From fixed-program calculators to Turing's stored-program insight — every computation reduces to six primitive operations.
Short drills on what this video just taught. Write the code, run the checks, and reveal the answer only if you are stuck.
A computer's memory is a grid of numbered locations, each holding a value. A Python variable plays the same role: the name is the address, and the value is what's stored there.
Pretend address 3456 should hold the number 3, just like the machine in the video. Assign 3 to mem.