$($b$)$ Write classification of embedded systems and explain in detail.

$($c$)$ Write a short note on Context Switching and Task Scheduling.

$43$

$3.($a$)$ Explain how to implement interrupt enable$/$disable operations in the $8051?$

$($b$)$ How to set baud rate for serial communication $?$ Explain with some examples.

$($e$)$ Discuss various JUMP instructions for $8051.43$

$4.($a$).$ Distinguish between sensors$,$ transducers and actuators.

$6$

$($b$)$ Develop assembly language program for generating $$ square wave with $25\%$ duty cycle and time period $100s$ on port bit P$2\mathrm{.}2.$

$6$

$5.($a$)$ What are the features of the USB protocol $?$

$($b$)$ Explain the various interrupt handling mechanisms.

$($c$)$ Write a short note on Industrial Buses. $43$