This is a thematic question so there are a number of themes you can consider. One that I find interesting is "language."
Ttechnology is an extremely important tool that the Party uses to maintain control over its citizens. Without telescreens, the Thought Police would not be nearly as effective, and propaganda would not be so widespread. The constant supervision of the telescreen effectively imprisons citizens of Oceania in their daily lives: they are always under observation.
Ironically, other areas of technological development are strikingly stagnant. For example, the printing machines in the Ministry of Truth are still quite basic, and each superstate continues to build the same bombs that were used decades before. Scientific progress has halted, except where it serves the Party's goals (such as in artificial insemination or new methods for psychological manipulation). In the world of Oceania there is no such as thing as progress for the sake of progress; there is only power for the sake of power. When technological developments serve this power, they are encouraged. When they do not, they are stopped. You can check out more themes at the GradeSaver link below: