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Evolution of Computers and IT Gadgets0%
Evolution of Computers and IT Gadgets
Beginner12 min read•Updated: Jul 11, 2026
Evolution of Computers and IT Gadgets (कंप्यूटर का विकास और आधुनिक गैजेट्स)
Computer is an electronic device that takes raw data as Input, processes it according to stored instructions, and produces meaningful Output (Information).
In Hindi, Computer is known as संगणक (Sanganak). Today, computers and IT gadgets have become an essential part of our daily life, education, and government services in India.
Click to Zoom1. History of Calculating Devices (शुरुआती गणना यंत्र)
Before modern electronic computers were invented, humans developed mechanical devices to calculate numbers faster:
- 1Abacus (लगभग 3000 BC - चीन): The world's first mechanical calculating device. It uses beads on parallel wires to perform basic addition and subtraction.
- 2Napier's Bones (1617 - John Napier): Used numbered rods for multiplication and division.
- 3Pascaline (1642 - Blaise Pascal): The first mechanical adding calculator (पहला मैकेनिकल कैलकुलेटर) that worked on gears and wheels.
- 4Difference Engine & Analytical Engine (1822 & 1837 - Charles Babbage):
- Charles Babbage is honored as the "Father of Computer" (कंप्यूटर के जनक).
- His Analytical Engine had all key components of modern computers: Input, Mill (Processor), Store (Memory), and Output.
- 1Lady Ada Lovelace: World's First Computer Programmer. She wrote the first algorithm for Babbage's Analytical Engine.
- 2Herman Hollerith (1890): Invented Tabulating Machine using Punch Cards. He later founded the company that became IBM (International Business Machines).
2. The 5 Generations of Computers (कंप्यूटर की 5 पीढ़ियां)
In the NIELIT CCC exam, questions on computer generations and their main switching components are asked frequently. Remember this table carefully:
| Generation | Period | Main Electronic Component (मुख्य पुर्जा) | Memory / Storage | Programming Language | Famous Computers |
|---|---|---|---|---|---|
| 1st Gen | 1940 – 1956 | Vacuum Tubes (वैक्यूम ट्यूब) | Magnetic Drum | Machine Language (0 & 1) | ENIAC, EDVAC, UNIVAC 1 |
| 2nd Gen | 1956 – 1963 | Transistors (ट्रांजिस्टर) | Magnetic Core & Tape | Assembly, FORTRAN, COBOL | IBM 1401, CDC 1604 |
| 3rd Gen | 1964 – 1971 | Integrated Circuits (IC चिप) | Semiconductor Memory | High-Level (BASIC, Pascal, C) | IBM 360, PDP-8 |
| 4th Gen | 1971 – Present | Microprocessor (VLSI / LSI) | Semiconductor (RAM, ROM, SSD) | C++, Java, Python, SQL | IBM PC, Apple Mac, Laptops |
| 5th Gen | Present – Future | AI & Ultra Large Scale (ULSI) | Optical & Cloud Storage | Natural Language Processing (AI) | Param Supercomputer, Robots |
Note
- ENIAC (Electronic Numerical Integrator and Computer) was the world's first general-purpose electronic digital computer (invented by J. Presper Eckert and John Mauchly).
- IC (Integrated Circuit) was invented by Jack Kilby and Robert Noyce. IC chips are made of Silicon (सिलिकॉन).
- India's first indigenous supercomputer is PARAM 8000, developed by C-DAC Pune in 1991 under the leadership of Dr. Vijay Bhatkar.
3. Classification of Computers by Size and Capacity
Computers are classified into four main categories based on size, cost, and speed:
- 1Microcomputers (Personal Computers - PC):
- Designed for single individual use (Laptops, Desktops, Tablets, Smartphones).
- Powered by single-chip microprocessors (Intel Core i3/i5/i7, AMD Ryzen).
- 1Minicomputers (Midrange Computers):
- Multi-user computers capable of supporting 10 to 100 users simultaneously.
- Used in small businesses, colleges, and laboratory data processing.
- 1Mainframe Computers:
- Giant high-performance systems supporting thousands of users simultaneously.
- Used for centralized massive transactions in Banks (SBI, PNB), Insurance (LIC), and Indian Railways (IRCTC Reservation).
- 1Supercomputers (सुपरकंप्यूटर):
- The fastest, most powerful, and most expensive computers on earth.
- Speed is measured in FLOPS (Floating Point Operations Per Second).
- Used in weather forecasting (मौसम भविष्यवाणी), satellite launching (ISRO), defense research (DRDO), and nuclear simulations.
- Examples: Frontier (USA - World's fastest), AIRAWAT & PARAM Siddhi-AI (India).
4. Modern IT Gadgets in Daily Life
Today, computing is not restricted to bulky desktop monitors. Smart IT gadgets surround us:
- Smartphones: Powerful pocket computers with touchscreen, GPS, camera, and internet banking.
- Smartwatch & Fitness Trackers: Wearable gadgets that track heart rate, steps, and sleep cycles.
- Tablets (iPad / Android Tab): Portable touchscreen devices ideal for digital note-taking and reading.
- Smart TV: Television with built-in operating system (Android TV) capable of streaming YouTube, Hotstar, and Netflix.
- Drones: Unmanned Aerial Vehicles (UAVs) used for aerial photography, agriculture crop spraying, and surveillance.
Interactive Quiz
Multiple Choice Questions
Question 1
Who is considered the "Father of Computer"?
Question 2
Which electronic component was used in the First Generation of computers?
Question 3
What is the name of India's first indigenous supercomputer developed by C-DAC?
Question 4
Integrated Circuit (IC) chips used in 3rd Generation computers are primarily manufactured using which material?
Question 5
Which type of computer is used by Indian Railways (IRCTC) and major banking networks to process millions of transactions simultaneously?
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Applications of Computers in Daily Life
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| None | Applications of Computers in Daily Life |
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