

outline sensors

Answer 7

sensor send data to microprocessor
data converted to digital using ADC
microprocessor compares data to pre stored values
within values = no action
value out of range = microprocessor send signal to something
might involve actuator