[somat]

The ariicle was a lot of fun however I felt it missed a important aspect about the respective computers. IO channels. I don't know about the USB charge controllers. But the AGC as a flight computer had a bunch of inputs and outputs. Does a Richtek RT7205 have enough IO?

[jiggawatts]

The most powerful chip in the list (Cypress CYPD4126) has 30x general purpose I/O pins.[1]

AFAIK, this is typical of USB controller chips, which generally have about 20-30 I/O pins, but I’m sure there are outliers.

The AGC seems to have four 16-bit input registers, and five 16-bit output registers[2], for a total of 144 I/O pins total.

[1] https://ta.infinity-component.com/datasheet/9c-CYPD4126-40LQ...

[2] https://en.wikipedia.org/wiki/Apollo_Guidance_Computer#Other...

[theon144]

I have no clue as to the I/O requirements of the AGC, but I imagine that with ~500x the performance, a simple I/O expander could fill the gap?