Ch 01: History & Generation of Computer

Charles Babbage

Father of Computer

Lady Ada Augusta

First Programmer

ENIAC • 1946

Electronic General-Purpose Computer

Osborne 1 • 1981

First Portable Computer

🧭 Computer History — Master Timeline

2400 BCEAbacus

PDF ke detailed notes me Abacus ka invention Babylonia me bataya gaya hai; familiar form ka use China me lagbhag 500 BCE se.

1642Pascaline — Blaise Pascal

Mechanical calculator; addition aur subtraction tak limited, aur expensive.

1822Difference Engine — Charles Babbage

Automatic mechanical calculator; polynomial functions ko tabulate karne ke liye.

1834 / 1842*Analytical Engine — Charles Babbage

Detailed section 1834 mention karta hai; opening summary me 1842 diya hai.

1840Augusta Ada Byron

Babbage ko binary system use karne ka suggestion; Analytical Engine ke liye programs likhe — First Computer Programmer.

1843Scheutzian Calculation Engine

Per Georg Scheutz; Difference Engine par based; first printing calculator.

1890Tabulating Machine — Herman Hollerith

Information summary aur accounting me assistance ke liye.

1936–1938Z1 — Konrad Zuse

Germany me built; PDF ise first programmable computer ke roop me note karta hai.

1939–1942Atanasoff–Berry Computer (ABC)

Professor John Atanasoff aur Clifford Berry; first electronic digital computing device.

1943Harvard Mark I

IBM Automatic Sequence Controlled Calculator (ASCC); Howard H. Aiken; first electro-mechanical computer.

1946ENIAC

John Presper Eckert aur John Mauchly; first electronic general-purpose computer.

1949Electronic Controls Company

PDF ke anusaar first computer company; founded by John Presper Eckert and John Mauchly.

1952EDVAC

Stored-program computer; source notes Von Neumann as designer and a memory for both program and data.

1981Osborne 1

Osborne Computer Corporation; first portable computer.

📘 Source Note

PDF ke opening summary aur detailed section me kuch dates wording me variation hai. Mind map ne un differences ko hide nahi kiya; jahan zaroori tha wahan dono source entries show ki gayi hain.

🧮 Abacus → Pascaline → Babbage Engines

Abacus

Basic arithmetic calculations ke liye mechanical aid.

Pascaline — 1642

Blaise Pascal; addition & subtraction.

Difference & Analytical Engine

Charles Babbage ke mechanical computing designs.

🧮 Pascaline

Invented by Blaise Pascal in 1642.
Addition aur subtraction tak limited.
Source notes it as too expensive.

⚙️ Difference & Analytical Engine

Automatic, mechanical calculator designed to tabulate polynomial functions.
Difference Engine — 1822.
Detailed section me Babbage engines ke liye 1822 & 1834 diya gaya hai.
Source describes it as the first mechanical computer.

👩‍💻 First Computer Programmer — Augusta Ada Byron

1840 me Augusta Ada Byron ne Babbage ko binary system use karne ka suggestion diya.
Analytical Engine ke liye programs likhe.
PDF opening notes: प्रथम प्रोग्रामर — लेडी एडा ऑगस्टा.
First stored-program concept ke saath source John von Neumann ko note karta hai.

🧾 Scheutzian Engine & Tabulating Machine

Scheutzian Calculation Engine — 1843

Per Georg Scheutz; Charles Babbage ke Difference Engine par based; source ke anusaar first printing calculator.

Tabulating Machine — 1890

Herman Hollerith; information ko summarize karne aur accounting me assistance ke liye.

⚙️ Five Generations — One View

1st Generation

1942–1954

Vacuum Tube

Storage: Magnetic Drum

2nd Generation

1955–1964

Transistor

Storage: Magnetic Core

3rd Generation

1965–1975

IC (Integrated Circuit)

Microchip

4th Generation

1975–1988

VLSI

Semiconductor

5th Generation

1989–Present

ULSI

AI ke saath

1️⃣ First Generation

Circuit ke liye vacuum tubes; memory ke liye magnetic drums.
Machines bahut badi; poore room ko occupy kar sakti thi.
Operation expensive, high electricity consumption aur high heat generation.
Machine language par dependent; ek time me ek problem.
Input: punch cards & paper tape; Output: printout.
Examples: ENIAC, EDSAC, UNIVAC I, UNIVAC II, UNIVAC 1101.

2️⃣ Second Generation

Transistor ne vacuum tubes ko replace kiya.
Source: one transistor ne approximately 40 vacuum tubes ke barabar space replace kiya.
Computers smaller, faster, cheaper, more energy-efficient & reliable hue.
Machine language se symbolic / assembly language ki taraf shift.
Input punch cards; output printout.
Instructions memory me store; magnetic drum se magnetic core technology.

3️⃣ Third Generation

Technology: IC (Integrated Circuit).
User keyboard aur monitor ke through interact karte the.
Operating System ke saath multiple applications chal sakti thi.
Central program memory ko track kar sakta tha.
Smaller aur cheaper hone ki wajah se computers aam users ke liye zyada accessible hue.
Examples: Burroughs 6700, Control Data 3300/6600/7600, Honeywell 200, IBM System/360, System 3, System 7.

4️⃣ Fourth Generation

Microprocessor ne fourth generation ko janm diya.
Ek silicon chip par thousands of integrated circuits.
Smaller computers zyada powerful hue aur networking possible hui.
Source connects this networking development with eventual Internet development.
GUI, mouse aur handheld devices ka development.

5️⃣ Fifth Generation

PDF generation table: 1989 se present.
Technology: ULSI (Ultra Large Scale Integration).
Source table fifth generation ko AI (Artificial Intelligence) ke saath associate karta hai.

🔬 Transistor & IC — Source Notes

Transistor

Semiconductor device; electronic signals aur electrical power ko amplify/switch karne ke liye. Source credits John Bardeen, Walter Brattain & William Shockley (1947) and states silicon-germanium composition.

IC

IC = Integrated Circuit; source notes it as silicon-based and credits J. S. Kilby for its development.

🖥️ Major Early Computers — Visual Gallery

Z1 Computer

Konrad Zuse • Germany • 1936–1938 • First programmable computer (source).

ABC

Atanasoff–Berry Computer • 1939–1942 • First electronic digital computing device.

ENIAC

Completed 1946 • Eckert & Mauchly • Electronic general-purpose computer.

UNIVAC I

Universal Automatic Computer I • First commercial computer (source).

EDVAC

Electronic Discrete Variable Automatic Computer • Stored-program computer.

Osborne 1

Released 1981 • First portable computer (source).

🔢 Z1 & ABC

Z1: Konrad Zuse, Germany, 1936–1938.
Programming ke liye punch tape reader; output bhi punch tape ke through.
ABC: Professor John Atanasoff + graduate student Clifford Berry.
1939–1942, Iowa State University; source: first electronic digital computing device.

⚡ ENIAC

ENIAC = Electronic Numerical Integrator and Computer.
Source: first electronic general-purpose computer.
Completed in 1946.
Developed by John Presper Eckert & John Mauchly.

💼 UNIVAC I

UNIVAC I = Universal Automatic Computer I.
Source: first commercial computer.
Designed by John Presper Eckert and John Mauchly.
Opening summary also lists first commercial computer as UNIVAC and gives 1954.

💾 EDVAC

EDVAC = Electronic Discrete Variable Automatic Computer.
Source: first stored-program computer.
Von Neumann dwara 1952 me designed (as stated in PDF).
Stored program aur data dono ko rakhne ke liye memory.

🧳 Portable Computer & First Computer Company

Osborne 1 — source ka first portable computer.
Osborne Computer Corporation ne 1981 me release kiya.
Source ka first computer company: Electronic Controls Company.
Established in 1949 by John Presper Eckert & John Mauchly.

⚠ Exam Trap — “First” Facts

ABC = electronic digital computing device; ENIAC = electronic general-purpose computer; EDVAC = stored-program computer; UNIVAC I = commercial computer; Osborne 1 = portable computer. Inko ek hi “first computer” fact samajhkar mix mat karna.

⚡ One-Glance Quick Recall

Asked Fact	Answer in Source	Key Year / Point
Father of Computer	Charles Babbage	Difference / Analytical Engine
First Programmer	Lady Ada Augusta / Augusta Ada Byron	1840
First Calculating Machine	Abacus	Source gives Babylon 2400 BCE + China use ~500 BCE
Mechanical Calculator	Pascaline — Blaise Pascal	1642
Difference Engine	Charles Babbage	1822
First Printing Calculator	Scheutzian Calculation Engine	1843
Tabulating Machine	Herman Hollerith	1890
First Programmable Computer	Z1 — Konrad Zuse	1936–1938
First Electronic Digital Computing Device	ABC	1939–1942
First Electro-mechanical Computer	Harvard Mark I	1943 (detailed source)
Electronic General-Purpose Computer	ENIAC	1946
First Stored-program Computer	EDVAC	Source notes 1952
First Commercial Computer	UNIVAC I	Opening summary notes 1954
First Portable Computer	Osborne 1	1981
First Computer Company	Electronic Controls Company	1949

🧠 Generation Mnemonic

⚡ Technology Order

Vacuum Tube → Transistor → IC → VLSI → ULSI/AI
1st → 2nd → 3rd → 4th → 5th generation

⚡ Storage / Associated Tech in PDF Table

Magnetic Drum → Magnetic Core → Microchip → Semiconductor → AI

⚠ High-Confusion Pairs

Difference Engine = 1822; Analytical Engine = detailed section 1834 (opening summary also mentions 1842).
ABC ≠ ENIAC: ABC is described as electronic digital computing device; ENIAC as electronic general-purpose computer.
EDVAC = stored-program; UNIVAC = commercial.
Vacuum Tube = 1st Gen; Transistor = 2nd; IC = 3rd; VLSI = 4th; ULSI + AI = 5th.