In
this course we are going to learn some of the basics knowledge which has been
using in IT.
Information technology (IT) is the use of computers, networks, and software to
store, retrieve, process, and protect data. The core pillars of IT include
physical hardware, operational software, structured data management, and secure
communication networks.
Hardware and Software
· Hardware: The
physical parts like the CPU, memory (RAM), and input/output devices.
· Systems Software: Operating
systems like Windows or Linux that manage hardware.
· Application
Software: Programs like word processors or web browsers built for users.
· Binary Base: Computers
process everything using 1s and 0s (on and off electrical states).
Networks and the Internet
· Local Area
Networks (LAN): Connect devices in a single office or home.
· Wide Area
Networks (WAN): Connect large networks across cities or countries.
· The Internet: A
massive global network linking smaller networks together.
· Cloud Computing: Storing
and running programs on remote internet servers instead of local drives.
Data and Security
· Data vs.
Information: Raw numbers become meaningful information after processing.
· Databases: Organized
systems used to store and query large sets of data.
· Cybersecurity: Tools
like firewalls, antivirus programs, and passwords used to block threats