1. a) Identify the CPU of your mobile phone. b) Obtain the CPU architecture diagram or a system diagram that shows how the CPU is connected with other components. c) Explain if the CPU (or the mobile phone system) is categorised as a variant of von Neuman architecture or a modified Harvard architecture. 2. a) Convert the following binary numbers to the decimal integer format. Please consider both the signed and the unsigned binary formats. i. 1001 0110(2) ii. 0111 1110(2) b) Show how the below operations works in binary numbers in the 8-bit signed integer format. i. 13(10) + 115(10) ii. -98(10) + (-30(10)) 3. a) When communicating between different systems, the Endianness could be a problem. Explain what big-Endian and small-Endian refer to. b) Demonstrate how a big-Endian system would communicate with a small-Endian system, with a 16-bit signed integer "127