$1.$ Write an $8051$ assembly language program using $$MUL$$ and $$DIV$$ instructions. Write an $8051$ assembly language program to generate a delay of $10$ ms using $$DJNZ$$

instruction.

$15.$ Write an $8051$ assembly language program to generate a pulse of $5$ms with duty cycle

$40\%$ from p$1\mathrm{.}6$ using timer $1$ mode $0.$

$16.$ Write an $8051$ assembly language program to transfer $$VIT VIT VIT$$ at a baud rate of

$2400$ with $8-$bit data.

$17.$ Write an $8051$ assembly language program to receive $8$ letters at $28800$ baud rate