1 / 15

APPENDIX A HARDWARE AND SOFTWARE

APPENDIX A HARDWARE AND SOFTWARE. INTRODUCTION. Information technology (IT) - Any computer-based tool that people use to work with information and support the information and information-processing needs of an organization

townsendg
Download Presentation

APPENDIX A 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. APPENDIX A HARDWARE AND SOFTWARE

  2. INTRODUCTION • Information technology (IT) - Any computer-based tool that people use to work with information and support the information and information-processing needs of an organization • Hardware- Consists of the physical devices associated with a computer system • Software - The set of instructions that the hardware executes to carry out specific tasks

  3. HARDWARE BASICS • Computer-An electronic device operating under the control of instructions stored in its own memory that can accept, manipulate, and store data • Hardware components include: • Central processing unit (CPU) • Primary storage • Secondary storage • Input device • Output device • Communication device

  4. CENTRAL PROCESSING UNIT • Central processing unit (CPU) (or microprocessor) - The actual hardware that interprets and executes the program (software) instructions and coordinates how all the other hardware devices work together • Control unit -Interprets software instructions and literally tells the other hardware devices what to do, based on the software instructions • Arithmetic-logic unit (ALU) -Performs all arithmetic operations (for example, addition and subtraction) and all logic operations (such as sorting and comparing numbers)

  5. CENTRAL PROCESSING UNIT • The number of CPU cycles per second determines the speed of a CPU • Megahertz (MHz) - The number of millions of CPU cycles per second • Gigahertz (GHz) - The number of billions of CPU cycles per second

  6. PRIMARY STORAGE • Primary storage - The computer’s main memory, which consists of the random access memory (RAM), cache memory, and the read-only memory (ROM) that is directly accessible to the CPU

  7. SECONDARY STORAGE • Secondary storage - Consists of equipment designed to store large volumes of data for long-term storage • Megabyte (MB or M or Meg) - Roughly 1 million bytes • Gigabyte (GB) -Roughly 1 billion bytes • Terabyte (TB) - Roughly 1 trillion bytes

  8. OPTICAL MEDIUM • Optical medium types include: • Compact disk-read-only memory (CD-ROM) • Compact disk-read-write (CD-RW) drive • Digital video disk (DVD) • DVD-ROM drive • Digital video disk-read/write (DVD-RW)

  9. INPUT DEVICES • Input device - Equipment used to capture information and commands • Manual input devices • Joystick • Keyboard • Microphone • Automated input devices • Bar code scanner • Digital camera • Magnetic ink character reader

  10. OUTPUT DEVICES • Output device -Equipment used to see, hear, or otherwise accept the results of information processing requests • Cathode-ray tube (CRT) • Liquid crystal display (LCD) • Laser printer • Ink-jet printer • Plotter

  11. COMMUNICATION DEVICES • Communication device -Equipment used to send information and receive it from one location to another • Dial-up access • Cable • Digital subscriber line • Wireless • Satellite

  12. COMPUTER CATEGORIES • Computer categories include: • Personal digital assistant (PDA) • Laptop • Tablet • Desktop • Workstation • Minicomputer • Mainframe computer • Supercomputer

  13. SOFTWARE BASICS • System software -Controls how the various technology tools work together along with the application software • Operating system software • Utility software • Application software

  14. UTILITY SOFTWARE • Types of utility software • Crash-proof • Disk image • Disk optimization • Encrypt data • File and data recovery • Text protect • Preventative security • Spyware • Uninstaller

  15. APPLICATION SOFTWARE • Types of application software • Bowser • Communication • Data management • Desktop publishing • Email • Groupware • Presentation graphics • Programming • Spreadsheet • Word processing

More Related