Using the following grammar write an attributes grammar that can calculate the decimal value of an octal number. Grammar: number = list list = list octal | octal octal = '0'|'1'| '2' | '3' | '4' | '5' | '6' | '7' Notes: An octal number consists of octal digits, i.e. 0 to 7. The following example shows how to convert the octal 67 to its equivalent decimal. The symbol star represents multiplication. 67 = 6*8¹ +7* 8° = 6*8 + 7 = 55

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Intelligent Machines

Machines that use artificial intelligence to learn from the environment and past experiences to perform better in the presence of variability and uncertainty are called intelligent machines. Intelligence develops according to environment and experience. It is human-like behavior. When the computer system or any programmed machine learns from the inputs and corresponding outputs, it can be called an intelligent machine.