Internet Resources by Ashraf Siddiqui

Category: Education

Presentation Description

No description available.


Presentation Transcript



Slide 2:

Learning Resources Useful Resources for learning purpose: - http :// http :// / http ://

Multimedia Projector:

Multimedia Projector - Traditional blackboard is a static resource for a teacher. - Provide teachers with opportunities to represent and express their prior knowledge Multimedia applications engage students and provide valuable learning opportunities . Saves valuable time of a teacher in creating complex drawings - Create personally meaningful learning opportunities.

Slide 4:

Oh! No multimedia available ?

Slide 5:

Applications and uses of Computers in Education Students - Learn at their own pace - Slightly older children benefit from edutainment - Computer based tutorial - Computer Simulation Simulation games Parents - Monitor students courses, results, attendance, activities, etc. - Email Teachers - Testing - Maintain grades - Develop lesson plans - Create homework assignments - Research Schools - Maintain student records - Assign students to classes and rooms, maintain result history - Pay employeesSchools - Maintain student records - Assign students to classes and rooms, maintain result history - Pay employees


Computer? Computers are automatic, electronic machines that accept data & instructions from a user (INPUT) store the data & instructions (STORAGE) manipulate the data according to the instructions (PROCESSING) store &/or output the results to the user (OUTPUT)

Basic Units of Measurement:

Basic Units of Measurement BIT is a unit of information equivalent to the result of a choice between only 2 possible alternatives in the binary number system. BYTE is a sequence of 8 bits (enough to represent one character of alphanumeric data) processed as a single unit for information.

Basic Units of Measurement:

Basic Units of Measurement A byte can be used to represent a single character, which can be: A letter A number A special character or symbol, or A space

Basic Units of Measurement:

Basic Units of Measurement 1024 bytes =1 kilobyte (K or KB) 1024 KB =1 megabyte (MB) 1024 MB =1 gigabyte (GB) 1024 GB =1 Terabyte (TB) 1024 TB =1 Petabyte (PB) 1024 PB =1 Exabyte (EB)


BASIC PC HARDWARE HARDWARE is the tangible part of a computer system.

Basic hardware of a PC system:

Basic hardware of a PC system Central Processing Unit (CPU) Memory Unit Input Devices Output Devices Secondary Storage Devices

1. Central Processing Unit:

1. Central Processing Unit Brain of the computer. It directs and controls the entire computer system and performs all arithmetic and logical operations.

2. Memory Unit:

2. Memory Unit Where the programs and data are stored . READ ONLY MEMORY (ROM) contains the pre-programmed computer instructions such as the Basic Input Output System (BIOS). RANDOM ACCESS MEMORY (RAM) is used to store the programs and data that you will run. Exists only when there is power.

3. Input Devices:

3. Input Devices Allows data and programs to be sent to the CPU. Keyboard Mouse Joystick Microphone Webcam Scanner Monitor


Keyboard Traditional keyboards Flexible keyboards Ergonomic keyboards Wireless keyboards PDA keyboards

Two Types of Mouse:

Two Types of Mouse Mechanical  - a type of computer mouse that has a rubber or metal ball on its underside and it can roll in every direction.  Optical:   This type uses a laser for detecting the mouse's movement. 

Other Pointing Devices:

Other Pointing Devices Trackball Track point Touch pad Touch Screen

Slide 20:

Joystick – input device for computer games Light Pens – light-sensitive penlike device Stylus – penlike device commonly used with tablet PCs and PDAs.

Scanning Devices:

Scanning Devices Optical scanners Card readers Bar code readers Character and mark recognition devices

Image Capturing Devices:

Image Capturing Devices Digital Cameras Digital Video Cameras

4. Output Devices:

4. Output Devices Media used by the computer in displaying its responses to our requests and instructions. Monitor Audio Speakers Printer

Types of Monitor:

Types of Monitor Cathode Ray Tube (CRT) Liquid Crystal Display (LCD) Light Emitting Diode (LED)


Printers IMPACT PRINTERS uses pressure by physically striking the paper. Ex. Daisy wheel printers, line printers, dot matrix printers & band printers. NON-IMPACT PRINTER does not apply pressure on the paper but instead produces character by using lasers, ink spray, photography or heat.

Slide 26:

Dot matrix printer Inkjet printer Laser printer

5. Secondary Storage Devices:

5. Secondary Storage Devices Attached to the computer system to allow you to store programs and data permanently for the purpose of retrieving them for future use. USB/Flash Drives, Hard disk, CD Rom


Kinds Blue Ray Disk – 40G Digital Versatile Disk DVD-R – write once, 3.95G DVD RW – rewritable, 3G Single Layer and Double Layer Compact Disk CD-R – write once, 650MB CD-RW – rewritable, 700MB

Parts that Build Up A System Unit:

Parts that Build Up A System Unit Casing or cover Power Supply Motherboard Microprocessor Memory Video Card Sound card Floppy disk drive Hard disk drive CD-ROM drive MODEM


Software Instructions that tell the computer how to process data into the form you want. Software and programs are interchangeable. Two major types: System and Applications

2 Kinds of Software:

2 Kinds of Software 1. System Software enables the application software to interact with the computer hardware. Operating Systems are programs that coordinate computer resources, provide an interface between users and the computer; and run applications. Utilities perform specific tasks related to managing computer resources. Device drivers are specialized programs designed to allow particular input or output devices to communicate with the rest of the computer system.

Functions of a System Software:

Functions of a System Software Managing resources (memory, processing, storage, and devices like printer). Providing user interface Running applications

2 Kinds of Software:

2 Kinds of Software Applications Software - provides the real functionality of a computer. It help you use your computer to do specific types of work. Basic Applications, widely used in all career areas. Specialized Applications, more narrowly focused on specific disciplines and occupations.


FILES FILE is simply a collection of information that you store on a disk or diskette. Must have a unique name Two parts: the filename and extension separated by a period. RECIPE.DOC


EXTENSIONS Use extension to make your filenames more descriptive. .DOC – word documents .XLS – excel documents .PPT – powerpoint documents

authorStream Live Help