Random conversation in Matt McGrath’s office a couple years ago after reading Nick Chrisman’s book we all knew

The Calcomp 560 drum plotter was one of the first computer graphics output devices

• The Calcomp 560 drum plotter was one of the first computer graphics output devices

• A computer could control in 0.01 inch increments the rotation of a 12 inch wide drum and the horizontal movement of a pen holder over the drum
• A solenoid pressed the pen against paper scrolling across the drum

• IBM sold the Calcomp 565 as the IBM 1627

• The first non-IBM peripheral that IBM allowed to be attached to one of its computers

Tony Hoare (Elliot Brothers) invents the Quicksort algorithm

• Tony Hoare (Elliot Brothers) invents the Quicksort algorithm

• One of the most widely used sorting algorithms

• Edsger Dijkstra (Eindhoven) invents an algorithm for solving single-source shortest paths