i) Describe the all pins of 82C55 programmable interface (PPI) IC. ii) Define command byte A & B of the command register in the 82C55 IC. iii) Draw the proper circuit diagram of an 8-digit LEĎ display interfaced to 8088 microprocessor through an 82C55 IC. Contrast and describe a memory-mapped I/O system with an isolated I/O system. What logic levels must be applied to AEN and RDY1 to obtain a logic 1 at the READY pin?
i) Describe the all pins of 82C55 programmable interface (PPI) IC. ii) Define command byte A & B of the command register in the 82C55 IC. iii) Draw the proper circuit diagram of an 8-digit LEĎ display interfaced to 8088 microprocessor through an 82C55 IC. Contrast and describe a memory-mapped I/O system with an isolated I/O system. What logic levels must be applied to AEN and RDY1 to obtain a logic 1 at the READY pin?
Computer Networking: A Top-Down Approach (7th Edition)
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a) b) c) Please see the image below to answer
![a)
i)
Describe the all pins of 82C55 programmable interface (PPI) IC.
ii)
Define command byte A & B of the command register in the 82C55 IC.
iii)
Draw the proper circuit diagram of an 8-digit LED display interfaced to 8088
microprocessor through an 82C55 IC.
b)
Contrast and describe a memory-mapped I/O system with an isolated I/O system.
(-
What logic levels must be applied to AEN and RDY1 to obtain a logic 1 at the READY
pin?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fb4db1a45-5f50-4137-9f84-6122f9c26461%2F63bdd8ec-bb34-4a9e-9b97-26480f6236db%2Fe71s0xl_processed.png&w=3840&q=75)
Transcribed Image Text:a)
i)
Describe the all pins of 82C55 programmable interface (PPI) IC.
ii)
Define command byte A & B of the command register in the 82C55 IC.
iii)
Draw the proper circuit diagram of an 8-digit LED display interfaced to 8088
microprocessor through an 82C55 IC.
b)
Contrast and describe a memory-mapped I/O system with an isolated I/O system.
(-
What logic levels must be applied to AEN and RDY1 to obtain a logic 1 at the READY
pin?
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