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Computer Science Unit 1- Fundamentals of Computer Science

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Title: Computer Science Unit 1- Fundamentals of Computer Science


1
Computer ScienceUnit 1- Fundamentals of Computer
Science
  • Module 1-

2
Course Information
  • Text
  • Understanding Computer Science for Advanced Level
    By Ray Bradley
  • Software
  • DevCpp Click to Download compiler

3
Course Assessment Information
  • Paper 1 30 (1 hour and 30 minutes)
  • Examined on each module of syllabus total 45
    marks
  • 45 multiple choice items
  • Paper 2 50 (2 hours and 30 minutes)
  • Examined on all sections of syllabus total
    150 marks
  • Six compulsory structured questions
  • Section I -two from module I (50
    marks)
  • Section II-two from module II (50
    marks)
  • Section III-two from module III (50
    marks)
  • Paper 3 20 (IA)
  • Examined on modules 2 and 3 total 60 marks

4
Information technology
  • Information Technology (IT), is the term used to
    describe the equipment, hardware and computer
    programs (software), that allows us to access...
    and present data and information (Gay and
    Blades, 2005).
  • Information Technology is the integration of
    various computing tools used for information
    processing within todays society. It is mostly
    an adventure into how we conduct business and how
    we live our lives (Long, 2005).
  • Additionally, we can view IT as a field of study
    in which we learn how best to remain competitive
    in society with inventions as well as attain
    vocational and life-lasting skills to use these
    inventions.

5
Computer Science
  • The study of the design and operation of
    computer hardware and software, and of the
    application of computer technology to science,
    business, and the arts. (The American Heritage
    Science Dictionary, 2005)
  • Computer science is composed of many broad
    disciplines, including artificial intelligence
    and software engineering.

6
Hardware Components
  • Part 1 - Overview

7
Computer Architecture Organization
List how computers are used in your every day
life.
8
Computer Architecture Organization
Various uses
Some common uses of computer may include
entertainment, education, banking and
investments, shopping, research information,
collaboration and communication
9
Computer Architecture Organization
  • Regardless of the respective uses we may find for
    computers, they will contain most, if not all,
    the following traits
  • Communication Consistency
    Reliability
  • Storage Speed
  • Additionally, as we use computers, we consider
    its
  • Impact on the environment Impact on
    labour force
  • Violation of privacy
    Risks to health

10
Computer Systems
  • Technically, a computer is any counting device
    more specifically, it is...an electronic device
    capable of interpreting and executing programmed
    commands for input, output, computation, and
    logic operations (Long, 2005).
  • Consequently, we can consider the computer system
    as a set of components that interact to achieve a
    common goal. The purpose, therefore, of a
    computer system is to use all its working
    components to produce quality information

11
Computer Architecture Organization
  • For each of the following, highlight at least two
    means by which we use computers
  • Information systems/data processing systems
  • Personal computing
  • Science, research, and engineering
  • Process/device control
  • Education
  • Entertainment
  • Artificial Intelligence

Speed Reliability Consistency Accuracy Storage Com
munication
12
Computer Architecture Organization
  • Types of computers

13
Computer Architecture Organization
  • Types of computers

Personal computers The two most popular personal
computers are PC (Windows, Linux) and Apple
Macintosh (Mac OS). Desktop computers are so
described because their components are designed
to fit on or under ones desk
14
Computer Architecture Organization
  • Types of computers
  • Mobile computers and mobile devices
  • These technologies are small enough to carry
    around in ones pocket such devices usually are
    internet enabled

15
Computer Architecture Organization
  • Types of computers

Midrange servers Powerful, large computer that
supports up to a few thousand computers. Mainfram
e Very powerful, expensive computer that supports
thousands of computers. Supercomputer The
fastest, most powerful, most expensive computer.
Used for applications requiring complex
mathematical calculations.
16
Computer Architecture Organization
  • Types of computers

Embedded computer Typically, these computers are
special-purpose computers, with functions that
are part of a whole system.
17
Computer Architecture Organization
  • Computer system components
  • A computer system has only four fundamental
    components
  • Inputhandles the gathering of data
  • Processingtransformation of data to information
  • Outputhandles the dissemination of processed
    data
  • Storagesafe keeping of information for future
    use
  • Note The computer system (and not the computer)
    is made up of four components.

18
Computer Architecture Organization
  • An input device is any peripheral device that
    allows one to enter data or instructions into a
    computer.

List five input devices ?
19
Computer Architecture Organization
  • An output device is any peripheral device that
    conveys information to one or more individuals.

List three output devices ?
20
Computer Architecture Organization
  • The processor is the electronic component that
    interprets and carries out instructions to
    operate the computer system (which resides on the
    motherboard)..

21
Computer Architecture Organization
  • Storage components hold data, instruction, as
    well as information for future use these items
    are kept on storage media (which are housed
    within the system unit).

List three storage media ?
22
Overview Not Enough
  • Regardless of the fact that we now have an
    general idea of the basic components and the
    functions of a computer system, this overview is
    not enough to provide us with thorough
    understanding of each component.
  • We then seek a comprehensive understanding of
    each component of the computer system by
    determining how important each element is.
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