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  Introduction to Computers and IT
NOTE: Most of the contents presented on this page are taken from book "Using Information Technology" by William Sawyer Hutchinson. The content presented here is just for educational purpose.

Class Lectures

Lecture-1

What is a Computer? - What is Computer Program? - Programmable - Data - Data Processing - Information - Computer Examples - Digital Computers - Analog Computers - Hybrid Computers - Special Purpose - General Purpose - Mainframe computers - Super computers - Single Processor - Multiprocessor - History of Computers - Abacus - What is an Algorithm ? - What is a Program ? - What is a Programming Language ?

Lecture-2

Turning On the computer - Introduction to Word Pad - Typing Letter - Saving Letter - Getting Help - Paint Brush

Lecture-3

Input/output Operations - Logic/comparison operations - Storage and Retrieval operations - Communication - Networks - Broadcast networks - Communication networks - Silicon - Microcontrollers - Microcomputers - Personal computers - Notebook - Subnotebook - Palmtop computers - Laptop - Workstations - Servers - Client-Server Network

Lecture-4-5

Computer Hardware - Keyboards - POINTING DEVICES - Pen-Base Systems - Scanning Devices - Bar code readers - Optical character recognition OCR - Fax Machines (facsimile transmission machine) - Fax modems - Imaging Systems - Sensors - VGA cards - Printers - Videoconferencing - Virtual-Reality devices - Simulator devices - Robots - Smart cards - Touch Screens - Software - Application Software - System Software - Disk Operating System DOS

Lecture-6

Computer Hardware - Vacuum Tubes - Transistors - Logic Gates - Circuit - Central Processing Unit (CPU) or Processor - Integrated Circuit - Control Unit - Arithmetic/Logic Unit - Primary Storage (Main Memory) - REGISTERS - Binary System - Capacity Representation - Bit - Byte - Kilobyte - Megabyte - Gigabyte - Terabyte - Machine Language - Motherboard - RAM Chip - ROM Chip - Cache Memory - Flash Memory -

Lecture-7

Computer Software - Application Software - Software - Application Software - Custom software or Project - Packaged software, or software product - Version - Release - User Interface - Menus - windows - Icons - Buttons - Dialog Box - Cursor - Scrolling - Word wrap - Spread sheets - Copyright - Piracy - Plagiarism

Lecture-8

Diskettes - Hard disks - Optical disks - Flash-memory cards - Magnetic tape - Online storage - Tracks - Sectors - Unformatted disk - Formatting - Fragmentation - Defragmentation - Virtual Memory - RAID storage System - Optical disks - CD-R - CD-RW - PCMCIA - Lossless Compression - Lossy Compression - JPEG - MPEG

Lecture-9

Communications - Voice Mail - The Internet - Internet Service Provider ISP - Internet Address - The World Wide Web - Hypertext

Lecture-10

Hypertext markup language (HTML) - Web sites - Web pages - Web browsers - Web Surfing - URL �the website address - Search Engines - Plug-ins - Proxy Server - Caching

Lecture-11

System Software - Operating System - Booting - Command driven interface -

Lecture-12

Computer crime - Worms - Virus - Types of viruses - Boot-sector - Logic bomb - Trojan Horse - Hackers and crackers -


  

Exams

Practice Problems

Sessional-1

Sessional-1 Solution

Sessional-2

Sessional-2 Solution

Final Exam

Final Exam Solution

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