Microprocessors and Embedded Systems Quiz

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Questions and Answers

What role have PCs played in the development of embedded systems?

Controlling the functions of embedded systems

Providing hardware and software for embedded systems (correct)

Serving as end-user programmable devices

Replacing microprocessors in embedded systems

What is the main purpose of an embedded system?

To control a function or range of functions (correct)

To provide hardware and software for PCs

To be easily programmed by end users

To function as a PC

Which of the following is NOT a reason for the widespread use of microprocessors?

Replacement for analogue circuits

Protection of intellectual property

End-user programmability (correct)

Enhancement of mechanical performance

Why are microprocessors widely used in embedded systems?

To replace discrete logic-based circuits Signup and view all the answers

What key function do embedded systems perform?

Controlling a specific function or range of functions Signup and view all the answers

What is NOT an advantage of using microprocessors in embedded systems?

End-user programmability Signup and view all the answers

What is a common characteristic of embedded systems?

They react to changes in the system's environment Signup and view all the answers

Which of the following is not a common design metric for optimizing embedded systems?

Durability Signup and view all the answers

What is the purpose of NRE cost in optimizing embedded system design?

To assess the one-time monetary cost of designing the system Signup and view all the answers

What does 'time-to-market' refer to in the context of optimizing embedded system design?

The time required to develop a product to the point it can be sold to customers Signup and view all the answers

What is the potential drawback of improving one design metric in embedded systems?

Worsening other design metrics Signup and view all the answers

Which component is not typically found in an embedded system like a digital camera?

Hard drive Signup and view all the answers

What is the average time-to-market constraint for an embedded system product?

8 months Signup and view all the answers

'Losses due to delayed market entry' graphically illustrates potential losses associated with:

Delay in bringing a product to market Signup and view all the answers

What does 'Maintainability' refer to as a design metric for embedded systems?

Ability to modify the system after its initial release Signup and view all the answers

What is meant by 'Peak revenue' as shown in 'Losses due to delayed market entry' graph?

The maximum revenue potential at the time of market entry. Signup and view all the answers

Study Notes

Microprocessors are used extensively in embedded systems.
Embedded systems are microprocessor-based systems designed to perform specific functions without end-user programming.
PCs have been a significant source of hardware and software for embedded systems.
Reasons for the widespread use of microprocessors: replacement of discrete logic-based circuits, provision of functional and maintenance upgrades, improvement of mechanical performance, protection of intellectual property, and replacement of analogue circuits.
Microprocessors consist of the processor, memory, peripherals, and software.
Embedded systems are single-functioned, tightly-constrained, reactive, and real-time systems.
An example of an embedded system is a digital camera, comprising of a CCD chip, CCD preprocessor, pixel coprocessor, D2A, A2D, JPEG codec, microcontroller, multiplier/accum, DMA controller, memory controller, display controller, and various interfaces.
Designing embedded systems involves optimizing design metrics such as unit cost, NRE cost, size, and performance, among others.
Common design metrics and their goals: unit cost (monetary cost of manufacturing each copy), NRE cost (one-time cost of designing), size (physical space requirement), and performance (execution time or throughput).
Time-to-market is a critical design metric, aiming to develop the product to be sold to customers within a given time constraint.
Delayed market entry can lead to significant financial losses.
The simplified revenue model for a product assumes a product life of 2W, with peak revenue occurring at the beginning of the market window, and average time-to-market being 8 months.

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Description

Test your knowledge about microprocessors, embedded systems, and their widespread use. Learn about the relationship between PCs and embedded systems, and the reasons for the extensive use of microprocessors. This quiz covers fundamental concepts in the field of embedded systems.