1 / 16

Computer Hardware and Software

Computer Hardware and Software. Computer Technology Timpview High School. What Is a Computer?. An electronic device that repeats the following cycle: accepts input processes data produces output stores information. How does my computer work?.

shadi
Download Presentation

Computer Hardware and Software

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Computer Hardwareand Software Computer Technology Timpview High School

  2. What Is a Computer? An electronic device that repeats the following cycle: • accepts input • processes data • produces output • stores information

  3. How does my computer work? • Signals are sent to the computer’scentral processing unit (CPU) • CPU is also known as the microprocessor • Performs calculations & carries out instructions • Speed is measured in hertz, or cycles. • Megahertz (MHz) – Millions of cycles per second • Gigahertz (GHz) – Billions of cycles per second

  4. Bit, Bytes, andBinary Numbers • Computers process only two numbers: 0 and 1 • A string of 1s and 0s is called a binary number • Language is known as binary code • Each 1 or 0 is known as a bit • Byte is eight bits (basic building block of info) • Kilobyte, megabyte, gigabyte, terabyte (thousand) (million) (billion) (trillion) The word “cool” in binary numbers 01000011 01001111 01001111 01001100 C O O L

  5. Hardware Basics • Hardware is the collection of physical devices that make up your computer system • Also known as components • Hardware components may be internal or peripheral • Internal components are housed inside the system unit, also called the computer case. • Peripheral devices are connected on the outside of the system unit, or case.

  6. Input and Output Devices • Input and output devices are components that you use to communicate with your computer. • Input – when a user enters info into a computer • Output – when a computer delivers info back to a user

  7. Types of Input Devices

  8. Types of Output Devices • Monitor • Printer • Speakers

  9. Memory and Storage Basics • Computer stores data in three main places: • Random Access Memory (RAM) • Read-Only Memory (ROM) • Storage Device

  10. When do I use RAM or ROM? • Read-Only Memory (ROM) • Permanent information • Holds the computer’s built-in, boot-up instructions • Cannot be erased or changed • Random Access Memory (RAM) • Temporary information • Erased when you turn off the computer • Is the computer’s main working memory

  11. How is information stored? • When you save a file, you move the information from RAM to a storage device. Storage Device What It Does Size Major storage device inside your 40 GB to 1 tera byte (TB) Hard computer; also known as the hard Drive disk;magnetic storage; C: drive Portable devices that plug directly 256 MB to 4 GB or more Flash into a computers USB port; is Drives Referred to as solid state storage store large - • Portable,optical storage devices CD = 700 800 MB CDs and That use a laser to read and write Information. Is the D: drive DVD = 4.7 GB to 17 GB DVDs Portable device that store smaller Floppy disk = 1.44 MB Floppy files such as text documents ZIP disk = 100 MB to Disk magnetic storage; A: drive 750 MB

  12. Software Basics • Software – set of instructions that makes it possible for your computer to perform tasks • Two main categories: • Operating System Software • Application Software

  13. Operating System Software • Required for the computer to work • Controls all the other software programs and allows your hardware devices to work properly • May be referred to as the platform • Examples: • Windows • Mac OS • DOS

  14. Operating System Software (cont.) • Windows and Mac OS use a graphical user interface (GUI) • GUI uses icons and menus to help the user perform tasks • Operating System allows the user to multitask • Multitasking is having more than one program open at the same time.

  15. Application Software • Programs that perform specific tasks for users • Many different types

More Related