Basic of computer
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The document describes the basic components and functions of a computer system. It explains that the monitor displays visual output, while the CPU contains the computer's processor and can be in desktop or tower cases. The document outlines different input devices like keyboards, mice, scanners, and their functions. It also discusses internal memory components like RAM and ROM that help the CPU process and store information, as well as long-term storage devices like hard disk drives. Finally, it mentions that the motherboard coordinates communication between all computer components and is essential to the computer's operation.
Basic of computer
- 2. The monitor looks like a TV and lets lets you see your work and your files.
- 3. CPU stands for “Central Processing Unit”. They contain the brains of the computer. They can be desktop models that the monitor sits on top of, or tower models that stand up tall.
- 4. 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. Floppy disks can hold up to 1.44 megabytes of information.
- 5. 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.
- 7. The keyboard is probably the most used input device. It operates a lot like a typewriter, but has many additional keys that let it do special things a typewriter can’t.
- 8. The flashing light on the computer screen is called the cursor. This cursor can be moved up and down or left and right by pressing the 4 keys that have arrows on them. These arrow keys are called cursor keys.
- 9. When this key is pressed at the same time you press a letter key, a capital letter appears on your screen. When it is held down when you press a key with a symbol and number, the top symbol appears on the computer screen. There are two shift keys on your keyboard.
- 10. When you write a letter or a story pressing the Enter Key makes the cursor jump down to the next line. This is a very helpful key to use when you want to start a new paragraph or you’re typing your spelling list.
- 11. Nope, it’s not a rodent! It’s another input device. It’s called a mouse because of it’s shape and the way the cable attaching it to the computer looks a bit like a tail. There are two kinds of mice. Some use a roller ball that allows the mouse to roll around a flat surface. When you do that and look up at the screen, you’ll see a small moving arrow. This arrow is called the pointer.
- 12. A laser mouse doesn’t have a roller ball. It uses a laser light that makes the pointer move. Laser mice don’t have to have their insides cleaned!
- 13. A scanner is a very useful input device. You can place a page of writing or pictures in the scanner and it will send the information to your computer. There they can be changed, saved into a computer file, or printed.
- 14. Printers Soundboard Audio Speakers
- 15. 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.
- 16. 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.
- 17. A soundboard is an electronic circuit board, located inside the computer, that can produce music and high quality sounds. If you play video games and multimedia programs on your computer, you’ll need a soundboard
- 18. Speakers can be connected to your computer so you can hear very realistic sound effects and wonderful music. Some computer monitors come with built in speakers.
- 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. 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. 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
- 22. 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!
- 23. Your computer couldn’t work without the motherboard. It ties everything together! It allows every part of your computer to receive power and communicate with each other. Everything that runs the computer or enhances it’s performance is either part of the motherboard or plugs into one of it’s expansion slots or ports.
- 24. A BIOS chip (Basic Input Output System) is a very important computer component. In simple terms, the BIOS chip wakes up the computer when you turn it on and reminds it what parts it has and what they do!
- 25. Kids Domain Resources: Computer Connections, Computers Inside & Out http://www.howstuffwor ks.com “Computer Basics”, Teacher Created Materials, pub.1996.