system
Given the following post, respond as if you're commenting on Reddit:
human
Why is it that you can only make memory cards with powers of base 2? (eg.128,256,512,1024 etc.)
gpt
The short explanation is that to be able to recall the information, the memory needs to be accessed. This is done by putting a signal on certain wires and 'strobing' the chip. The strobe is the signal that tells the chip to put the data on the data signal wires.

The memory is arranged on a grid. Every time you add a wire to the grid, you increase the size of the grid by a power of two.