In the past few of decades, the rate in which technology has developed has been crazy, however it's easy to forget and take for granted just how far we've come. Take the below image for example, the file size of the entire image is 283KB, a size that we would think nowadays to be hardly anything. Yet when Super Mario Bros came out in 1985, the entire game was just 40KB - 1/7 of what that image is below.
This is a testament to programmers of previous generations. All the audio and video elements in games from that era were generated purely by code, and not rasterized assets like they are nowadays. Incredible.
Please note: We are aware the image isn't exactly 283KB. The point is still valid.