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Basic Computer Functions

Basic Computer Functions. Mrs. Judy Kehr Business Technology Applications. Computer Functions. Computers perform the same four basic functions: Input Process Output Storage. Input. Getting data into the computer Processed data is information Devices used for input include:

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Basic Computer Functions

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  1. Basic Computer Functions Mrs. Judy Kehr Business Technology Applications

  2. Computer Functions • Computers perform the same four basic functions: • Input • Process • Output • Storage

  3. Input • Getting data into the computer • Processed data is information • Devices used for input include: • Keyboards • Mice • Voice (Microphones or Headsets with Microphones) • Web Cameras and Digital Cameras • Joysticks/Gamepads • Touch screens • Pens/Styluses (or Styli) • Scanner

  4. Process • To perform basic operations on data • The Central Processing Unit (CPU) is the brain of the computer; also called microprocessor or computer chip • Contains the ALU (arithmetic/logic unit) • Processing speed is measured in GHz (gigahertz) • Two of the most popular companies that manufacture processors are • Intel (Intel® Core™ i7 processor, Intel® Core™ i5 processor, and Intel® Core™ i3 processor) • AMD (Athlon II Dual-Core Processor, Phenom II, Opteron)

  5. Output • An output device is any piece of computer hardware equipment used to communicate the results of data processing • Devices include • Headphones/Speakers • Monitors or Screens • Printers (laser, ink jet, color laser) • Projectors

  6. Storage • Storage refers to computer components, devices, and recording media that retain digital data used for computing over a period of time • Types of storage • Temporary storage(RAM or main memory) • Permanent storage (saved data)

  7. Storage Capacities • Kilobyte (KB) 1,000 bytes • Megabyte (MB) 1 million bytes • Gigabyte (GB) 1 billion bytes • Terabyte (TB) 1 trillion bytes • Petabyte (PT) 1 thousand TB • Today’s hard drives are measured in gigabytes and terabytes and you would probably purchase a computer with at least a 500 GB hard drive

  8. Temporary Storage Temporary storage is your RAM—random access memory--(also known as primary or main memory). This is the storage area that the computer uses when you boot the computer. The operating system (OS) and programs you use are stored in RAM. Documents you type are stored in RAM until you save them to permanent storage. Today, if you were to buy RAM for a computer, you would most likely buy 2 to 4 GB of RAM. Pictured to the right are examples of RAMmodules.

  9. Permanent Storage Devices So you can access your work later, you typically save work to some type of permanent storage. There are basically four common types of storage devices: • Magnetic disks • Hard drives • Floppy drive • Portable hard drives • Optical disks • CDs and DVDs • Blue ray • Tape drives • Zip drive • Mobile storage devices • Flash memory • Memory cards • iPods

  10. Resources for Info and Images • www.dogpile.com • www.howstuffworks.com • www.google.com • www.officedepot.com • www.officemax.com • www.newegg.com • www.flashmemorystore.com

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