23. In Figure 5.19, identify ports A and B as input or output ports. 24. In Figure 5.19, what are the addresses of ports A and B? 25. In Figure 5.17, explain why the nulee with
А, А, As E, EE) MSB A D. Az 3-to-8 Decoder Data Bus Port A Data Az Do 0, EN A, Ao MSB RD E, E, E Og EN D WR 02 Data Bus Port B Data IO/M 3-to-8 Decoder DO FIGURE 5.19
23. In Figure 5.19, identify ports A and B as input or output ports. 24. In Figure 5.19, what are the addresses of ports
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23. In Figure 5.19, identify ports A and B as input or output ports. 24. In Figure 5.19, what are the addresses of ports
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