CHARTCRAFT Chartcraft · May 2026 · ~4 min
From ticker tape to GPU: a century of the price chart
A century ago, traders watched a clicking strip of paper — the ticker printed the latest trades on a narrow tape, and reading it was a craft. Today the same kind of people watch millions of candles rendered live by a GPU. The medium keeps changing; the human doing the reading does not.
Three leaps
- Tape and pencil: quotes read by people, charts drawn by hand — point-and-figure and line charts born of pencil and graph paper;
- Screens and electronic quotes: prices go on-screen, charts refresh instantly, indicators begin to compute themselves;
- GPU and cloud: vast tick data pans and zooms without dropping frames, backtests run in the cloud, the chart becomes a programmable canvas.
Tools let us see faster; seeing clearly still depends on the person.
Faster is not clearer
Technology squeezed latency from minutes to milliseconds and expanded the visible past from a few pages to decades. But more data also means more noise. Tools solved seeing; understanding remains the user's homework.
Further: what that GPU-rendered candle looked like three centuries ago — see Birth of the candlestick. On not drowning in noise as data grows, see The limits of technical analysis.