Four light-emitting diodes (leds) are designated as led0, led1, led2, and led3. these leds
are illuminated by applying a voltage to them corresponding to "logic 1", and darkened by applying a
voltage to them corresponding to logic 0. a computer generates a 4-bit number a = a3a2a1a0. design
and sketch a digital logic circuit that will illuminate led0 when a=0100, led1 when a=0101, led2
when a=0110, and led3 when a=0111. for all other values of a, the leds should be dark. you
may use logic gates and/or decoders for your circuit. clearly label all leds, signal lines, and decoders.
try to minimize the number of components.

Agas contained within a piston-cylinder assembly e end nation about same energy states, 1 and 2, where pi 10 bar, v undergoes two processes, a and b, between the sam 0.1 m3, ui-400 kj and p2 1 bar, v2 1.0 m2, u2 200 kj: process a: process from 1 to 2 during which the pressure- volume relation is pv constant process b: constant-volume process from state 1 to a pressure of 2 bar, followed by a linear pressure-volume process to +20 0 state 2 kinetic and potential energy effects can be ignored. for each of the processes a and b, (a) sketch the process on p-v coordinates, (b) evaluate the work, in kj, and (c) evaluate process the heat transfer, in kj