Tandy 1000 HX

Back when I was in high school, computer programming was my hobby. I actually did it ouside of classroom for pleasure. After a long time of using my high school's computer lab and computers in department stores, I finally was able to save enough money to buy my own PC. It was Tandy 1000 HX from RadioShack. In those times (late 80s), it was not top of the line, but was decent enough for what I had to do.
Here are the specs: Intel 8088
MS-DOS 2.11
640K RAM (with expension card)
1 Floppy drive (3 1/2" 720K)
1 Parallel port
1 Joystick port
Graphics: CGA (with special Tandy 16-color mode)
Sound: PC Speaker (with special Tandy 3-voice chip)
Basic productivity software built in ROM