SOLVED: b) An 8255 IC interfaced with the 8086 microprocessor works as an Input-output port as shown in Figure 1.Data Bus Port-A8switchesA2A08Port-BLEDsA3A1 8255U2A5 A6 A7Port-C47-segment Display74LS138 4 G1 G2A G2BCSA15 A14 A0PGFigure 1: Connection diagram of 8255 ICFind the addresses of ports and control register. (3)Find the control word. (2)Find the value of N to load on counter for 100 ms delay if clock frequency is 10 MHz. (5)Write an assembly language program to read 8-bit switch pattern,
SOLVED: b) An 8255 IC interfaced with the 8086 microprocessor works as an Input-output port as shown in Figure 1.Data Bus Port-A8switchesA2A08Port-BLEDsA3A1
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