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.