In practical lab of digital system, there are two groups of students need to build a 7segment display circuits. The first group is led by Ali are using a 7447 decoder/driver IC meanwhile, the second group using a 7448 which is led by Safuan. Both groups connect their ICs to common-cathode 7-segment displays as shown in Figure 2. Figure 2: BCD to 7-segment Decoder/Driver The Safuan's group using the 7448 notices the LED segments glowing faintly, but the patterns are not correct for the digits that are supposed to be displayed. The Ali' group using the 7447 has an even worse problem which is no light at all. Both groups have checked and re-checked their wiring, to no avail. It seems as though all the connections are in the right place. Discuss the problem that happens in the circuit by using your own word. Recall your situation during your previous practical lab (hands-on) session in the class. Describe all the appropriate explanation. You need to find and study the datasheet to get more information. Following question: a. Find out the direction of electron flow through the wires between the decoder chip and the display. b. What is the feature differentiating between 7447 and 7448 of BCD to 7 segment decoder/driver IC? Explain it using your own word. c. Constructs the behaviour of the display driver IC of 7447 and 7448. d. Write up the SOP expression for both IC outputs of a, b, c, d, e, f, g e. Plot the Karnaugh map for both IC output of a, b, c, d, e, f, g i. Introduction ii. Content iii. Discussion iv. Conclusion v. References