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So far we have considered the problems of poor ID in terms of the loss of productivity and efficiency to business. There is another important aspect to consider: the issue of safety, both for the user of interactive products and for the general public. Safety can be severely compromised by poor ID, with potentially serious consequences.
Systems in which human or environmental safety is of paramount concern include cars, aircraft, air traffic control consoles, nuclear power plants, control systems and medical devices. TheDaythePhonesStopped (Lee, 1992) provides scare stories demonstrating the importance of ID for safety-critical systems. Box 4 gives a few snippets taken from this book. The examples in Box 4 should have convinced you of the importance of good ID. But if you have found it difficult to relate to these 'catastrophic' examples, there are many less disastrous but stillproblematic examples that may be more familiar to you. For example, when I am driving in fog it can take me a few moments to locate my car's fog light button, because I only use it occasionally and it is partially obscured by the steering wheel. During these moments I am distracted, and this could result in an accident.
Now read the article in Box 5. This article was written by Don Norman, a cognitive psychologist and leading ID expert. He originated many of the concepts in this unit. I have included the article here because it addressesani mportants afety-related applicationdomainwithwhich you will probably be familiar. I hope this reading will demonstrate to you the importance of the issues contained in M364 in an accessible manner. Whilst reading this you should recall that designing the user interfaceis an aspectofID.
What is swapping? A process can be swapped out temporarily of memory to a backing store and after that brought back in memory for execution as continued.
It takes away two constraints which were holding back Web developments: 1. Dependence on a one, inflexible document type (HTML) which was being much abused for tasks it was neve
how to write this program,what are the declaration and function are needed in java program in java // aakash , suraj , prem sasi kumar kamaraj college program 1 : pack
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Error handling in Hard disk in computer architecture : Modern drives also make widespread use of Error Correcting Codes (ECCs), specifically Reed-Solomon error correction.
A doubly linked list is like a linked list except that each node has a pointer both to the next node in the list and to the previous node in the list. There are also pointers to th
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what are data structures
Q. Explain about fundamental nature of a Computer? The fundamental nature of a Computer is as an information transformer. So a computer should be able to take input and process
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