plaese do not skip any part

QUESTION 1 a) Define the term single-board computer. b) Propose a system or project for an elderly nursing home that can be built with a single-board computer. c) A computer can be defined in variety of terms. Answer the following questions: i. Define the term computer. List any THREE (3) different types of computers that can be identified in a restaurant iii. Explain the function of each of the computers in the restaurant according to the answer given in c(ii). d) When Alex is doing the tutorial question for the base number topic. He had opened the calculator program to calculate the arithmetic expressions. After completing the tutorial, he closed the app. Explain how the computer system has executed the calculator program in terms of memory data transmission when Alex opens the program