Basic_ComputerS1.ppt
- 2. Table of Contents What is a Computer Computer Hardware Examples of Computer Hardware Computer Software Computer Input Devices Computer Output Devices General Understanding of how your computer works Basic Computer Terms and Definitions
- 3. Definition of Computer Computers are used for Playing Games, Watching Movies, to send e-mails and to make e-purchases. Its is also used for commercial purposes such as in supermarkets, air tickets, reservation counters.
- 5. Computers Have Two Main Parts 1. Computer Hardware 2. Computer Software
- 6. What is Computer Hardware? Computer Hardware is the physical part of the computer system, the machinery and equipment. Parts of the computer “you can see”
- 7. Examples of Computer Hardware Monitor: T.V. like screen used to show pictures and words CPU: Central Processing Unit this is where most of the computer’s calculations take place. In terms of computing power, the CPU is the most important element of a computing system. Keyboard: This device is used to type information into the computer and contains the numbers 0-9.
- 8. Printers One output device is a printer. Once a computer user has created something on the computer, such as a story, he can send it to the printer. The printer prints exactly what’s on the screen.
- 9. Two Common Types of Printers An inkjet printer usually prints in color. It prints by squirting out small dots of ink onto the paper. A laser printer uses a laser beam to create an image that is transferred to paper. It uses toner and a drum. The ink is powder.
- 10. More Computer Hardware Mouse: a small device, which you move across the top of the desk to move the pointer or cursor on the screen. Image Scanner: an electronic device that generates a digital representation of an image for data input to a computer
- 11. Storage Devices 1. Floppy disk Drive The CPU has places to insert disks. One kind of disk drive is a floppy disk drive. A floppy disk drive reads information from a very thin, floppy disk inside a hard plastic case.
- 12. 2. CD-ROM Disk Drive CD-ROM stands for Compact Disk-Read Only Memory. They are flat, shiny disks that store information. Most new computers have CD-RW drives. CD-RW stands for Compact Disk-ReWrite. This type of disk allows you to write information to it, as well as read from it. Most can hold up to 700 megabytes of information.
- 13. 3. DVD Drive/Burner The newest computers come with the option of a DVD drive. A DVD (Digital Video Disc) looks just like a CD, but holds much more information! They can store 4.7 gigabytes of data!
- 14. 4. Flash Drive A Flash Drive is a relatively new storage device. It’s like a mini, portable hard drive! You plug it into the USB (Universal Serial Bus) port on the front of newer computers and you can save to it!
- 15. 5. Hard Disk Drive The Hard Disk Drive is a magnetic storage device. All the computer programs and files you create and save are located there. This is permanent storage (at least until you uninstall software or delete a file). The hard drive is normally signified by the drive letter “C”. Today’s hard drives can store a HUGE amount of information. A new computer might have a hard drive that will hold 250 GB’s!
- 16. Contd. Hard Disk Drives can spin at 7200 or more rpm’s (Revolutions Per Minute). That means in one minute, the hard drive spins around more than 7200 times!
- 17. How Do Computers Work? Input--This is when information is entered into a computer. Some common input devices include the keyboard, mouse and scanner. Output--This is the information that comes out of a computer after it has been processed. The information comes out on output devices such as a printer or computer monitor. Processing--This is when the information is handled by the computer’s brain, known as the CPU (Central Processing Unit).
- 18. Computer Processing Once information has been sent to a computer by one of the input devices it’s processed. The computer uses it’s brain to process the information. The computer’s brain is called the CPU, or Central Processing Unit.
- 19. Once information has been sent to a computer by one of the input devices it’s processed. The computer uses it’s brain to process the information. The computer’s brain is called the CPU, or Central Processing Unit.
- 20. Random Access Memory When a computer processes information, it uses software programs. Each program requires a certain amount of electronic memory, or RAM (Random Access Memory) to run correctly.
- 21. RAM is temporary memory. The computer holds information in this memory and gets it when it needs it. If a computer has more RAM, it can solve problems and process information faster! If you’re updating your computer, more RAM is a great thing to add!
- 22. Read-Only Memory A second kind of computer memory is ROM, which stands for Read-Only Memory. This memory is permanent. The information there was put there when the computer was made. The computer needs the information in it’s ROM memory in order to function.
- 23. Computer Input Devices Computer Devices that input information in the computer Examples Key Board Mouse Scanner Digital Camera Go Back to Table of Contents
- 24. Computer Output Devices Computer Devices that output information from the computer. Examples Monitor Printer Go Back to Table of Contents
- 25. General Understanding of how your computer works! Overview To understand anything it helps to break it down into it's basic components. Then you need to know how each component works. Finally you look at how all the components work together to achieve the desired end product or result. Motherboard It is the main circuit board inside the CPU case. It holds the microprocessor, memory and other crucial circuits and components that control the operation of the Personal Computer. Every device inside or connected to a Personal Computer finds it's way to this board.
- 26. Memory The mother board takes the input you give it like mouse clicks, and produces output for you like displaying or printing a file. It can't do this without memory. The PC operating system used by the PC is copied from storage to memory at power up. The OS copy in memory then runs the PC. Memory is volatile which means that when your PC is turned off the contents of memory are lost. It is completely blank and must reloaded each time the PC is powered up. Storage Storage is non-volatile which means it retains information even when it is powered off. It stores programs which run the PC as well as data, which is a digital form of everything you use like documents, music, pictures, etc Input Devices The keyboard and mouse are the main input devices you use to control your PC.
- 27. Output Devices When you send inputs into the PC, it processes them and produces useful output for you. The primary output devices are the video display, printer and speakers. Software Some people want to use the power of their computer to create works of art, others want to create music, or play games, surf the web, or play the stock market. Whatever you want to do with your computer, software is the key to doing it. What happens when your PC is powered on? With a simple push of a button, your computer comes to life. Go Back to Table of Contents
- 28. What is Computer Software? Computer Software are programs that tell the computer what to do. Examples Microsoft Word-word processing program Microsoft PowerPoint-presentation program Microsoft Excel-work book program used to track, calculate, and analyze numeric data Go Back to Table of Contents
- 29. Basic Computer Quiz 1. What is Computer Hardware? 2. What is Computer Software? 3. Can you operate a Computer with out the Computer Software? 4. How can Computer Software help your business? 5. What are Computer Input devices? 6. What are Computer Output devices? 7. Where is the Mother Board located? 8. Name a couple of Computer Software. 9. Define Internet 10. How would the Internet help your business? Go Back to the Table of Contents
- 30. Answers to Basic Computer Quiz 1. Computer Hardware is the physical part of the computer system, the machinery and equipment. For example: Monitor, Key Board, Printer and more. 2. Computer Software are programs that tell the computer what to do. For Example: Microsoft Word, Microsoft PowerPoint and more. 3. No. You need Computer Software to operate a computer, with out the computer software the computer will be nothing more than just computer hardware. 4. There are computer software that can help your business, for example, Accounting software can help you do taxes and pay roll faster than by hand. The computer soft ware will calculate numbers for you. 5. Input Computer Devices are computer devices that input information into the computer for example, the mouse, keyboard and scanner. 6. Output Computer Devices are computer devices that output information from the computer like the printer and the monitor. 7. Mother Board is the main circuit board inside the CPU case. It holds the microprocessor, memory and other crucial circuits and components that control the operation of the Personal Computer.
- 31. 8. Computer Software comes in many programs. Here are a few that you might be familiar with, Microsoft Word, for word processing documents, Microsoft PowerPoint for creating professional graphic slide presentations and Microsoft Access for creating database. 9. Internet: A world wide network that connects millions of computers to share and exchange data, business, news, opinions, and research results. The Internet is not the same as the World Wide Web (WWW). The World Wide Web is a service that is provided on the Internet. 10. The internet can advertise your business and network all over the world. This will help your marketing and boost sales and networking for your business. Go Back to Table of Contents
- 32. Basic Computer Terms and Definitions CPU: This computer component has several names: Central Processing Unit, microprocessor or processor. This unit is the brain of the computer processes and executes instructions in a software program. The CPU’s primary functions include retrieving instructions from the computer’s memory, including random access memory, comprehending and executing instructions, and directing the input and output activity of the computer. Desktop: The first screen that you see when any Windows operating system screen is up and running. One of the main purposes of the Desktop is to make it easier to access different application programs, files and documents. File: Unit for storing information that may include a word-processing document, a spreadsheet, a picture, a graphic, musical piece, or even part of an application program. Examples of "files" include text files which could be a letter or report and graphic files which could be a picture. Each file has a name because the data or information created in a software program is saved with a file name. Folder: Method for organizing files that is related by topic, by purpose, by type, by program, or even by a project that you are working on. NOTE: When an application program is loaded onto your computer, it will group similar applications in a folder. As you add or create files, you can organize them however you want.
- 33. Hyperlink: Allows you to move from one web page document to another. It can be text which is usually underlined or a graphic. When you move your mouse over a hyperlink, the mouse cursor usually becomes a hand which indicates a hyperlink is present. Once you click on the link, you move to another web page document or to another place on the same web page. Icon: A small picture that represents processing options such as programs, documents, and shortcuts. When you click on the icon, the file or program will open. The most easily recognized icon is the Recycle Bin which is the graphic below. Input: Commonly known as data and refers to numbers, letters, words, images, video, music and even sounds. Other computer input includes commands and user response. A command directs the computer to execute tasks or perform certain activities. One example of a command is a command buttons OK, Cancel and Help seen on the Shut Down Windows dialog box. Internet: A world wide network that connects millions of computers to share and exchange data, news, opinions, and research results. The Internet is not the same as the World Wide Web (WWW). The World Wide Web is a service that is provided on the Internet. Keyboard: The keyboard is an input device that allows you to enter letters, numbers and symbols into your computer. The keyboard keys include the alphanumeric keys (letters and numbers), numeric keypad, special function keys, mouse cursor moving keys, and status lights.
- 34. Files and Folders: Think of a computer folder as being similar to a filing cabinet folder, whereas a computer file is similar to the pieces of paper that are placed in the folders. Graphic User Interface (GUI): Combines text and graphics to make software easier to use. Graphical User Interface features include icons, windows, menus, and buttons. Hard Copy: Usually refers to a printout on paper. Hard Drive: The purpose of the hard drive is to store information. This device that allows the computer to permanently retain and store data like the operating system, programs and information data. The hard drive holds more data than a diskette and accesses information faster than on diskettes. Storage refers to the capability of storing things, and as for the computer, it is information. Hardware: Refers to any component of the computer system that you can like the monitor, keyboard, mouse, printer, computer unit, scanner, speakers and even the components inside of the computer unit if you opened the box up.
- 35. Menu: List of options that may be commands or other options from which you can choose from. The following illustration is the File Menu Bar command menu list. Mouse: Besides a keyboard, a mouse is the most common input device for a computer. The mouse is a small, palm-sized input device that you move across a flat surface, such as a desktop, to control the movement of the pointer on the screen. Technically, there are many operations that are much easier to perform with a mouse than a keyboard because you can just point and click to select an item on a screen or choose an item from a list of options. Mouse Commands: Before examining the various commands, you must understand how to execute each mouse command. The mouse commands include move, point, click, deselect, double-click, drag, and right-click. My Computer: An icon that opens into a folder of icons for all of the resources on the computer like the hard drive and printer. Operating System: Software that acts as an interface between you, the application software (like word processing or accessing the Internet), and the computer components. This includes interpreting and carrying out basic instructions that operate a computer like recognizing information from the keyboard and mouse, sending information to the monitor, printer, or speakers and scanners, storing information to the hard drive and removable drives. Common operating systems include Windows XP, Windows 2000, Windows ME, and MAC OS.
- 36. RAM: This is an acronym for Random Access Memory. This memory is a work area or a temporary storage space where the computer places program information so that it can execute the program instructions and information. When the program or file is closed, the data or programs are removed from RAM. The amount of RAM you have on your computer is crucial in determining how many programs can be opened (running) and how much data is available for each program. RAM is available in MB or megabytes. An example is 256MB of RAM. Select: A single left mouse click to select a file or folder icon. Software: Instructions that provide the computer with step-by-step actions that need to be executed to complete a specific task. A computer will not function with software. Go Back to Table of Contents