Q2 Consider the circuit as shown in Figure 2.1. RACH DO L1 HOH CRYSTAL C2 C1 2207 U1 OSCHCUKIN RAO OSCA CUKOUT RAI RA MER RAS RAUTOCO ROINT R01 RA RES RS RES RO AB PCIOFA D1 R1 10 R3 TO R4 10 RL1 boce R2 Q1 340 Figure 2.1 Circuit to control lamp (C) Assume that pin RB1 will supply HIGH signal that will make the lamp Ll turned on. Also assume that this situation occurs only when certain pin at PORT A receive HIGH signal. Consider current situation where all switches connected to PORTA are latched as shown in the figure, and it cannot be opened. Propose a bitwise operation to be done onto the received inputs and show the calculation where the lamp Ll will still be turned on in each one of the following desired situations: i. ii. only switch attached with RAO is latched. only switch attached with RAl is latched. only switch attached with RA2 is latched. only switches attached with RAO and RA2 are latched. iii. iv. V. switches attached with RAO, RA1 and RA2 are latched. 10