QUESTIONS AND PROBLEMS

$2\mathrm{.}1$ What is the difference between a single$-$chip microcomputer and a microcontroller?

$2\mathrm{.}2$ What is an $8-$bit microcontroller? Name one commercially available $8-$bit microcontroller.

$2\mathrm{.}3$ What is the difference between:

$($a$)$ A program counter and a memory address register?

$($b$)$ An accumulator and an instruction register?

$($c$)$ A general$-$purpose register$-$based CPU and an accumulator$-$based CPU.