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10.1 IPEKA Puri Informatics <Clara>, p, e, s, p, o, p, t, e, r, i -…
10.1 IPEKA Puri Informatics <Clara>
Computer Network
Definition: A computer network is a group of computers connected to share data and resources.
Network types Based on Range
LAN
Local Area Network (small scale, e.g. schools).
MAN
Metropolitan Area Network (city scale).
WAN
Wide Area Network (large scale, inter-country).
PAN
Personal Area Network
(around 10m, bluetooth )
CAN
Campus Area Network
(university/campus scale)
SAN
Storage Area Network (dedicated,
high-speed data storage).
Components
Hardware: cables, switches, routers, modems.
Software: network protocols, operating systems.
User: a person who accesses the network.
Network Types
CABLE
Wired Connection (LAN,
Backbone, RJ45, Switch)
WIRELESS
Wireless Connection (WiFi,
Bluetooth, Satellite, Cellphone, IR)
Computer System
Definition: A computer system is a combination of hardware, software, data, and users that work together to perform tasks.
SOFTWARE
System Software → OS (Windows, macOS, Linux)
Application Software → Microsoft Word, Photoshop, Browser
Utility Software → Antivirus, File Manager
HARDWARE
Input devices → Keyboard, Mouse, Scanner
Output devices → Monitor, Printer, Speaker
Storage → Hard drive, SSD, USB
Processing unit → CPU (ALU + CU)
BRAINWARE
Programmer (develops software)
Data Analyst
Graphic Designer
Common User
Administrator
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