$10.$ Neither multiplication nor division are supported by the MSP$430$ CPU ALU.

For multiplication some microcontroller models include hardware multiplier

peripherals which can be used; otherwise, multiplication must be realized by

software.

Both multiplication and division of unsigned numbers can be realized by direct

brute force methods. That is

Multiplication: To multiply AxB, add A times B$.$

Division: To divide A$/$B$,$ subtract B from A as many times as possible until the

difference is smaller than B$.$ The difference is the residue R and the number of

subtractions is the quotient Q$.$

a$.$ Test your understanding by multiplying $11$x$3$ and dividing $11/3$ by hand

with the algorithms.

b$.$ If each factor in a multiplication is n bits wide, what is the number of bits

that we must reserve for the product?

c$.$ Write pseudo codes or draw a flowchart for each operation, and encode them

in assembly language. For the multiplication, assume both factors are bytes.

For the division A$/$B$,$ assume A is a $16-$bit word and B a byte.