Radio Shack was a huge part of Sheldon’s life because of all the great technology tools available. In this scene, Sheldon describes the benefits of having a new computer and tries to convince his mom to purchase one so that they can be more productive. A computer costing $998 in 1989 would be equivalent to about $2000 in 2018 dollars. Sheldon is not initially successful in convincing his mom.
While some technology gains are productivity enhancing, at the end of this episode, we see that the gains aren’t the same for everyone.