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Itp100 basic info on computers
- 1. Why do weuse computers?1
- 2.
- 3. 3It allows youtodo more in less time.
- 4. So what exactlyisa computer?4
- 5.
- 6. 6HardwareEquipment that makesup the computer
- 7. 7Only 4OperationsI – Accept inputP – Process dataO – Generate outputS – And store informationThat is it!
- 8. 8Input OperationGetting datainto a computer via an input device.KeyboardsMouseMicrophonesScanners
- 9. Once data isinside the computer it can be accessed by the other parts of the computer for processing.9
- 10. Processing Data:Taking rawdata and turning it intomeaningful information10
- 11. Based on thisdata:Smith, John, pt, 14.5The following information can be generated:John Smith is an hourly employee who earns $14.50 an hour. 11Example:
- 12. 12Processing ChipProcessing dataoperations:Coordinates the work of the different computer partsPerforms mathematical operations accurately and quickly
- 13. 13Output OperationTakes Informationon the computer and makes it available for use outside of the computer.Some common examples of output:
- 14. 14Storage Operation Savinginformation on storage device hardware for later use.Common examples:
- 15.
- 16. SoftwareInstructs the hardwarehowto do the basic 4 operations.16
- 17. 2 types ofsoftware:System SoftwareApplication Software17
- 18. 18Application SoftwareApplication softwareis a set of programs that we use as a tool to process our data and transform it into meaningful information.Example: word processing, spreadsheets, payroll, etc.
- 19. 19System SoftwareThis softwareprovides the framework which allows application software to work. Examples: Mac OS, Windows XP, Vista, Unix… It translates the application software instructions to the hardware.
- 20. 20Translations occur betweenthese different layers:UserTypes in a commandTypes in new commandApplication SoftwareInterprets the command Sends it to the system softwareResponds to system software updates & informs the userSystem SoftwareTranslates commands into machine instructions Sends machine language instructions to hardwareTranslates hardware signals Sends updates to application softwareHardwarePerforms machine instructions Informs system software when it has finished
- 21. Inputget the datainto the computerProcessprocess the data to get informationOutputpresent the informationStore keep the information for future use21Summary
- 22. A computer systemallows us to:finish our work faster,produce professional material,save our work and modify what was saved at a later time.With networking capability we can give the whole world access to our finished work. 22Productivity Tool
- 23. This Wikipedia sitegives you a history of information systems and computersLearnFree.org also has a good site which explains the basics of a computer23Additional Resources
Editor's Notes
- #2 Before we even get started, lets try to understand why computers have become such an integral part of our society.More specifically, how is the computer impacting our lives?You can do anything a computer can do. Anything! So what is the big deal about using a computer?You just can’t do it as fast.Your brain also cannot store that much information. Again, you can do it all, it will just take you much longer.
- #3 In short, what computers do is add to our productivity. When we are more productive, we can accomplish more in less time.The effect of this tool has been phenomenal!An example of another invention that has had a similar impact is the automobile. I can walk anywhere an automobile can go. I just can’t do it as fast.When I use a car, I get to spend more time on other tasks instead of commuting.
- #4 In other words,it gives you more timein your life to do what you need to do.
- #6 So this productivity tool that we use can be broken down into Hardware and Software
- #7 Hardware is basically what you can touch on a computer.
- #8 It can only do 4 things.
- #9 Input operations can be summed up into getting data into the computerThese input devices can include a keyboard, mouse, scanner, and microphone.
- #10 You have to get data into a computer before you can process it or store it.Now that you can get data into the computeryou can process it and store it for later use
- #13 To process data we need a processor.On a desktop computer the processor is a stamp-sized chip located on the motherboard.It coordinates the work of the different computer partsanddoes the needed calculations quickly and accurately
- #14 Once you have information in your computer you can present it via an output device
- #15 One of the main reasons we use computers is to be able to store data for later use.Storage media can include diskettes, CDs, and flash drives.
- #16 We just finished a quick summary of what the hardware component of a computer is.Now lets look at the software component
- #17 Software is what gives the hardware its functionality.It is a set of instructions that tell the hardware what to do.
- #18 There are two types of software: system software and application software
- #19 Application software, such as Word and Excel, are programs that helps us create meaningful information.So the code in application software is translated to the system software which then translated it to machine instructions.
- #20 System software, such as Windows XP or Vista, translates the instructions from the application software to machine instructions that tells the hardware what to do.
- #21 So the code in application software is translated to the system software which then translated it to machine instructions.If the system software can’t translate perform the tasks, then the application software can’t issue the commands.
- #23 and with communication ability, we can give the whole world access to our finished work.