Consider an 8259A PIC. At time 1 ns, 3 ns and 5 ns three interrupts have come via IR2, IR0 and IR4, respectively. The peripheral is operating in fixed-priority mode. Each interrupt takes 10ns to
process. Now describe the functions of each component to handle the entire interrupt procedure.

Aseries piping system conveys methyl alcohol. the system consists of 70 m of 1- nominal pipe follow by 50 m of 2-nominal pipe, both schedule 40 commercial steel. the 1-nominal pipe contains 3 90° elbows (regular) anda fully open gate valve, all threaded. the pressure drop through the system is 150 kpa. determine the volume flow rate through the system that is horizontally laid.