Human resources: the humans operating the computers. Analysis of computer software that is performed without actually executing programs. An ethical issue. A social issue. 1.1.1 Identify the context for which a new system is planned Before a system is designed, it needs to be identified what the system should do. 23, 56 for exam percentages will check to see if the pass and fail messages are properly delivered. These layers are illustrated in the figure to the right. Advantage - May be able to find out things not apparent from interview or questionnaire, and are not biased. Topic 1 - System Fundamentals 1.1.1-7 Planning and system installation. Try introducing them bit by bit to let users get accustomed, A design award is not necessarily a usability award, Never let designers smoke weed when designing a system, Put all controls having similar functions in a group (‘save’ and ‘save as…’ buttons or the ‘close, minimize and maximize window’ controls). Printed manuals: manuals printed on paper and supplied together with the system. A group of two or more computer systems linked together via a wired or wireless communication medium. Those who are confident with computers have higher chances for success than those who don’t. Change ), You are commenting using your Facebook account. Testing in the first stage is often referred to as Alpha testing, while testing in the second stage is often referred to as Beta testing. Stands for "Software as a Service": The client does not run its own computer system to handle operations, but lends servers from the software manufacturer that are managed and maintained by the software manufacturer. He looks at the existing system and tries to observe how it works. Assessment Statement Teacher's notes Explanations & examples . Malware infections (e.g. Many factory jobs lost to automatization. Interesting topics can be pursued. LAN: Local Area Network. Used when there are tests that can't be accomplished by manual testing because they would consume too much time and resources. viruses, Trojan horses, spyware). This can involve entering the data manually, moving disk files from one folder (or computer) to another, database insert queries, developing custom software, or other methods. A data network designed to provide coverage for an entire town or city. Many systems will now come with user documentation such as tooltips and dynamic page content within the system itself. Software: the collection of programs and instructions that control the computer. A base for application software that helps the computer operate. Client: a computer accessing resources hosted by an other computer, the server. Interpersonal social skills might deteriorate because people spend too much time on social networks. The page consists of my personal notes, work and documents from … With a max word count per unit of 1500 words for MYP and 3000 for IB DP, you won't ever have to sift through unnecessary information again, just to … Is conducted when the software is close to being ready for release and has complete functionality and the developers believe that there are few to no errors. This is the coding phase. These include hardware, software, communications and people. The availability of a system to all people, regardless of disability or severity of impairment. Thorough and clear documentation will allow all users of a system to follow best practices for system use. In the IB (SL) Computer Science course you will be assessed in THREE ways + (group project). Topic 3 - Networks. Mergers are complicated! When the various computer layers are all brought together, each playing its own role, amazing things c… Download revision notes for Computer Fundamentals class 11 Notes Computer Science and score high in exams. Today, huge supercomputers are burning energy to handle the interpretation of voice commands on speech recognition systems like Siri. Used to compare the system requirements and functionality with other turn-key systems. Reasons for choosing IB Computer Science The number of jobs opening projected in 2018 for STEM (Science, Technology, Engineering and Math education) fields will reach 2.8 million and approximately half of these will be in the fields of Computer Science as … All of the data that used to be input into the old system now goes into the new one. System Development Life Cycle 5. Study 34 System Fundamentals flashcards from Spencer H. on StudyBlue. They test the interactions between units and the complete, integrated system. Identify the context for . This involves white-box and black-box testing. Is at the receiving end of a service in a client/server model networking system. Syllabus component (Teaching hours) [AHL/SL/Option] • Topic 1: System fundamentals (20 hours) [SL] Topic 2: Computer organization (6 hours) [SL] Topic 3: Networks (9 hours) [SL] Topic 4: Computational thinking, problem-solving and programming (45 hours) [SL] Topic 5: Abstract data structures (23 hours) [AHL] This is where the tests planned during the design phase are applied to check that the system works correctly. Performed by executing programs with a set of test inputs and comparing the results to expected outputs. Basic package is available at no charge to all IB accounts, and includes a corporate summary, charts and market scanners for related Industry and Sector. Change ). Results can be analysed with numerical methods. Describes the structure of an information processing program or other process. Alignment: Aligning the organisational goals with the new system? They evaluate the performance of a system while simulating the resource consumption equivalent to hundreds or thousands of simultaneously connected users. Off-the-shelf software ↔ Tailored software. Reservations can be made through the web-page of the hotel or via phone. This iterative process happens during the entire product life cycle. A great example is SAP. It allows the user to propose changes at the design stage. It focuses on the ease of use and learnability of human interactions with the system. Is it ethical to fire workers from a company because a computer system has been implemented that does the same job cheaper? Small changes may be able to be handles with maintenance (patches or minor updates for software systems). In decimal number system, the successive positions to the left of the decimal point represent units, tens, hundreds, thousands, and so on. However, the maintenance step is often let out because in maintenance you plan, analyse, design and implement changes, so the circle effectively begins from start again. Poorly defined requirements - The opportunity to get feedback on what the product needs to accomplish is lost. This is data that should not normally be accepted by the system - the values are invalid. Things cannot be automatically searched. Identify the context for which a new system is planned - before system is designed, ID what system should do ... (Microsoft Exchange vs. IBM Lotus Notes) Compare the implementation of systems using a client's hardware with hosting remotely (SaaS) In the case of very sensitive information of large companies like Google, information is often duplicated on servers separated by large distances and in different climates to reduce the chance of data loss due to environmental causes such as tornado or earthquake. A computer program or computer system is used by people who work in organizations. The type of input data that is not accepted, such as 'three', '3s'. Each layer, in itself, is not that complicated. One of the most popular character encoding sets. Their most basic function is to translate a domain name into its respective IP address. The process of designing a software application so that it can potentially be adopted to various languages and regions without engineering changes. All the reservations with customer, room and reservation details are stored in a database. A computing system is like an ogre, made up of many layers. Automated testing throughout development. A more detailed feasibility report can be produced at this stage, including a cost-benefit analysis. The last phase of the software testing process. It is very helpful to understand how people, computers, and organizations work together. Can an Ipad and Facebook replace face-to-face social interaction? Organisations are becoming more affected by the possible threats of networks. This would require an internet connection in order to access the documentation. Ts. Advantage - May save work if the problem has been solved efficiently by someone else. It usually measures ergonomics and accessibility of the system. systems, tell the time, and tu rn video c assette reco rders (VCR s) on and off, automo biles re gulate the flo w of Computer T raining Expert Solut ion Consult s Fundamen tals of Compu ter Studies Its consistent availability is its main advantage. Formal classes: users sitting in a classroom listening to an instructor who shows and explains how to use the system. They care connected by telephone lines or radio waves. IB Computer Science has the following characteristics: draws on a wide spectrum of knowledge; ... Review and system fundamentals: Click here for notes and homework: November 28 2016: Review and system fundamentals: Click here for notes and homework: November 22 2016: They can be updated in real time. An encompassing term that refers to all the physical parts that make up a computer, such as the motherboard, CPU, RAM, and power supply. Updates get installed automatically. 11.1 Uncertainties and errors in measurements and results; 11.2 Graphical techniques; 11.3 Spectroscopic identification of organic compounds; Higher level. This creates huge amounts of toxic electronic waste. Pilot projects? This is a file attached to the program which contains the documentation organised by topic. If workers delegate, will their laptops work in other departments? Firewall: a computer or software package monitoring and protecting the network traffic of a computer or computer network. Online support: Special web service hosted by the system’s developer to provide user documentation. Automatic updates: the system checks automaticall for updates over the internet from time to time. Structure charts: are diagrams representing the organization of a system, usually with showing the different parts in hierarchical order. Had the hotel relied on storing reservation details only on that hard disk, all the reservations would be gone now and the hotel would have no way of knowing who had a reservation or how much each of their customers owed. It is more expensive than a thin client as it needs a faster processor and more resources such as memory. Composed of a number of clearly defined and distinct work phases that are used by system developers to plan for, design, build, test, and deliver systems. Are there any ethical issues resulting, for example will the new system make people innecessare, leading to loss of jobs? System Fundamentals; Computer Organization; Comp Thinking / Data Structures (45hrs) HL Abstract Data Structures; HL Resource management; HL Control Systems; Option C Web Science. The new system is started, but the old system is kept running in parallel for a while. A computer system that has already been developed. b- Vent Pipes The drainage system should be designed to allow for adequate circulation of air within the system, thereby preventing the danger of siphonage or unsealing of trap seals under normal working conditions. It is an integrated system of hardware and software. The service provider has already built the infrastructure and the program, so all the developer has to do is write their program and display it. This concerns the human body's response to physical and physiological work demands. the repetition of the design cycle in order to develop systems. Based on this, he proposes a new system to be created that should work better than the old one, increasing productivity. The computers are geographically close together in the same building. Web Science Review; programming exercises; python; Guide/Exams. Is performed on the source code. Making hard copies: In some cases, information can also be printed out to be archived, like books, texts, important contracts or scientific papers. All of the data that is input into the old system is also input into the new one. Used to test online services. This type of training is useful to train large amounts of staff as it is effective and relatively cheap, but if the size of the classes is too big, there is little time to deal with individual problems and questions. Change ), You are commenting using your Google account. An application usually installed on dedicated hardware that stores incoming mail for distribution to local users and sends out out outgoing messages. However creating hard copies can be expensive and take up a large amount space. 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