Cloud_Local_Storage_Input_Ouput_Software.pdf
- 1. INFORMATION TECHNOLOGY Merits of Cloud & Local Storage Input & Output Devices Different Types of Software
- 2. Objectives • Evaluate the relative merits of cloud storage and local storage: • Capacity • Cost • Accessibility • Security Issues • Selecting appropriate Input and Output Devices • Explain the role of the different types of software in computer operations: • System Software • Application Software
- 3. CLOUD AND LOCAL STORAGE
- 5. Cloud and Local Storage What is the cloud? • Cloud storage is a model in which data is stored on remote servers and can be accessed only via the Internet.
- 6. Cloud and Local Storage • Local storage is any physical storage device directly connected, internally or externally, to the computer system.
- 7. Cloud and Local Storage • Cloud storage can be anywhere in the world and is indirectly connected to the computer hardware via a computer network, usually the Internet. • Cloud storage services allow users to edit, save, synchronize, collaborate and share data via an Internet connection.
- 8. Cloud and Local Storage Some popular applications that uses cloud storage include: • Dropbox • Google Apps • Office 365 • iCloud
- 9. Evaluation Criteria for Choosing Storage Solutions
- 10. INPUT AND OUTPUT DEVICES
- 11. Selecting Appropriate Input and Output Devices • An input device is any specialized hardware peripheral component that allows the entry of data and instructions into a computer. • A peripheral is any hardware device connected to and controlled by the central processing unit
- 12. Types of Input devices • Input devices comes in many different shapes and forms. Input devices gain information in the following ways: • Devices that sense light • Devices that sense sound • Devices that sense pressure and touch
- 14. Input Devices
- 15. Input Devices
- 16. Output Devices • Output is the displaying, playing, printing or storing of the information a computer generates as a result of its processing. • An output device is any device that displays, plays or prints the results of processing operations or status messages related to that processing. • Computer output may be printed on paper/plastic, displayed on a monitor/screen, stored on a secondary storage medium, or presented as audible or video output
- 17. Output Devices Hard Copy vs Soft Copy • Hard copy is a tangible permanent printed output from the computer. • Soft copy is an intangible temporary form of output, as produced by a visual display unit or audio output device
- 18. Output Devices Output Devices that produce printed output • Output devices that produces printed output is otherwise known as printers. • Different types of printer include dot matrix, inkjet, laser, 3D and thermal printer, and plotters. • When comparing printers and plotters it is useful to consider: resolution, print speed, memory capacity and paper tray capacity.
- 19. Graded Activity • Place yourselves into groups of Five(5) or Six(6) to create a creative presentation on ONE(1) of the types of printers below: • Dox matrix printer • Inkjet Printer • Laser Printer • 3D printer • Thermal Printer • Plotter • EACH GROUP WILL BE ALLOTTED 5 minutes to complete the presentation. You will be marked for content, creativity and participation.
- 23. Output on a Screen • A visual display unit (VDU) is the main output hardware component of a computer system that handles the display of a soft copy information that the user sees. • This information may be program output, error messages, data that is being entered at the keyboard, or input from some other input device. • Other common names for the VDU are monitor, cathode ray tube (CRT) and screen. Monitor is commonly used.
- 24. Output on Screen • When selecting a VDU, the user should consider three factors: • Type • Size • Resolution • The resolution of a VDU is the quality of the image displayed. Resolution is measured in pixels. A pixel is a single picture element dot, many of which make up an image. • The higher the resolution, the better the quality of the image produced.
- 25. Produce Audible Output • Speakers, headphones and earphones are all hardware devices that enable the user to hear sounds as they are generated (soft copy) • Audio output is usually required in situations when: • Audio is the primary output method, for example virtual assistants • The user has a visual impairment and relies on sound as the key component of the user interface • The user is playing audio / video, for example during computer gaming, playing music and movies and video conferencing. • Audio is the most appropriate method of providing output, for example when sounding emergency alerts or system notifications.
- 27. Types of Software • Software is the program (set of instructions) that is executed by the hardware. There are two basic types of software. These include: • System Software • Application Software
- 28. Types of Software • System software is the category of software used to operate and maintain a computer system including the operating system, utility programs and program language translators. • An operating system (OS) is a collection of software that manages computer hardware resources and provides common services for computer programs. When the computer is first turned on, the operating system is loaded.
- 29. Types of Software • Examples of Operating Systems include: • Windows (7, 8, 10, 11) • Linux • Mac OS • Android and Apple iOS for smartphones
- 30. Types of Software • Operating Systems have six primary functions.
- 31. Types of Software • A system utility is a specialized program that assists in maintaining and improving the efficiency of a computer system. • These include: • Backup Program • Disk Defragmenter • Disk Error Checker • Disk Cleanup • Antivirus
- 32. Types of Software • Application software is the category of software that performs end user tasks. It performs the useful tasks that organizations and home users rely on, such as: • Writing a letter using a word processor • Creating and sending an email • Managing records in a database • Performing automatic calculations in a spreadsheet • Etc.
- 33. Types of Software • Application software may be regarded as general-purpose or special-purpose (specialized applications) depending on how broadly or narrowly focused its intended tasks are. • A general-purpose application is software that is used to perform a wide range of related tasks. • Integrated package software contains several related programs in one package, for example Microsoft Office. • A special-purpose application is software that is used to perform narrowly focused tasks.
- 35. Sources of Software • Individuals and organizations wanting to obtain and use software can do so in a number of ways. These include: • Off-the-shelf • Customized • Custom-written • Software-as-a-Service
- 37. THANK YOU