“Interazione uomo-macchina” - Alan Dix‚ Janet Finlay‚ Gregory D. Abowd‚ Russell Beale Answers for tutors and extra exercises 1. The human EXERCISE 1.4 What are mental models‚ and why are they important in interface design? answer available for tutors only Mental models are the theories people build to understand the causal behaviour of systems. These are often partial‚ unstable and subject to change. They may be internally inconsistent. They may be superstitious and based on incorrect interpretation
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History of Computer Nikita Rechal1 and Sooriyan Aliyoglu2 1Department of Computer Engineering‚ Castle University‚ New City‚ Cyprus a.orther@xx.yy.zz 2MediDeniz Software‚ Old Street‚ New York‚ USA a.etherwen@zzz.com Abstract Computers have wedged themselves into every facet of our lives—they are what we would use as the symbolic representation of the modern world. But did you know that the history of computers dates back to the 1800s?Indeed‚ the history and evolution of computers is quite extraordinary—and
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From the desk of Chris Minich Jr. Re: Purchase of new computers Three of the desktop computers that are currently being used by our clerical workers are getting to the point where they are slow‚ have reached internal storage capacity and are generally out of date. To continue to be competitive in the marketplace they will need to be replaced. These three computers all have internal hard disks with 50GB of storage capacity or less‚ have processors running at speeds of less than 2GHz‚ have less than
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whether to go to the party or not. (made) 12. A lot of pupils at school have got flu. (gone) 13. I don’t think Jane’s story about meeting the President was true. (made) 14. At the start of the fire‚ no one seemed very worried. (broke) 15. The computer system has caused quite a few problems for us. (come) 16. There isn’t enough space in this room for a big cupboard. (take) 17. It has always been her ambition to write a successful novel. (dream) 18. She won the first match easily and then became
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Final Exam Review: QUESTIONS 1. The “von Neumann bottleneck” refers to a limit on throughput between _____________. 2. Bardeen‚ Brattain‚ and Shockley received the Nobel Prize for inventing the __________. 3. N-type silicon __________________. 4. The first IBM PC used the __________ microprocessor. 5. What is the decimal number 36 converted into binary? 6. What is the binary number 11111 converted into decimal? 7. What is the largest decimal number
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Types of computers Firstly‚ what is a computer? Well‚ a modern computer is typically an electronic or digital device that manipulates data. Computers can execute a pre-recorded list of instructions know as a “programme”. Large amounts of data can be stored on computers and be quickly accessed‚ edited and stored. When it comes to computers there are several different types: * High Performance System (HPS) * Workstations * Personal Computer * Laptop / Notebook * Palmtop These
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Second Generation Computers (1956-1963) The computers built in the 1950s and 1960s are considered the 2nd generation computers. These computers make use of the transistors invented by Bell Telephone laboratories and they had many of the same components as the modern-day computer. For instance‚ 2nd generation computers typically had a printer‚ some sort of tape or disk storage‚ operating systems‚ stored programs‚ as well as some sort of memory. These computers were also generally more reliable
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Supercomputer Supercomputer is a broad term for one of the fastest computers currently available. Supercomputers are very expensive and are employed for specialized applications that require immense amounts of mathematical calculations (number crunching). For example‚ weather forecasting requires a supercomputer. Other uses of supercomputers scientific simulations‚ (animated) graphics‚ fluid dynamic calculations‚ nuclear energy research‚ electronic design‚ and analysis of geological data (e.g.
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Computer Crime Computer crimes need to be prevented and halted thought increased computer network security measures as well as tougher laws and enforcement of those laws in cyberspace: Computer crime is generally defined as any crime accomplished through special knowledge of computer technology. All that is required is a personal computer‚ a modem‚ and a phone line. Increasing instances of white-collar crime involve computers as more businesses automate and information becomes an important
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Study Notes Computer Awareness Quick Revision Notes The earlier computers‚ which were massive in size‚ were based on vacuum tubes. 2. Early computing machines‚ like the ENIAC‚ were actually meant to assist the armed forces. 3. The printers in pre-1950s were punch cards. 4. An improvement on the ENIAC‚ which pioneered ’stored program’‚ was made possible with the help of the mathematician John von Neumann. 5. Before the 1950s‚ computers were mostly owned by universities and research labs
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