The final circuitry is the power supply circuitry. The
devices used in this circuitry comprises of many electronic
devices working altogether to convert the current and voltage
according to the needs of circuit components. This circuit
converts AC to DC, steps- down the voltage from 220 volts to
12 volts and finally it can further convert these 12 volts to 5
volts which is required by the digital components to function
properly. By using the above circuitry, we can transmit our
data from one end to another but to teach microcontroller how
to perform this whole operation, we use Assembly language,
and to maintain a complete database and for its designing at the
server end, we use two other language which are VB6 and MS
SQL.