Wow, this made my day! As a 13 year old kid, I spent hours pouring over that very exact catalog, dreaming of all of the fun stuff I could do with those cool computers.
After playing on Model III and Model IV's and Commodore 64's and VIC-20's, my parents bought me a TRS-80 Color Computer in 1983. Just like the one in that catalog. 4k of RAM. 4K!
But that little TRS-80 changed my life; it introduced me to the joys of programming. Fast forward 30 years and I still love to program; have had a great career and have spent the past 10 years running a software company.
And it all started in the very same 1983 Radio Shack catalog. Thanks for sharing!