Computer Basics & Keyboarding

What Is A Computer? An electronic device operating under the control of instructions stored in its own memory unit An electronic device operating under the control of instructions stored in its own memory unit

What Does A Computer Do? Computers can perform four general operations Computers can perform four general operations 1.Input 2.Process 3.Output 4.Storage These operations comprise the information processing cycle. These operations comprise the information processing cycle.

Relate Info Processing to Match the tasks with the information processing steps. a) Input b) Processing c) Output d) Distribution e) Storage 1. Viewing the message you have created on the screen 2. Keying the message 3. Saving a copy of the message in your Sent folder. 4. Using the Send feature to send the message. 5. Formatting the message in a large type font.

Input Devices An input device is any hardware component that allows you to enter data and instructions into a computer. An input device is any hardware component that allows you to enter data and instructions into a computer.

5 Input Devices 1. Keyboard 2. Mouse 3. Microphone 4. Scanner 5. Digital Camera

Processing The system unit is a case that contains electronic components of the computer that are used to process data. The system unit is a case that contains electronic components of the computer that are used to process data. Two main components on the motherboard: Two main components on the motherboard: – Processor – Memory

Components on Motherboard The processor, also called the central processing unit (CPU), is the electronic component that interprets and carries out the basic instructions waiting to be executed and data needed by those instructions. The processor, also called the central processing unit (CPU), is the electronic component that interprets and carries out the basic instructions waiting to be executed and data needed by those instructions. Memory consists of electronic components that store instructions waiting to be executed and data needed by those instructions. Memory consists of electronic components that store instructions waiting to be executed and data needed by those instructions.

Output Devices An output device is any hardware component that conveys information to one or more people. An output device is any hardware component that conveys information to one or more people.

4 Output Devices 1. Printer 2. Monitor 3. Speakers 4. Headphones

Storage Devices A storage device records (writes) and/or retrieves (reads) items to and from storage media. A storage device records (writes) and/or retrieves (reads) items to and from storage media.

Storage Device Examples Floppy Disks Floppy Disks USB Flash Drive USB Flash Drive Hard Disks Hard Disks CDs CDs DVDs DVDs Memory Cards Memory Cards

Assignment: Pictures in Paint (20 points) Open Paint: Open Paint: Draw 2 computer parts that fit under each part of the IPOS cycle. Draw 2 computer parts that fit under each part of the IPOS cycle. Example: Input – Keyboard, Mouse Example: Input – Keyboard, Mouse

IPOS Foldable

What makes a computer powerful? Speed: A computer can do billions of actions per second. Speed: A computer can do billions of actions per second. Reliability: Failures are usually due to human error, one way or another. Reliability: Failures are usually due to human error, one way or another. Storage: A computer can keep huge amounts of data. Storage: A computer can keep huge amounts of data.

Basic Terms Hardware- the physical parts of the computer. Hardware- the physical parts of the computer. Software- the programs (instructions) that tell the computer what to do Software- the programs (instructions) that tell the computer what to do Data- individual facts like first name, price, quantity ordered Data- individual facts like first name, price, quantity ordered Information- data which has been massaged into a useful form, like a complete mailing address Information- data which has been massaged into a useful form, like a complete mailing address Default- the original settings; what will happen if you don't change anything. Default- the original settings; what will happen if you don't change anything.

Computer Types Supercomputer Desktop PC PDA Hand-Held Tablet PC Laptop/ Notebook

How Does A Computer Know What To Do? For a computer to perform operations, it must be given a detailed set of instructions that tells it exactly what to do For a computer to perform operations, it must be given a detailed set of instructions that tells it exactly what to do – These instructions are called computer programs, or software Software can be categorized into two types: Software can be categorized into two types: – System software – Application software

Applications An application is another word for a program running on the computer. Whether or not it is a good application depends on how well it performs the tasks it is designed to do and how easy it is for the user to use. An application is another word for a program running on the computer. Whether or not it is a good application depends on how well it performs the tasks it is designed to do and how easy it is for the user to use. That involves the user interface- the way the user tells the software what to do and how the computer displays information and options to the user. That involves the user interface- the way the user tells the software what to do and how the computer displays information and options to the user.

Text Interface A text interface was all that was available in the beginning. The example below is of PKZIP, which squashes files into smaller size to save you space. Notice in the center the command you would have to type to use this program. A text interface was all that was available in the beginning. The example below is of PKZIP, which squashes files into smaller size to save you space. Notice in the center the command you would have to type to use this program.

Graphical User Interface Today, many computers use an operating system that has a Graphical User Interface (GUI). Today, many computers use an operating system that has a Graphical User Interface (GUI). A GUI is more user-friendly with icon symbols. A GUI is more user-friendly with icon symbols. An example of a GUI is: Windows 95/98/2000 and XP. An example of a GUI is: Windows 95/98/2000 and XP.

System Software Consists of programs to control or maintain the operations of computer equipment Consists of programs to control or maintain the operations of computer equipment Two types of system software are: Two types of system software are: –Operating System –Utility Program

System Software Types An operating system is a set of programs that coordinates all the activities among computer hardware devices. An operating system is a set of programs that coordinates all the activities among computer hardware devices. –Ex: Windows XP A utility program allows a user to perform maintenance-type tasks usually related to managing a computer, its devices, or its programs. A utility program allows a user to perform maintenance-type tasks usually related to managing a computer, its devices, or its programs. –Ex: Norton’s Antivirus, McAfee

Rest of Period Complete Crossword Puzzle. Complete Crossword Puzzle. –(If not completed in class, it needs to be finished for homework.) Complete any work from yesterday. Complete any work from yesterday.

Application Software Application software consists of programs that tell a computer how to produce information Application software consists of programs that tell a computer how to produce information Excellent example: Excellent example: –Microsoft Access –Microsoft Excel –Microsoft Word –Microsoft PowerPoint

Microsoft WORD The word processor application (Word) enables you to create documents such as: The word processor application (Word) enables you to create documents such as:  Reports  Letters  Memos  Resumes

Microsoft EXCEL The spreadsheet application (Excel) lets you work with numbers to prepare items such as: The spreadsheet application (Excel) lets you work with numbers to prepare items such as: BudgetsBudgets SpreadsheetsSpreadsheets GraphsGraphs

Microsoft ACCESS The database application (Access) organizes information such as: The database application (Access) organizes information such as: –Addresses –Home Inventory –Schedules

Microsoft POWER POINT The presentation application (PowerPoint) can be used to create: The presentation application (PowerPoint) can be used to create:  Slides  Outlines  Speaker’s notes  Audience handouts

Microsoft OUTLOOK The schedule/organization application (outlook) increase your efficiency by keeping track of: The schedule/organization application (outlook) increase your efficiency by keeping track of: – –Appointments –Contacts

Microsoft PUBLISHER The desktop publishing application (Publisher) helps you design professional-looking documents such as: The desktop publishing application (Publisher) helps you design professional-looking documents such as: –Newsletters –Postcards –Brochures –Catalogs –Business Cards

Integrated Software An integrated software package is a program that combines several computer applications into one program. An integrated software package is a program that combines several computer applications into one program. Excellent example: Excellent example: –Microsoft XP Office suite

The End Any Questions? Any Questions?