Homework10 - CprE 488 Embedded Systems Design Homework 10 Fall 2006 Name Brad Smith Lab Section Tuesday 1[15 In each circumstance below would

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CprE 488 Embedded Systems Design Homework 10, Fall 2006 Name: Brad Smith Lab Section: Tuesday 1. [15] In each circumstance below, would shared memory or message passing communication be better? Explain. a. A cascade set of digital filters. Shared Memory. You want each filter to affect the next one immediately. b. A digital video decoder and a process that overlays user menus on the display. Message Passing. You want to stack requests rather then change them immediately. c. A software modem process and a printing process in a fax machine. Message Passing. You want to stack requests rather then change them immediately. 2. [10] Q6-30. Draw a state diagram for the predictive shutdown mechanism of a pager. The pager wakes itself up once every five minutes for 0.01 second to listen for its address. It goes back to sleep if it does not hear its address or after it has received its message. 3. [15] Q8-2. Describe an I 2 C bus at the following OSI-compliant levels of detail: a. Physical I²C uses only two bidirectional lines, serial data (SDA) and serial clock
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This note was uploaded on 03/27/2008 for the course CPRE 488X taught by Professor Zhang during the Spring '08 term at Iowa State.

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Homework10 - CprE 488 Embedded Systems Design Homework 10 Fall 2006 Name Brad Smith Lab Section Tuesday 1[15 In each circumstance below would

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