Nostalgic Relics of the Computing Past

A couple of days ago, I shared with this esteemed forum a piece of my personal computing history—my first paper.

Today, while sorting through more old boxes of documents, I discovered an important symbolic memento of my journey in computational technology.

The Fortran flowchart scrolls shown below have been with me for the past 48 years. I used them to develop my first professional program and write the first paper for voltage unbalance.

Back then, the Fortran code had to be punched into cards and run on a mainframe computer. Typographical errors were severely penalized!

I’m sure my friend Marcelo Sim?es, FIEEE will quickly recognize one of the annotations at the top of the scroll (his beloved engineering school).

Cheers,

Paulo