The International School Seychelles
IGCSE
Computer
Studies
CIE 0420
Theory Notes
Contents
1
Applications Of Computers, Their
Social & Economic Implications................................ 1
1.1 The Range And Scope Of Computer
Applications ............................................................................. 1
1.2 The Social And Economic Implications
Of The Use Of Computers....................................................... 3
2
System Analysis ......................................................... 6
2.1 Systems Analysis ................................................................... 6
3
Problem Solution, Algorithm
Design & Programming Concepts............................. 8
3.1 Making An
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In forecasting systems, predictions are made about the future based on previous data, and a model of how the system works.
Weather Forecasting
Computer-aided design
try to predict weather, taking data from sensors, using computer models of weather systems
(CAD) designs for objects can be designed, altered and tested within the computer, prior to manufacture
Monitoring And Control Systems
A computer is used to monitor a system through the use of sensors (such as light, heat, etc.) The computer can then operate devices to control the system (such as pumps, valves, etc.)
Monitoring hospital patients checks heart rate, etc. setting off an alarm if low
Nuclear power station control monitors temperature, etc. and adjusts coolant
Traffic survey and control checks the number of cars, alters traffic light timings
Automation And Robotics
The use of computers to control other mechanical devices. Usually requires some sort of interface which allows the computer to receive data from input sensors, and to control output devices such as motors.
Domestic automation
Automatic navigation
Industrial robots
washing machines, microwaves aircraft, ships, cars (GSM satellite navigation) used to work on manufacturing lines. Can work non-stop,
24 hours a day, 365 days a year. Can work in hazardous areas Expert Systems And Artificial Intelligence
Artificial Intelligence (AI) is the attempt to simulate the human brain, and its
Electronic monitoring is another widely used form of surveillance in which an electronic device is attached to an offender's body, warning that person that
Recent studies show that careers in the computer field are still hot. The fact is that the computer technician is one of the highest trending careers in the computer industry. The computer technician is part of the support team in the IT department of a company. They have the important task of maintaining the computer systems or making necessary installations. The fact is that the computer technician is a very highly skilled individual that is highly sought after. Today, the best opportunities for those in this field are for those individuals with a degree in computer science, computer engineering, or certification in IT systems. Wondering how much computer technicians make? Perhaps, you wonder how much does a computer technician make an hour.
Yes, cost-benefit is a legitimate tool. “Cost-Benefit Analysis (CBA) estimates and totals up the equivalent money value of the benefits and costs to the community of projects to establish whether they are worthwhile” (An Introduction to Cost Benefit Analysis). But cost benefit analysis is just for calculating the benefit of the company, in a mathematical way. It shouldn’t play in moral deliberation, there is no way to calculate human life or we can say as the potential that human have. We also can see that there is unsatisfactory about the cost-benefit analysis simply by measuring only the benefits of Ford it’s own. In this case, cost-benefit analysis should improve by adding other stakeholder benefit to produce a “win-win”
Everytime Adobe Acrobat releases an update my computer pops up with a nessage asking if I want to update it now or later. It also gives me the option to check a box for automatic updates (updating without asking my permission). I am not required to provide a disk or file.
Dr. Randy Pausch, a professor of computer science at Carnegie-Mellon University who was diagnosed with pancreatic cancer, educated me with his powerful inspirational message. Dr. Randy Pausch, 47 years old man who has terminal cancer with a life expectancy of a few months gave me a life lesson. He thought me how to achieve dreams also how to face death. Being diagnosed with any kinds of cancer is devastating and despairing, but for him it was opposite; he was happy and cognitively healthy during his final lecture at Carnegie-Mellon University. He even said, “If I don 't seem as depressed or morosed as I should be, sorry to disappoint you” (Video) and continued lecturing. He hadn’t show any sadness or depression during his lecture
P1 – Summarise accurately the principles of interactive media authoring with some appropriate use of subject terminology.
In our recent negotiation, my partner Dave and I assumed the roles of Alan Hacker, a computer software developer, and Alan Hacker’s lawyer. Being the lawyer in the negotiation my objective was to avoid litigation with my client’s partner Stanley Star and to aid in the continuation of my client’s co-owned company HackerStar. In addition, I would assist Hacker in coming to an agreement that would be satisfying for him both personally and financially. I felt that Dave and I presented a reasonable argument on Hacker’s behalf and, since I was able to apply some of our class readings during the process, I was overall pleased with the outcome.
Mobile computing is growing at an extremely rapid rate and you can see it everywhere you go. You are probably doing it yourself multiple times a day and don’t even realize it. Phones, laptops, tablets, cloud storage and wireless networks that we use everyday are just a few elements of mobile computing. A survey listed by Bowles states that 26% of smartphone users makes them feel like they are being more productive than without them. (Bowles 2013) I can remember taking typing class in high school and now almost every school in America issues tablets to their students.
The Ford Pinto case in (Shaw, Barry & Sansbury 2009, p97) stated that Ford decided to continue produce the Pinto without making an improvement regardless of consumers’ safety because its prototype tests did not meet the safety requirement of the National Highway Traffic Safety Administration. They should not put the value of money prioritise than human life. Firstly, they decided to sell it instead of making an improvement. Next, they were dishonest because they did not dispose it out to outside world about the dangerous of the Ford Pinto and tried to keep for secret. Besides, they used their lobby power
Ctrl + S: Save, is used to save a document, quicker and faster without using a mouse.
This aim of this document was to provide a summary and definition of the concept of Information Systems and contrast the subject against Information Technology. As part of this I have defined systems and I then have offered some brief commentary on how IS has changed over the last hundred years or so.
Computer Systems analyst focus on an organization’s present computer systems and processes and purposes information systems resolutions to assist the organization function more professionally and efficiently. They bring business and information technology together by understanding the necessities and limitations of both. They bridge the communication and indulgent gap among the IT department and business management, help each side understand each other’s proposals, outlooks and restrictions, improving inclusive business efficiency. Computer systems analyst careers engross researching and studying new technologies, they evaluate the expenditures and settlements to the company to help organization determine if the technology would expand business
Permanent storage devices are nonvolatile—that is, their contents are persistent and are retained even when power is lost.
In this report I am going to be covering the differences between policies and procedures, including what they are like Procurement, Costs, Helpdesk and Reporting, Tend Analysis, Problem Escalation, Disposal Policy, Health and Safety and PAT Testing and then I am going to talk about why these are important and what dangers could impact on the policies and procedures if the following are not done.
Sequence in programming is when an event or action takes place in the program leads to another action which has been ordered, also none of these can be skipped.