Embedded Systems|Quick homework help

Posted: January 22nd, 2023

Homework Content

For each of the following examples, determine whether this is an embedded system, explaining why or why not. 

Question 1 Are programs that understand physics and/or hardware embedded? For example, one that uses finite-element methods to predict fluid flow over airplane wings?

 
Question 2 Is the internal microprocessor controlling a disk drive an example of an embedded system? 

Question 3  Is an I/O drivers control hardware, so does the presence of an I/O driver imply that the computer executing the driver is embedded?

 
Question 4 Is a PDA (Personal Digital Assistant) an embedded system? 

Question 5 Is the microprocessor controlling a cell phone an embedded system? 

Question 6 Is the computer controlling a pacemaker in a person’s chest an embedded computer? 

Question 7 List and briefly define the possible states that define an instruction execution. 

Question 8 List and briefly define two approaches to dealing with multiple interrupts.

 
Question 9

Consider two microprocessors having 8- and 16-bit-wide external data buses, respectively. The two processors are identical otherwise and their bus cycles take just as long. 

(a) Suppose all instructions and operands are two bytes long. By what factor do the maximum data transfer rates differ? 

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(b) Repeat assuming that half of the operands and instructions are one byte long. 

SOLUTION
Embedded systems are computer systems that are integrated into other devices or products, and are designed to perform specific tasks. They are often used in consumer electronics, industrial control systems, and other applications where small size, low power consumption, and a high level of performance are required. Embedded systems can be based on a variety of microprocessors and microcontrollers, and can be programmed using a variety of languages and tools. Some examples of embedded systems include cell phones, cars, and smart home devices.

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