The first Stored program computer that I wrote programs for in 1961:

 

The Illiac I

It went on line on September 22, 1952. With the computing power of a modern-day handheld calculator, Illiac had 2,800 vacuum tubes and weighed 10,000 pounds. It was more than 10 ft long, 2 ft deep, and 8 ft high, with a 4k(words) main memory and 12k(words) Drum memory.

Now, just 43 years later, I am sitting at a relatively inexpensive 2.6 GHz, 1 Gb ram, 110 Gb Hard drive Dell computer - 1 of several in my broadband wireless network. 

My aircraft engine was designed 60 years ago and needs a computer badly since the one that sits on my shoulders can't quite optimize each combustion event.

Some things advance more rapidly than others.

And a Hand Held Calculator.