(i) Explain two advantages of writing the software (firmware) for a microcontroller in C as oppose to using assembly.

(ii) For the decimal number 77 determine the 8 bit binary value and the corresponding hexadecimal number. (iii) For the PIC16 family of microcontrollers how many bits wide is the Program Counter. Explain the purpose of the program counter (iv) If the PIC microcontroller is clocked by a 1MHz crystal, calculate the instruction clock (internal clock) frequency and hence how many instructions are executed per second.