WHAT’S THE NEED OF
MICROCONTROLLER?
Nowadays, every human being has many tasks and
responsibility. In this mechanical life styles it is difficult for a person to
allot time for every tasks rather than his work. So, to make things easy and
simple automation came into existence.
fig 1
fig2
Microcontroller does many things which has to be performed
by a person instead of him reducing his work load.
In the fig 1, the boy has to perform several tasks such as
switching the fan, light, monitor the house and opening the door if any
guest arrive to the house. It’s
difficult for the boy to perform all these tasks simultaneously and there may
be a chance that he misses out some job assigned to him
Eg:- forget to switch off the fan, light ect
To avoid this we all go for automation. In fig 2 consider
the save scenario but here instead of the boy a microcontroller has been
assigned the job. Now the controller is
interfaced with some sensors or devices which will share its information to the
controller and thus microcontroller does all the job simultaneously.
Eg:- Automatic open
and close the gate whenever someone enter the house, triggers the switch ON or
OFF fan, light by using relay(electromechanical switch) all this tasks are
performed simultaneously
This are the some of
the basic and simple task that can be done with the help of microcontroller(home
application). In industrial levels, several complex tasks are done with the
help of microcontroller.
IMPORTANT AND
ADVANTAGE OF USING MICROCONTROLLER:
Many devices such as LCD, LED, heater
sensors, pressure sensors ect and
transmit the currant states and interface with the some hardware using control
device(eg. relay) can be interface with
microcontroller and it can do any specific task needed.
Complex circuits can
be reduced by using a microcontroller.
PERIPHERAL INTERFACE:
- It requires a minimum power supply to perform its tasks.
- I/P devices: keyboard, sensors(heat, pressure, temperature ect).
- O/P devices: LCD, LED, speaker, GPS or any transmitter /receiver, motor, relay ect.
