AI History Timeline — Key Dates You Must Know for CCAT
CCAT-style exams love timeline questions — "In which year was X invented?" or "Match the event to the year." Here's a tight, memorizable rundown of AI's milestones.
The Foundational Years
| Year | Event | Why It Matters |
|---|---|---|
| 1943 | McCulloch & Pitts propose a mathematical model of a neuron | First mathematical neuron model |
| 1950 | Alan Turing publishes "Computing Machinery and Intelligence" | Introduces the Turing Test |
| 1951 | Christopher Strachey writes a checkers-playing program | First AI game program |
| 1956 | John McCarthy coins "Artificial Intelligence" at the Dartmouth Conference | Birth of AI as a formal field |
| 1958 | Frank Rosenblatt invents the Perceptron | First neural network model |
Exam tip: 1956 (Dartmouth) is the single most-tested date in AI history questions — memorize it cold.
Expert Systems Era
| Year | Event |
|---|---|
| 1965 | DENDRAL — first expert system (chemical analysis) |
| 1969 | Shakey — first general-purpose mobile robot (Stanford) |
| 1972 | PROLOG created — logic programming language for AI |
| 1980s | Commercial boom of expert systems |
AI Winters — Don't Skip These
Exam questions sometimes ask about periods when AI funding/interest collapsed:
- 1st AI Winter (1974–1980): Overpromised results led to funding cuts.
- 2nd AI Winter (1987–1993): Collapse of the expert systems market.
- AI Spring (2012–present): Deep learning revolution driven by big data and GPUs.
Modern Milestones
| Year | Event |
|---|---|
| 1997 | IBM Deep Blue defeats chess champion Garry Kasparov |
| 2002 | Roomba — first commercially successful robotic vacuum |
| 2005 | STANLEY wins the DARPA Grand Challenge (autonomous driving) |
| 2006 | Geoffrey Hinton introduces Deep Belief Networks |
| 2011 | IBM Watson wins Jeopardy! |
| 2012 | AlexNet triggers the CNN revolution in computer vision |
| 2016 | AlphaGo defeats Go champion Lee Sedol |
| 2017 | Transformer architecture introduced by Google |
| 2018 | BERT — bidirectional language model released |
| 2020 | GPT-3 launches with 175 billion parameters |
| 2022 | ChatGPT launches, hits 1 million users in 5 days |
Key Figures to Match with Contributions
| Name | Contribution |
|---|---|
| Alan Turing | Turing Test, foundations of computation |
| John McCarthy | Coined "AI," invented LISP |
| Marvin Minsky | Co-founded MIT AI Lab |
| Frank Rosenblatt | Invented the Perceptron |
| Geoffrey Hinton | Deep learning, backpropagation |
| Yann LeCun | CNNs |
| Yoshua Bengio | Deep learning research |
Quick memory trick: Hinton, LeCun, and Bengio all share something — they jointly won the 2018 Turing Award for deep learning. Exam-setters love this trio question.
Practice Angle
Try covering the "Why It Matters" column and quizzing yourself on just the year and event — that's the exact format CCAT tends to use for history-based MCQs.
Next post: the AI vs ML vs DL distinction — one of the most frequently tested conceptual questions on this exam.