computer basics & keyboarding. what is a computer? an electronic device operating under the...
TRANSCRIPT
Computer Basics & Computer Basics & KeyboardingKeyboarding
What Is A Computer?What Is A Computer?
An electronic device operating under the An electronic device operating under the control of instructions stored in its own control of instructions stored in its own memory unitmemory unit
What Does A Computer Do?What Does A Computer Do?
Computers can perform Computers can perform fourfour general general operationsoperations– InputInput– ProcessProcess– OutputOutput– StorageStorage
These operations comprise the These operations comprise the information processing cycle.information processing cycle.
Relate Info Processing to E-Relate Info Processing to E-mailmail
Match the tasks with Match the tasks with the information the information processing steps.processing steps.
a)a) InputInputb)b) ProcessingProcessingc)c) OutputOutputd)d) DistributionDistributione)e) StorageStorage
1.1. Viewing the message Viewing the message you have created on you have created on the screenthe screen
2.2. Keying the messageKeying the message3.3. Saving a copy of the Saving a copy of the
message in your Sent message in your Sent folder.folder.
4.4. Using the Send Using the Send feature to send the feature to send the message.message.
5.5. Formatting the Formatting the message in a large message in a large type font.type font.
Input DevicesInput Devices
An An input deviceinput device is any is any hardwarehardware component that component that allows you to allows you to enter data and enter data and instructionsinstructions into into a computer.a computer.
6 Input Devices6 Input Devices
1.1. KeyboardKeyboard
2.2. MouseMouse
3.3. MicrophoneMicrophone
4.4. ScannerScanner
5.5. Digital Digital CameraCamera
6.6. PC video PC video cameracamera
ProcessingProcessing
The The system unitsystem unit is a case that is a case that contains electronic components of contains electronic components of the computer that are used to the computer that are used to process data.process data.
Two main components on the Two main components on the motherboard:motherboard:– ProcessorProcessor– MemoryMemory
Components on Components on MotherboardMotherboard
The The processorprocessor, also called the , also called the central central processing unit (CPU),processing unit (CPU), is the is the electronic component that electronic component that interpretsinterprets and carries out the basic and carries out the basic instructionsinstructions waiting to be executed and data waiting to be executed and data needed by those instructions.needed by those instructions.
MemoryMemory consists of electronic consists of electronic components that components that storestore instructions instructions waiting to be executed and data waiting to be executed and data needed by those instructions.needed by those instructions.
Output DevicesOutput Devices
An An output output devicedevice is any is any hardware hardware component component that conveys that conveys information to information to one or more one or more people.people.
3 Output Devices3 Output Devices
1.1. PrinterPrinter
2.2. MonitorMonitor
3.3. Speakers/Speakers/
HeadphonesHeadphones
Storage DevicesStorage Devices
A storage device A storage device recordsrecords (writes) (writes) and/or and/or retrievesretrieves (reads) items to and (reads) items to and from storage media.from storage media.
Storage Device ExamplesStorage Device Examples
Floppy DisksFloppy Disks USB Flash USB Flash
DriveDrive Hard DisksHard Disks CDsCDs DVDsDVDs Memory Memory
CardsCards
IPOS FoldableIPOS Foldable
Assignment: Pictures in Assignment: Pictures in PaintPaint
(20 points)(20 points) Open Paint:Open Paint: Draw 2 computer parts that fit under Draw 2 computer parts that fit under
each part of the IPOS cycle.each part of the IPOS cycle. Example: Input – Keyboard, MouseExample: Input – Keyboard, Mouse
What makes a computer What makes a computer powerful?powerful?
Speed: Speed: A computer can A computer can do billions of actions per do billions of actions per second. second.
Reliability: Reliability: Failures are Failures are usually due to human usually due to human error, one way or another.error, one way or another.
Storage: Storage: A computer can A computer can keep huge amounts of keep huge amounts of data.data.
Basic TermsBasic Terms Hardware- Hardware- the physical parts of the the physical parts of the
computer.computer. Software- Software- the programs (instructions) the programs (instructions)
that tell the computer what to dothat tell the computer what to do Data- Data- individual facts like first name, individual facts like first name,
price, quantity orderedprice, quantity ordered Information- Information- data which has been data which has been
massaged into a useful form, like a massaged into a useful form, like a complete mailing addresscomplete mailing address
Default- Default- the original settings; what will the original settings; what will happen if you don't change anything.happen if you don't change anything.
Computer Types…Computer Types… Computers for personal Computers for personal
use come in all shapes use come in all shapes and sizes, from tiny and sizes, from tiny PDAPDAs (s (ppersonal ersonal ddigital igital aassistant) to hefty ssistant) to hefty PCPC ((ppersonal ersonal ccomputer) omputer) towers. More towers. More specialized models are specialized models are announced each week - announced each week - trip planners, expense trip planners, expense account pads, language account pads, language translators... translators...
Tablet PC
Laptop/Notebook
Computer Types…Computer Types…
Supercomputer
Desktop PC
PDA
Hand-held (HPC)
How Does A Computer Know How Does A Computer Know What To Do?What To Do?
For a computer to perform operations, For a computer to perform operations, it must be given a detailed set of it must be given a detailed set of instructions that tells it exactly what to instructions that tells it exactly what to dodo– These instructions are called These instructions are called computer computer
programsprograms, or , or softwaresoftware SoftwareSoftware can be categorized into two can be categorized into two
types:types:– System softwareSystem software– Application softwareApplication software
ApplicationsApplications
An An applicationapplication is another word for a is another word for a program running on the computer. program running on the computer. Whether or not it is a good application Whether or not it is a good application depends on how well it performs the depends on how well it performs the tasks it is designed to do and how easy tasks it is designed to do and how easy it is for the user to use. it is for the user to use.
That involves the That involves the user interfaceuser interface-- the the way the user tells the software what to way the user tells the software what to do and how the computer displays do and how the computer displays information and options to the user. information and options to the user.
Text InterfaceText Interface A A text interfacetext interface was all that was was all that was
available in the beginning. The example available in the beginning. The example below is of PKZIP, which squashes files below is of PKZIP, which squashes files into smaller size to save you space. into smaller size to save you space. Notice in the center the command you Notice in the center the command you would have to type to use this program. would have to type to use this program.
Graphical User InterfaceGraphical User Interface Today, many computers use an operating Today, many computers use an operating
system that has a system that has a Graphical User InterfaceGraphical User Interface (GUI). (GUI).
A GUI is more user-friendly with icon symbols.A GUI is more user-friendly with icon symbols.
Windows Windows 95/98/2000 95/98/2000 and XP are and XP are common GUIs.common GUIs.
System SoftwareSystem Software
Consists of programs to Consists of programs to control or control or maintain the operations of computer maintain the operations of computer equipmentequipment
Two types of system software are:Two types of system software are:– Operating SystemOperating System– Utility ProgramUtility Program
System Software TypesSystem Software Types
An An operating systemoperating system is a set of is a set of programs that coordinates all the programs that coordinates all the activities among computer hardware activities among computer hardware devices.devices.– Ex: Windows XPEx: Windows XP
A A utility programutility program allows a user to allows a user to perform maintenance-type tasks perform maintenance-type tasks usually related to managing a usually related to managing a computer, its devices, or its programs.computer, its devices, or its programs.– Ex: Norton’s Antivirus, McAfeeEx: Norton’s Antivirus, McAfee
Rest of PeriodRest of Period
Complete Crossword Puzzle. Complete Crossword Puzzle. – (If not completed in class, it needs to be (If not completed in class, it needs to be
finished for homework.)finished for homework.) Complete IPOS Pictures in Paint.Complete IPOS Pictures in Paint.
– You need 8 total computer parts.You need 8 total computer parts. 2 inputs2 inputs 2 outputs2 outputs 2 processing2 processing 2 storage2 storage
Application SoftwareApplication Software
Application softwareApplication software consists of consists of programs programs that tell a computer how to produce that tell a computer how to produce informationinformation
Excellent example:Excellent example:– Microsoft AccessMicrosoft Access– Microsoft ExcelMicrosoft Excel– Microsoft WordMicrosoft Word– Microsoft PowerPointMicrosoft PowerPoint
Microsoft Microsoft WORDWORD
The The word processor applicationword processor application (Word) (Word) enables you to create documents such enables you to create documents such as:as:
Reports Reports LettersLetters MemosMemos ResumesResumes
Microsoft Microsoft EXCELEXCEL
The The spreadsheet applicationspreadsheet application (Excel) (Excel) lets you work with numbers to lets you work with numbers to prepare items such as:prepare items such as:• BudgetsBudgets• SpreadsheetsSpreadsheets• GraphsGraphs• Loan payments Loan payments
schedulesschedules• InvoicesInvoices• TimecardTimecard
Microsoft Microsoft ACCESSACCESS
The The database applicationdatabase application (Access) (Access) organizes information such as:organizes information such as:
– AddressesAddresses– Home InventoryHome Inventory– SchedulesSchedules– ExpensesExpenses
Microsoft Microsoft POWER POINTPOWER POINT
The The presentation applicationpresentation application (PowerPoint) can be used to create:(PowerPoint) can be used to create:
SlidesSlides OutlinesOutlines Speaker’s notesSpeaker’s notes Audience handoutsAudience handouts
Microsoft Microsoft OUTLOOKOUTLOOK
The The schedule/organization schedule/organization applicationapplication (outlook) increase your (outlook) increase your efficiency by keeping track of:efficiency by keeping track of:– E-mailE-mail– AppointmentsAppointments– ContactsContacts– EventsEvents– To-do listsTo-do lists
Microsoft Microsoft PUBLISHERPUBLISHER
The The desktop publishing applicationdesktop publishing application (Publisher) helps you design professional-(Publisher) helps you design professional-looking documents such as:looking documents such as:– NewslettersNewsletters– PostcardsPostcards– BrochuresBrochures– Catalogs Catalogs – Business Cards Business Cards
Microsoft Microsoft FRONTPAGEFRONTPAGE
The The web page applicationweb page application (FrontPage) enables you to:(FrontPage) enables you to:– Create and maintain your own web siteCreate and maintain your own web site
Integrated SoftwareIntegrated Software
An An integrated software packageintegrated software package is a is a program that combines several program that combines several computer applications into one computer applications into one program.program.
Excellent example: Excellent example: – Microsoft XP Office suiteMicrosoft XP Office suite
The EndThe End
Any Any Questions?Questions?