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    Computer Studies Course for Rusty Readers
    Computer Studies Course for Rusty Readers
    Computer Studies Course for Rusty Readers
    Ebook99 pages1 hour

    Computer Studies Course for Rusty Readers

    By Titus Kamau

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    About this ebook

    A Computer Studies Course for starters who want to become Computer Savvy in less than 30 days of study. This eBook will teach you the basics of Computer lessons. Packages include Introduction to Computers, Microsoft Windows, Microsoft Word, Microsoft Excel, Microsoft Access, Microsoft Power Point, Microsoft Publisher and Internet/Email. Practical guidelines are also given. Enjoy reading!

    LanguageEnglish
    PublisherTitus Kamau
    Release dateMar 20, 2016
    ISBN9781311380968
    Computer Studies Course for Rusty Readers
    Author

    Titus Kamau

    Blogger, Freelance Journalist and Author from Kenya.

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      Book preview

      Computer Studies Course for Rusty Readers - Titus Kamau

      Introduction

      Anciently, people used many ways of communication and doing business. Information was relayed from one place to another through smoke signals, horning and even sending a messenger. Sending a messenger was the trickiest because many times the message was not received on time. The messenger could get exhausted or attacked by wild animals or other enemies on the way.

      Definition of a Computer

      A Computer can be defined as an electronic device for inputting, processing and outputting of data and information. It accepts data from the outside and processes it to produce information.

      A Computer can also be defined as a fast and accurate electronic device or data manipulation system that is designed and organized to automatically accept and store input data, process it and produce information under the direction of a guided step by step program of instructions.

      History of Computers

      The historical development of Computers is classified into various generations as shown below;

      1. 1940–1958 The Computers used a vacuum tube to process data. They

      Were very large

      Were very expensive

      Were very slow

      Were unreliable

      Needed extensive air conditioning

      2. 1959–1960 The Computers used transistors to process data. They

      Were less expensive

      Were more reliable

      Were smaller in size

      Consumed less power

      3. 1961–1970 The Computers used integrated circuits to process data. They

      Were much smaller in size

      Were faster

      Were more reliable

      Consumed less power

      Were capable of multitasking and multiprogramming

      4. 1971–1990 The Computers used large scale integrated chips to process data. They

      Were small in size

      Were much more faster

      Were less expensive

      Were user friendly

      5. 1990 to current The Computers use magnetic bubble to process data. The major achievement in this generation is development of the Internet Technology

      Parts of a Computer

      A system is a set of components that are designed to work together to achieve a specific goal. A complete Computer System is composed of three major components namely;

      Hardware – the physical or tangible components of a computer

      Software – the programs that run the Computer System. They instruct the computer on what to do, how and when to do it.

      Liveware / Orgware – the human part of the computer System i.e. the user or the computer Operator

      Hardware

      Computer Hardware enables the user to;

      a)      Enter information into the Computer

      b)     View the output on-screen

      c)      Print out the work

      d)     Store and process the information

      Computer Hardware can be classified into;

      -Input devices

      Input devices are communication links between the computer and its user. They accept external data and transmit in into a form that is understandable to the Computer. Examples of such devices are;

      *The Mouse (Manually operated user signal encoder) - is a hand held device that is used to issue commands and instructions into the Computer by activating certain spots on screen. It consists of two buttons, a rolling ball, an intelliwheel and a tail. 

      Common mouse terms and functions include;

           Pointing – it involves positioning the mouse pointer over an item e.g. point to the system clock to display date and time.

           Click – press and release the left button once. It selects an item

           Double click – press and release the left button twice in a rapid succession. It is used to open or display contents of double clicked object

           Right click – press and release the right mouse button once. It will display a floating menu/ pop up menu/ shortcut menu

           Dragging – point on an object, press and hold down the left mouse button, move to a new location then release

           Clicking out – pressing the left mouse button once and away from a selected item or menu to deselect or escape out of the menu

           Triple clicking – pressing and releasing the left mouse button thrice in quick succession. It has the effect of selecting a paragraph

           Right dragging – point an object, press and hold the right mouse button, move to a new location then release. A floating menu appears

           Hovering – clicking on an Icon and a short description appears

      *The Keyboard – It contains an array of keys. It is used to send a series of commands and text typed in at prompt by pressing the appropriate key or combination of keys. The keyboard consists of the following common keys;

            Typewriter keys – the A – Z keys used to enter or type textural material or data into the Computer. They are usually known as QWERTY keyboard keys

            Caps lock key – locks the keyboard to permanently produce the uppercase version of typewriter keys

            Space key – a long elongated key that inserts spaces between words or characters

            Enter key – marks the end of a line or paragraph and the beginning of a new line or paragraph

            Shift key – used together with the typewriter keys to give the opposite

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