How to learn English? Lectures of English Learning.
Discovering Computers
A Gateway to information
Chapter No.1
Introduction to Computers
A World of computer literacy?
Knowledge and understanding of computers and their uses.
Computers are everywhere.
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Discovering Computers
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Discovering Computers Lecture No.1
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Introduction to Computer Science
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Introduction to Computers Text Books
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Introduction to Computers Reference Books
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Introduction to Computers Assessment Criteria
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Introduction to computers Sessional 15%
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Introduction to computers Mid
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Introduction to computers Final
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Recognize the importance of computer literacy.
Define the term computer and identify its components.
Explain why a computer is a powerful tool.
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A World of computer literacy?
Knowledge and understanding of computers and their uses.
Computers are everywhere.
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What is a computer?
How is a computer defined?
Electronic device operating under the control of instructions stored in its own memory.
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What is a computer?Input, output, process, storage, communication
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The Components of a computer.What is an input device?Hardware used to enter data and instructions.
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The component of a computer.What is an output device?Hardware that conveys information to a user.
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The components of a computer.
What is the system unit?
Box-like case containing electronic components used to process data.
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The components of a computer.What are two main components on the motherboard?Central Processing Unit (CPU)Also called a processor carries out instructions that tell computer what to do.
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The components of a computer.What is storage?Holds data, instructions, and information for future use.Storage media Physical material on which data, instructions and information are stored.storage device Records and retrieves items to and from a storage medium
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The components of a computer.
What is storage media?
Portable, thin memory cards used in:
Digital Cameras.
Handheld computers.
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The components of a computer.
What is a floppy disk?
Thin, circular, flexible disk enclosed in rigid plastic shell.
A USB flash drive is portable, and has much greater storage capacity.
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The components of a computer.
What is a flash drive?
Provides much greater storage capacity than a floppy disk or zip disk.
Small and lightweight enough to be transported on a key chain or in a pocket.
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What is hard disk? Provides much greater storage capacity than a floppy disk or USB flash drive.Housed inside the system unit.
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What is a Compact disc?
Flat, round, portable metal disc,
CD-ROM
CD-RW
DVD-ROM
DVD+RW
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What is a computer so powerful?What makes a computer powerful?Storage, reliability and consistency, speed, accuracy, communications
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What is a network? Collection of computers and devices connected together.
Communications device, Communications media, Enables a connection between computers
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Networks and the internet.
What are the reasons to network?
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Networks and the internet.What is a server?Manages the resources on a network.A client access the resources on the server.
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What is the internet?
Worldwide collection of networks that connects millions of computers.
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Why do users access the internet?
Communications, information, shopping, banking and investing, classes, entertainment.
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What is the web?
Billions of documents, called web pages, available to anyone connected to the internet.
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Computer Software.
How do you install a software program?
A program is a series of instructions that tells the computer what to do.
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What is a graphical user interface (GUI)?
Allows you to interact with the software using graphics and icons.
Controls how you enter data and how the screen displays information.
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Computer Software.
What is system software?
Programs that control the operations of the computer and its devices.
Operating system (OS) is a set of programs that coordinates all activities among computer hardware devices and allows users to run application software.
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What is application software?
Programs that perform specific tasks for users.
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What is a programmer? Someone who develops application or system software.
Programmer writes instructions to direct computer to process data into information.
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categories of computers.
What are the categories of computers?
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Personal computers.
What are the two most popular series of personal computers?
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Personal computers.
What is a desktop computers?
Designed so all of the components fit on or under a desk or table.
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Personal Computers.
What is a notebook computer?
Portable, small enough to fit on your lap.
Also called a laptop computer.
Generally more expensive than a desktop computer.
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Handheld computers.
What is a tablet PC?
Resembles a letter-sized slate.
Allows you to write on the screen using a digital pen.
Especially useful for taking notes.
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Handheld computers.
What are web enabled handled computers?
Allow you to check email and access the internet.
Web enabled telephone is a "smart phone".
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Handheld computers.
What is a handheld computer?
Small enough to fit in your hand.
Used by mobile employees such as meter readers and delivery people.
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What is a personal digital assistant (PDA)?
Provides personal organizer functions.
Calender, appointment book, address book, calculator, notepad
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Servers.
What types of servers are there?
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Elements of an information system.
What are information system elements?
People, procedures, data, software, hardware.
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Examples of computer usage.
What are five categories of computer users?
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Examples of computer usage?
What software is available for a home user?
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Examples of computer usage.
What software is available for a small office/home office (SOHO) user?
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Examples of computer usage.
What is available for a mobile user?
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Examples of computer usage.
What are the needs of the large business user?
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What are the needs of a power user?
Speed and large amounts of storage, types of power users.
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Computer applications in society.
What are some examples of computer applications in society?
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Summary of introduction to computers.
To importance of computer literacy.
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