Summary: | Has been carried out of design a tool to lock a door room used the
password. The purpose of building this device is to the security system of the
room. This system used to security room awake. This instrument is divided into
two parts, which is part of the hardware and software. Hardware keypad,
consisting of a system of minimum mikrokontroler ATMega 168 as a series of
benders the input and output, a series of LCD display the output using. The
software made using program software arduino. Data from keypad that berisis
knobs, break into mikrokontroler ATMega 168 already containing program. If the
output data when it is appropriate program be kicked out the results on buzzer
will give off the sound to be signaling that the result of the data input by keypad
that ' s right or wrong, to LCD will appear a text that is the result of a program
that is in mikrokontroler ATMega 168 and to motor servo going to rotate
corresponding output of the program in mikrokontroler ATMega 168 to regulate
how long his motorcycle servo this is going to rotate. The output of a system of
locks a door room used the password results have been mentioned, according to a
draft is a program. Of the data can be said of that system now that can work well.
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