Please enable JavaScript.
Coggle requires JavaScript to display documents.
<10.3 IPEKA Puri Informatics Abigail> - Coggle Diagram
<10.3 IPEKA Puri Informatics Abigail>
Computer Network
Definition
A group of computers connected to each other to exchange data and information, which can be simple (2 computers) to large (thousands of computer).
Benefits
Sharing data and information
Sharing hardwares (printers, scanners, etc.)
Faster communication
Time and cost efficiency
Types (Range)
LAN
(Local Area Network) -> small scale
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
Types
Cable
: Wired connection (LAN, Backbone, RJ45, Switch)
Wireless
: Wireless connection (WiFi, Bluetooth, Satellite, Cellphone, IR)
Cellular Networks
Enhances global connectivity and mobile communication
Short-Range Wireless
Connect devices using Bluetooth/WiFi within proximity to transfer data and access internet.
Infrared Technologies
Operates on a line-of-sight basis, used in remote controls and data transfer.
Components:
Hardware: cables, switches, routers, modems
Software: network protocols, operating systems
User: a person who accesses the network
Computer Systems
Definition
A programmable electronic device that can be programmed to accept some
inputs
in terms of data, then
processes
the data and provides the desired
output
.
2 Main Components
Software
Application Program
-> directly used by system users to perform tasks on computers (e.g. word, excel).
System Software -
> programs to manage hardware and provide a platform for softwares.
Operating System
-> internally used by the computer to manage hardware components & provides an interface for running apps (windows, linux).
Hardware
(Mechanical Parts)
1.
Input Unit
-> accept data from input devices like keyboard, mouse, and camera.
Memory Unit
-> store data and program instruction (RAM, hard disk)
Central Processing Unit (CPU)
-> execute computer programs.
Output Unit
-> present processed data in output devices like display monitor and printer.
Brainware (Human Operator):
Programmer
Data Analyst
Graphic Designer
Administrator
General user
Relation:
Brainware determines the task for Software to do.
Software translates the instructions into machine-readable instruction which are going to be executed by Hardwares.
Characteristics
Processing Speed
Accuracy of Operations
Data Storage
Fast Logical Decision
Repetitive Task Ability
Features
Computer is Programmable
Converts Data into Information
Digital Electronic Machine
Executes only Machine instruction
Understand only Binari (0 or 1)
Computational Thinking
Decomposition
Breaking down complex problems into smaller parts to make it easier to address.
Pattern Recognition
Identifying patterns, recognizing recurring themes, applying solutions from similar situations.
Abstraction
Ignore irrelevant details and concentrate on essential feature.
Algoritm
Solve problems by doing a clear step-by-step instruction/solution.
ICT
Google Docs
Google Slides
Google Vids
Google Sheets
Functions
AVERAGE
: Aritmetic mean of a set range.
COUNT
: number of cells with certain condition
LOGICAL
: if, ifs, and, or, xor
MAX, MEDIAN, MIN
: largest, middle, smalles value in a set
SUM
: add all numbers in a range of cells
LOOKUP
: search value of a range and returns the value according to row/column