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. As you can see from our project’s picture we used a 4 x 4 keypad, as instructed by Dr. Ayoubi we started off our project by working on the keypad and testing it on Proteus and on the PIC itself. Find out how UKEssays.
alarm system house
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