The PIC has an overall of 40 pins. These pins include input/output ports such as PORTA, PORTB, PORTC, PORTD, PORTE and two Vdd ports for input voltage. The PIC architecture is characterized by its multiple attributes:Separate code and data spaces Harvard architecture. A small number of fixed length instructions. Most instructions are single cycle
execution, with one delay cycle on branches and skips. All RAM locations function as registers as both source and destination of math and other functions. A hardware stack for storing return addresses. Data space mapped CPU, port, and peripheral
registers. The program counter is also mapped into the data space and writable. There is no distinction between memory space and register space because the RAM serves the job of both memory and registers, and it is usually just referred to as the register file. The keypad:This device is used to enter the password selected by the user and to arm or disarm the alarm by selecting the various profiles installed in the system.
Furthermore, burglary is not only the entry of the house by itself; illegal entry of a garage or any other structure on the premises also represents household burglary. Figure1. Home Burglary Statistics 2008 2011. Washington Post . Retrieved from he most common targets are residential houses. Those of them without security systems installed are about three times as likely to be broken into as homes with security systems installed.
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