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Module 0 resources. Presented by: Osacr Abagali Nkrumah Duncan Williams Gerard Ataogye Anthony Sarpong On 14/03/2013. Module activity unit 1: computer ;networks. What is a computer?.

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Module 0 resources

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  1. Module 0 resources Presented by: OsacrAbagali Nkrumah Duncan Williams Gerard Ataogye Anthony Sarpong On 14/03/2013

  2. Module activity unit 1: computer ;networks

  3. What is a computer? • A computer is a general purpose device that can be programmed to carry out a finite set of arithmetic or logical operations.

  4. WHAT ARE THE DIFFERENT TYPES OF COMPUTER? THE TYPES DEPEND ON: • 1. Configuration/classes: the size and structure • 2. Operation: the electrical / electronic signal that is used to operation.

  5. 1. Configuration: the size and structure

  6. 2. Operation principle: signal used: Analogue :set of varying voltagesDigital :uses set of 0 and 1 or off state and on stateHybrid: use both forms of signals http://home.olemiss.edu/~misbook/ss14.htm

  7. Microcomputers / personal computers: . Popular uses for microcomputers include word processing, surfing the Web, sending and receiving e-mail, spreadsheet calculations, database management, editing photographs, creating graphics, and playing music or games. desktop computers ,notebook computers, laptops, iPads, iPods, palmtop, programmable calculators, mobile phones, Tablet Computers and Smartphones , PDAs and Palmtop Computers A minicomputer is a multi-user computer that is less powerful than a mainframe. A mainframe computer is a large, powerful computer that handles the processing for many users simultaneously (up to several hundred users). Supercomputer (this one is a Cray-2 from the 1980’s) A supercomputer is mainframe computer that has been optimized for speed and processing power.

  8. Hard ware • Computer hardware is the collection of physical components that make up a computer, for example, a screen, a cpu, laptop, mouse, keyboard, mother board, memory chip as RAM, ROM, ports, circuit boards, power supplies, and cooling fans, video monitor, camera, or printer etc http://windows.microsoft.com/en-us/windows-vista/introduction-to-computers

  9. An output device Is any peripheral device that converts machine-readable information into people-readable form such as a monitor, printer, plotter and voice output device. Input devices: These devices allow users to interact with the applications that the computer displays: Mouse Scanner CD/DVD Device Writing Tablet And Stylus Touchscreen Web Camera SD Card Joystick Microphone Bar Code Scanner Monitors Printers Plotters Voice Output Devices Modems

  10. Software; what is it? • Software is a generic term for organized collections of computer data and instructions System software • is responsible for controlling, integrating, and managing the individual hardware components of a computer system so that other software and the users of the system see it as a functional unit. Example window XP, windows 7, Linux, Mac osx, Unix etc. It consist of • System Management Programs: operating system, communications software and database manage. • System Development Programs • System Support Programs

  11. Features of system software • Disk formatters, file managers, display managers, text editors, memory management • Interface for user communication • User authentication (login) and management tools, • Networking and device control software. • System utility programs, system performance monitor programs, and system security monitor programs

  12. Application software • May consist of a single program used to accomplish specific tasks, e.g a spreadsheet or text processing Main type: • General-Purpose Application Programs • Application-Specific Software Examples: Word Processing Package, spreadsheet Packages, Database Management Packages , Graphics Packages , Communications Packages , Integrated Packages etc

  13. Summary of the computer software- user relation

  14. Soft ware license; why? • The software's license gives the user the right to use the software in the licensed environment. • Protect the patency of software • Some software comes with the license when purchased off the shelf, or an OEM- original equipment manufacturer- license when bundled with hardware. • Free software license, granting the recipient the rights to modify and redistribute the software. • Freeware/ trial version or shareware for a period of time say 30 days .

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