The earliest version of the Quotron required that you type in a stock symbol and push the enter button before the current price would appear. Otherwise, the screen was blank. Later versions, which you’ve probably seen, display an entire portfolio and the prices for all the stocks, which are updated automatically as the day’s trading progresses. The blank screen was a better system because you couldn’t stare at it all day and watch your stocks go up and down, as many contemporary fund managers do. When I got a newfangled Quotron, I had to turn it off because it was too exciting.
