(Solved): 51. The encoder shown in the system block diagram of Figure 687 encodes each decimal ke, closure ...

51. The encoder shown in the system block diagram of Figure $6?87$ encodes each decimal ke, closure and converts it to BCD. Use a $74\mathrm{HC}147$ to implement this function and draw $a$ complete logic diagram including pin numbers. 52. The system in Figure 6-87 requires two code converters. The BCD-to-binary converter cherst the 2-digit BCD number in Register A to an 8-bit binary code (actually only 7 bits are required because the MSB is always 0 ). Use appropriate fixed-function IC code converters to implemic the BCD-to-binary converter function and draw a complete logic diagram including pin net