Page 130 - DCAP210_INTRODUCTION__TO_MICROPROCESSORS

Introduction to Microprocessors

Notes 4. Port-mapped I/O uses a special class of CPU instructions specifically for performing I/O.

(a) True (b) False
5. A peripheral device that assigns specific memory locations to input and output.
(a) True (b) False

8.8 Review Questions

1. Explain advantages and disadvantages of interfacing.
2. What do we mean by direct memory access?
3. What is DMA?

4. Distinguish between Ports mapped vs. memory mapped I/O.
5. What is interfacing of memory and IO?
6. What are the advantages of memory mapped IO?
7. What is the need of memory interfacing in microprocessor?

8. What is the difference between memories and mapped I/O?
9. What are I/O devices interfacing?
10. Explain the graphical user interface.

Answers for Self-Assessment Questions

1. (a) 2. (b) 3. (d) 4. (a) 5. (a)

8.9 Further Reading

Microprocessors and its Applications, A.P.Godse, D.A.Godse

http://www.zap.org.au/elec2041-cdrom/unsw/elec2041/experiment4.pdf

124 LOVELY PROFESSIONAL UNIVERSITY