1. A 7-segment display set of eight is interfaced with 8255A IC as in Fig.1. Comments onlig FOND FOWR PAD PA PAD PAD PM

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1 A 7 Segment Display Set Of Eight Is Interfaced With 8255a Ic As In Fig 1 Comments Onlig Fond Fowr Pad Pa Pad Pad Pm 1 (49.27 KiB) Viewed 49 times

1. A 7-segment display set of eight is interfaced with 8255A IC as in Fig.1. Comments onlig FOND FOWR PAD PA PAD PAD PM PAS PM Segment Driver | !! Common Cathede 8255A 429 A5 A4 A3 o loco 2 & Fig.1: 7-segment display interfaced with 8255 1. Find addresses of ports. ii. Find control word iii. Write an assembly language program to show UOHB 2019. 2. An 8255 PPLIC is supposed to be interfaced with the 8086 microprocessor to work as an input-output port. Port-A is connected to 8-bit binary switches, Port-C (PCS-PC-) to a 7-segment display and port-B to eight LEDs. Addresses of port-A, Port-B, Port-C and Control Register are 8078H, 807AH, 807CH and 807EH respectively. i. Draw the hardware connection diagram, ii. Find the control word, iii. Write an assembly language program to read the switch pattern and turn on the LEDs with same pattern accordingly. Also find the number of OFF switches and show the number on 7-segment display.