Exploring the toolbar

Screen Features

CorelDRAW Application Window

When you launch CorelDRAW, the application window opens containing a drawing window. The rectangle in the center of the drawing window is the drawing page where you create your drawing. Although more than one drawing window can be opened, you can apply commands to the active drawing window only.

The screen features of CorelDRAW application window appears below;

Mricosoft Office Word

Microsoft Office word is called word, Winword, sometimes even Word Processor. Word processing: This refers to the usage of computer to either produce text or affect changes on already produced text. The text used here could be in form of documents such as letters, reports, memos and books. It also has to do with the arrangement of text in a form that can be used at anytime.

Importance of Word processor

The following importance are attached to word processor:-

·         Word processor enables you to write text on page.

·         Graphics can be used for more comprehension.

·         Errors are corrected with ease at the point of detection.

·         Text can be saved for a long time.

·         Allows for text formatting.

·         More copies of a document can be produced.

·         Create neat work

·         Mail merging is possible.

How to start  Microsoft Word

Loading the program with Mouse

i.                   Locate the Start Menu at the bottom left of your screen.

ii.                 Click on the start Menu.

iii.               When the start menu appears, select programs

iv.            When the program menu appears select Microsoft Word.  

Alternatively you can load you Microsoft Word using the keyboard

Loading the Program with Keyboard

·         Press the Window Key on the Keyboard once.

·         The program menu will appear

·         Now use the arrow keys on your Keyboard to select

·         Press the Enter Key on the keyboard.

Microsoft Office Word 2003

After loading the program successfully either with mouse or with the keyboard, the window will be displayed shown below.

Characteristics of Computer

FEATURES OR CHARACTERISTICS OF COMPUTER

By features or characteristics of computer here we refer to certain peculiarities among computer. The following are the features of the today’s computers.

i.                  Accuracy: Computers are very accurate, errors only occur if there is an error in hardware, software or data. When errors occur, it is usually because of some human error since computers can only do what they are programmed to do thus, the output from a computer is always accurate and dependable when both the input data and the processing program are correct.

ii.               Storage Capability: Computers have very large memory of storage capability. Some computers can store billions of characters in small magnetic materials of the size of a mobile handset. New materials like CD-ROM and high capacity hard disks makes it possible for computers to keep large data now and make it as well possible to transfer large data with ease.

iii.            Speed: The speed of computer is measured in megahertz (MHz), that is millions of cycle per second. This makes it possible for it to process at faster rate. This is necessary for producing weather forecasts, performing scientific research and even producing thousand of bills for utility companies.

iv.             Versatile: One of the  characterisics of computer is versatility. Computer can be used for different jobs. As a result, computer usage fit into  any organization such as schools, hospital, banks etc.

v.                Continuous Working:  Computer can work continuously for a long period without much maintenance.

Importance of Computer, Advantages and Disadvantages of Computer

i.              Computer can be used as a medium communication

ii.             It can analyze numeric functions

iii.            Can be used for electronic mail

iv.           Computers are also used for research purposes

v.            Used for planning

vi.           Computer are used for designing document such as memo

vii.          Computer are used for entertainment

viii.        Computer are also used for calculation purposes

Advantages of Computer

a.    Network  is obtainable i.e. linking of two or more computers.

b.    It has the ability of storing many data.

c.     There is a lot of ease while using computer to machine like typewriter.

d.    It has speed when processing data

e.    Computer create possibility for distance learning

f.      It in some instances serve as medium for security 

g.    It gives pleasure.

Disadvantages of Computer

a.    It involves high cost of operation

b.    It can be used to defraud an organization

c.     There is complexity in the use of computer

d.    It expose teenagers to phonographic life

e.    Cost of acquiring computer knowledge is high

Input and Output Devices

INPUT UNIT: This comprises of keyboard, mouse and scanner

i. The Keyboard

The keyboard is a tool that is used for typing like a typewriter. Of course, it has more functions than the typewriter. Different keys on the keyboard perform varying functions and include;

A Standard Keyboard  

   1.    Alphanumeric

   2.    Control keys

   3.    Cursor keys or arrow keys

   4.    Numeric keys

   5.    Function keys

Alphanumeric Keys

As the name implies, alpha refers to alphabet and numeric refers to number. Alphanumeric contains both alphabet and numbers. Alphabet are A-Z, and numbers 0-9. apart from alphabet and numbers other keys are associated with these type of keys and include; Shit, Enter, Space, Caps lock, Tab Back space keys.

Functions Keys

These are additional keys on the key board for special usd under operating system and application programs. The keys contained here are F1, F2, F3, F4, F5, F6, F7, F8, F9, F10, F11, and F12.

Numeric Keys

Found at the right hand side of the keyboard, the numeric keys are numbered 0-9 and are used when input are in their numeric form.

Control Keys

Control keys do not have a specific place on the keyboard. They are found on the keyboard  and include; Insert, delete, end, Esc, Print Screen, Scroll Lock, Pause, Home, Page Up, Page Down, Control, Alt, and Num Lock.

Cursor Keys

Also known as the arrow keys the cursor keys help moving the cursor up, down, left and right side on the screen during operation...

The Two Major Components of a Computer System

The two major component of a computer system are;

• HARDWARE

• SOFTWARE

These component are described below.

• Hardware: The hardware of a computer are those parts of a computer that can be seen physically. They can be touched, handled etc. these parts were discussed earlier and include motherboard, monitor, CPU etc. these parts are sometimes called the peripherals.

• Software: These are set of instructions that are supplied to the computer to aid perform it functions. There are two types of software, system software and application software.

Other component of a computer hardware that can be touched with our bear hands.

• CD Drive 
• Monitor
• keyboard
• Mouse
• Motherboard
• Memory

Micro processor  chip is the most important chip which is commonly called the Central Processing Unit (CPU).

This CPU is responsible for arithmetic calculations while the APU for Graphic manipulations. This CPU and APU are merge into the Accelerated Processing Unit APU  which are attached to the motherboard in slim laptops.

 

SOFTWARE

As mentioned briefly before, Software is set of instructions that are sent to computer to perform functions. The instructions herein are series of assignment to be executed by the computer in other to perform a task. Software are of two types i.e. system software and application software...

Application packages

Keyboard

Using your keyboard

Whether you're writing a letter or calculating numerical data, your keyboard is the main way to enter information into your computer. But did you know you can also use your keyboard to control your computer? Learning just a few simple keyboard commands (instructions to your computer) can help you work more efficiently. This article covers the basics of keyboard operation and gets you started with keyboard commands.

How the keys are organized

The keys on your keyboard can be divided into several groups based on function:

§     Typing (alphanumeric) keys. These keys include the same letter, number, punctuation, and symbol keys found on a traditional typewriter.

§     Control keys. These keys are used alone or in combination with other keys to perform certain actions. The most frequently used control keys are Ctrl, Alt, the Windows logo key , and Esc.

§     Function keys. The function keys are used to perform specific tasks. They are labeled as F1, F2, F3, and so on, up to F12. The functionality of these keys differs from program to program.

§     Navigation keys. These keys are used for moving around in documents or webpages and editing text. They include the arrow keys, Home, End, Page Up, Page Down, Delete, and Insert.

§     Numeric keypad. The numeric keypad is handy for entering numbers quickly. The keys are grouped together in a block like a conventional calculator or adding machine.
   Read more about Keyboard Shortcut

How to creat a text

Typing text

Whenever you need to type something in a program, e‑mail message, or text box, you'll see a blinking vertical line ( I ). That's the cursor, also called the insertion point. It shows where the text that you type will begin. You can move the cursor by clicking in the desired location with the mouse, or by using the navigation keys. In addition to letters, numerals, punctuation marks, and symbols, the typing keys also include Shift, Caps Lock, Tab, Enter, the Spacebar, and Backspace.

Key name      How to use it

Shift              Press Shift in combination with a letter to type an uppercase    letter.  Press Shift in combination with another key to type the symbol shown on the upper part of that key.

Caps Lock     Press Caps Lock once to type all letters as uppercase. Press Caps Lock again to turn this function off. Your keyboard might have a light indicating whether Caps Lock is on.

Tab              Press Tab to move the cursor several spaces forward. You can also press Tab to move to the next text box on a form.

Enter             Press Enter to move the cursor to the beginning of the next line. In a dialog box, press Enter to select the highlighted button.

Spacebar        Press the Spacebar to move the cursor one space forward.

Backspace      Press Backspace to delete the character before the cursor, or the selected text.