100 Common Full Forms and Their Definitions in Computer — TheStrategicPost (TSP)

Explore 100 essential computer full forms and definitions across hardware, software, networking, and programming. A complete TSP guide for students, tech learners, and professionals.

💻 Introduction

In the fast-evolving world of technology, computers have become the backbone of modern civilization. But with every innovation comes an ocean of acronyms and abbreviations — from CPU and RAM to API and AI.

This guide by TheStrategicPost (TSP) brings together 100 of the most common computer-related full forms, neatly categorized and simplified for learners, IT professionals, and digital enthusiasts.

Whether you’re preparing for an exam, working in IT, or simply curious about the language of technology — this comprehensive glossary will strengthen your foundation.

🧾 100 Common Computer Full Forms and Their Meanings

No.	Acronym	Full Form	Definition / Meaning
1	CPU	Central Processing Unit	The brain of the computer, responsible for executing instructions.
2	RAM	Random Access Memory	Temporary storage that provides fast read/write access for running processes.
3	ROM	Read-Only Memory	Non-volatile memory storing firmware and boot instructions.
4	HDD	Hard Disk Drive	Magnetic storage device used for storing data permanently.
5	SSD	Solid State Drive	Faster flash-based storage with no moving parts.
6	USB	Universal Serial Bus	A standard connector for peripherals and data transfer.
7	GUI	Graphical User Interface	Interface allowing users to interact via icons and visuals.
8	CLI	Command Line Interface	Text-based interface where users input commands directly.
9	LAN	Local Area Network	Connects computers within a small area like an office or home.
10	WAN	Wide Area Network	Connects multiple LANs over large distances.
11	HTTP	Hypertext Transfer Protocol	Transfers web data between client and server.
12	HTTPS	Hypertext Transfer Protocol Secure	Secure encrypted version of HTTP.
13	IP	Internet Protocol	Defines addressing and routing of data packets.
14	TCP	Transmission Control Protocol	Ensures reliable data transmission over networks.
15	UDP	User Datagram Protocol	Faster, connectionless alternative to TCP.
16	URL	Uniform Resource Locator	The web address of a resource on the Internet.
17	HTML	Hypertext Markup Language	Standard language for creating web pages.
18	CSS	Cascading Style Sheets	Controls the layout and design of web pages.
19	XML	Extensible Markup Language	Flexible format for storing and transporting data.
20	SQL	Structured Query Language	Used for managing and querying databases.
21	DBMS	Database Management System	Software that organizes and manages databases.
22	OS	Operating System	Manages computer hardware and software resources.
23	AI	Artificial Intelligence	Machines simulating human intelligence and behavior.
24	ML	Machine Learning	AI subset enabling systems to learn from data.
25	IoT	Internet of Things	Network of interconnected physical devices sharing data.
26	ISP	Internet Service Provider	Company providing internet connectivity.
27	DNS	Domain Name System	Converts domain names into IP addresses.
28	VPN	Virtual Private Network	Secures internet traffic by encrypting connections.
29	FTP	File Transfer Protocol	Transfers files between computer systems.
30	WLAN	Wireless Local Area Network	Wireless version of LAN using Wi-Fi signals.
31	MAC	Media Access Control	Unique hardware address of a network device.
32	NAT	Network Address Translation	Allows multiple devices to share one IP address.
33	RDP	Remote Desktop Protocol	Enables remote graphical access to another computer.
34	SSL	Secure Sockets Layer	Protocol for encrypted communication over the internet.
35	TLD	Top-Level Domain	The last segment of a domain (.com, .net, etc.).
36	SMTP	Simple Mail Transfer Protocol	Protocol used for sending emails.
37	IMAP	Internet Message Access Protocol	Retrieves and syncs emails across devices.
38	POP3	Post Office Protocol 3	Downloads emails from the server to local storage.
39	VoIP	Voice over Internet Protocol	Enables voice calls over the internet.
40	BSoD	Blue Screen of Death	Windows error screen after a fatal crash.
41	DOS	Disk Operating System	Early text-based OS used before Windows.
42	VGA	Video Graphics Array	Display standard for monitors.
43	GIF	Graphics Interchange Format	Image format supporting animation.
44	JPEG	Joint Photographic Experts Group	Image compression format for digital photos.
45	PNG	Portable Network Graphics	Lossless compressed image format.
46	PDF	Portable Document Format	Universal file format for documents.
47	CAD	Computer-Aided Design	Used to design precision drawings or 3D models.
48	ERP	Enterprise Resource Planning	Integrates business management processes.
49	CRM	Customer Relationship Management	Manages customer interactions and data.
50	API	Application Programming Interface	Allows software systems to communicate.
51	SDK	Software Development Kit	Tools used to develop applications.
52	IDE	Integrated Development Environment	Combines tools for writing and debugging code.
53	JSON	JavaScript Object Notation	Lightweight format for data exchange.
54	PHP	Hypertext Preprocessor	Server-side scripting language for web development.
55	ASP	Active Server Pages	Microsoft’s web application framework.
56	MVC	Model-View-Controller	Architectural pattern for web apps.
57	RSS	Really Simple Syndication	Feeds updates from websites automatically.
58	W3C	World Wide Web Consortium	Organization developing web standards.
59	TLS	Transport Layer Security	Encryption protocol for secure communication.
60	JS	JavaScript	Language for creating interactive web content.
61	AJAX	Asynchronous JavaScript and XML	Enables dynamic web updates without reloading.
62	SEO	Search Engine Optimization	Improves website visibility in search engines.
63	SMB	Server Message Block	Protocol for sharing files and printers on a network.
64	SaaS	Software as a Service	Cloud-based software delivery model.
65	PaaS	Platform as a Service	Cloud model offering tools for app development.
66	IaaS	Infrastructure as a Service	Provides virtualized computing resources online.
67	DDoS	Distributed Denial of Service	Attack that overwhelms servers with traffic.
68	DRM	Digital Rights Management	Protects digital media from unauthorized use.
69	WAP	Wireless Application Protocol	Enables mobile devices to access internet data.
70	NFC	Near Field Communication	Allows close-range wireless data exchange.
71	OCR	Optical Character Recognition	Converts scanned text into editable data.
72	VLAN	Virtual Local Area Network	Logically separates network devices on the same LAN.
73	XSS	Cross-Site Scripting	Security flaw allowing malicious scripts in web apps.
74	ZIP	Zone Improvement Plan	U.S. postal code system (used digitally for compression too).
75	WEP	Wired Equivalent Privacy	Early Wi-Fi security standard.
76	ASCII	American Standard Code for Information Interchange	Character encoding standard using binary.
77	GHz	Gigahertz	CPU speed unit = 1 billion cycles per second.
78	MIPS	Million Instructions Per Second	Measures processor speed.
79	BCD	Binary Coded Decimal	Represents decimal numbers in binary form.
80	BIT	Binary Digit	Smallest unit of digital data (0 or 1).
81	CD	Compact Disc	Optical disc for storing data.
82	PSU	Power Supply Unit	Converts AC to DC for computer components.
83	WORM	Write Once Read Many	Storage medium that cannot be overwritten.
84	MODEM	Modulator-Demodulator	Converts digital to analog signals and vice versa.
85	CRT	Cathode Ray Tube	Old display technology used in monitors.
86	LCD	Liquid Crystal Display	Flat display using liquid crystals.
87	LED	Light Emitting Diode	Semiconductor light source for displays and lighting.
88	CU	Control Unit	Directs data flow within the CPU.
89	ALU	Arithmetic Logic Unit	Performs arithmetic and logic operations.
90	CPS	Characters Per Second	Measures printer speed.
91	FORTRAN	Formula Translation	Programming language for scientific computing.
92	COBOL	Common Business Oriented Language	Early language designed for business apps.
93	SMTP	Simple Mail Transfer Protocol	Used to send and route email messages.
94	JSP	JavaServer Pages	Java technology for dynamic web content.
95	LSD	Least Significant Digit	Rightmost digit of a number.
96	MSD	Most Significant Digit	Leftmost digit of a number.
97	CUI	Character User Interface	Text-based interface similar to CLI.
98	GPU	Graphics Processing Unit	Handles rendering and graphical computations.
99	BIOS	Basic Input Output System	Firmware that starts hardware initialization.
100	DNS	Domain Name System	Translates website names into numerical IPs.

🌐 Why Learn These Computer Full Forms?

Understanding these full forms isn’t just for exams — it’s for clarity, confidence, and communication in technology.
When you know the meaning behind technical terms, you:

Decode documentation faster
Improve your digital literacy
Understand how systems work internally
Enhance your professional language in IT and development

❓ Frequently Asked Questions (FAQs)

Q1. What is the most important computer full form to know?
The most essential one is CPU — Central Processing Unit, as it’s the core component of all computing devices.

Q2. What are common internet-related full forms?
Examples include IP, DNS, HTTP, VPN, and URL — all vital for web communication.

Q3. Which full forms are important for programmers?
Programmers often use API, IDE, JSON, PHP, and MVC daily.

Q4. What are hardware-related full forms?
HDD, SSD, RAM, ROM, CPU, GPU, and PSU are key hardware components.

Q5. Which networking full forms should students memorize?
Focus on LAN, WAN, MAC, NAT, DNS, and VPN for strong networking fundamentals.

🧩 Conclusion

The digital world thrives on abbreviations — each representing a core principle of technology.
This TSP Full Form Dictionary helps learners, developers, and enthusiasts navigate the dense web of terms that define the modern computing ecosystem.

Stay tuned for upcoming editions of “Tech Full Forms Series” by TheStrategicPost, where we’ll decode every alphabet in the language of technology — one post at a time.

WhatsApp Channel Button

Join our WhatsApp channel for Latest News and Interactive Information – Support Us By Joining US