A dairy factory uses an 8255 PPI card at base address 5000 H. a) Explain how port address is changed with the change in address lines of 8085 connected with 8255. b) How do you initialize a control word for 8255? c) Write a program to read data from port B and display at port A and also, data from port Cu to CL.

A dairy factory uses an 8255 PPI card at base address 5000 H. a) Explain how port address is changed with the change in address lines of 8085 connected with 8255. b) How do you initialize a control word for 8255? c) Write a program to read data from port B and display at port A and also, data from port Cu to CL.

Electric Motor Control

10th Edition

ISBN:9781133702818

Author:Herman

Publisher:Herman

Chapter22: Sequence Control

Section: Chapter Questions

Problem 6SQ: Draw a symbol for a solid-state logic element AND.

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