QDOS in a Laboratory

the beginning there was a little Casio calculator. Being a laboratory for food and water analysis, we needed many calculations. We did what everybody else did, used a calculator. Much of what was put into the calculator was the same every time. Our chemist, Ole Haukeland, bought a programmable Texas calculator to put formulas into. Now we did not need to enter the same things all the time, saving much typing and preventing many errors. But using this calculator meant you had to remember where to enter the numbers.