Pls I need you to answer all questions here.

EXPERIMENT: D/A Converter Part A: D/A Converter PSpice/Matlab 1. Simulate the R-2R resistor network shown in Figure 4.3 by following the PSpice Tutorial - Part 1 that you can download from the website. Print out your simulated waveform. Click and drag your cursor to draw a box around your circuit and text box on your PSpice circuit diagram (you may need to zoom out) and print out your circuit diagram. 2 kQ 2 kQ Bo FIGURE 4.3: R-2R Network. 2. What base 10 (decimal) values are formed and in what order by the digital stimulators on the signals B/3:0]? Answer 3. Write Matlab statements that will plot the output V as a function of the 4-bit binary number B3:0. First, type clc, Enter, type % and your name, then Enter to identify your work. Then, you will need to create four test vectors, B3 to BO, each of which contain 17 test values such that they collectively will test all of the binary values from 0 to 15 and then return to zero. Enter the formula, V- B3/2 +B2/4 +B1/8 +B0/16 You will need to create a vector t which also contains 17 test values, O to 16 so you can use the function stairst, V) to plot the formula. Use a semicolon to close every statement except the formula (V...). 4. When you get a plot, click the Insert icon at the top of the plot window, click Title, and type your name to identify your plot. Print out your Matlab program and plotted graph