Flashcards
Computing 1
Flashcards do conjunto (25)
- 1What is a computer system?A computer system is a collection of hardware and software that works together to complete a kind of data processing task.
- 2Give three reasons why computer systems are important.- it allows new ways of communicating
- improved quality in manufacturing
-faster access to information - 3Explain two examples of a computer system.A satnav is given a destination as an input and directs you to this place as an output. It will process your input by checking the location on a map. An ATM will receive your card as an input, process the pin you are entering and give you money as an output.
- 4Name two input and output devices on a digital camera.The button and the microphone. The flash and the screen.
- 5What are the difference between General Purpose, Dedicated and Control systems?GP systems are used personally and are common and can perform a variety of tasks . Dedicated systems are used for a specific task or reason such as a ticket machine. Control systems are under management and are mostly used in manufacturing.
- 6What is an embedded system?A computer system that is part of a larger system.
- 7Name one advantage and disadvantage of an expert system.An advantage is that the knowledge it knows is more suited to you preference. A disadvantage is that the knowledge is only a narrow range.
- 8Give two uses of an expert system.To give a medical diagnosis or find an engineering fault.
- 9State the three main components of an expert system.A knowledge base, an inference engine that can make deductions with the information it has and an interface so a human can interact with the computer system.
- 10What is data integrity?This refers to the data being reliable and accurate.
- 11How can data integrity be compromised and how can you reduce this risk?Bugs and viruses can affect data integrity but backing up data regularly and using anti-virus software can prevent this from happening.
- 12Why can testing never be complete?Software is too complicated and testing is time consuming and expensive.
- 13State two ways that computers are used in medicine.-Diagnosis of diseases
- Record keeping - 14State two categories that standards apply to.-Programming Languages
-Operating Systems - 15Give three reasons why standards are important.Standards enable equipment from different manufacturers to work together and make learning new systems easier. They also reduce costs.
- 16What are De Facto standards?Theses standards develop over time and are important as they make file and systems accessible by anyone (QWERTY keyboard, Microsoft Word).
- 17What are De Jure standards?These standards are by law and allow communication because they have become universally accepted( ASCII).
- 18What are proprietary standards?This is standards that are owned by a company and there products are only compatible with the companies other products such as Apple.
- 19What are industry standards?These are companies that make standards for specific thing such as a programming language ( ANSI sets standards for programming language).
- 20What are open standards?Open standards are publicly available and have been produced collaboratively. They do not dominate one interest group and have no or little cost.
- 21What is the difference between a legal and ethical act?An ethical act is one that is morally right whereas a legal act is one that doesn't break any laws.
- 22State three provisions about a typical Data Protection Law.-Allow people to view the data held about them
-Only use data for a specified and lawful purpose
-Not use data in a way that may potentially cause damage or distress - 23What is cyber crime?A crime committed with the aid of computers.
- 24State two reasons why the diposal of computers are an environmental problem.The toxic waste is released into the air and there is a waste of materials.
- 25State four ways in which energy can be saved in a data centre.-Solid state storage uses less energy than other storage
-Setting the air con at an optimum level
-modern screens that are less energy intensive
-having a standby mode on the computers
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- Locl/B Computing FlashCards sobre Computing 1, criado por Fin.xx em 17-04-2016.
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- Fin.xx
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