a) The interface is the path for communication between two components. When executing any instruction, the microprocessor will access the memory for reading instruction codes and the data stored in the memory. illustrate the block diagram input-output interfacing between a switch and LED which controlled by a microprocessor. ii. Determine of addressing mode used by each of the following instructions. b) The CCR is an 8-bit register using bits 0 to 4. Bits 0 to 4 are flags, each of which is affected in specific ways by the various operations performed by the CPU. By using an appropriate diagram, summarize the function of CCR flags. c) The M68000 family programming model consists of two register groups: user and supervisor. User programs executing in the user mode only use the registers in the user group. i. Illustrate the integer portion of the user programming model. ii. Differentiate programmer-visible to each registers bit size and functions