Computers have their limits. Tracking systems rely on sensors more than they rely on the computers that process the signals from their sensors. And cloaking systems rely more on sensor and material technology than on computer technology.
We already have that last one though. However, e-readers confuse people since the average person has no real clue about computers. People are unaware of how to use computers, or their capabilities. Some buy a top-tier $4000 gaming PC to run Facebook and Youtube, while people like my father-in-law cannot figure out why the 8088 he pulled from the dump 20 years ago cannot read DVDs or his handwriting.
The one upgrade I think will need is to upgrade society to one that is educated, mentally flexible/adaptable, and otherwise ready for the late-20th-century. Many parts of the world have that already, but the US with our lackluster education and egotistical insistence that the world adapt to us, we will continue to fall behind technologically simply because the rest of the world is capable of advancement but we refuse to adapt.