The MB85R1001A is an FRAM (Ferroelectric Random Access Memory) chip consisting of 131,072 words x 8 bits of nonvolatile memory cells fabricated using ferroelectric process and silicon gate CMOS ...
Homebrew 8-bit computers tend to have fairly limited displays, often one or more seven-segment displays and an array of LEDs to show the values of RAM or perhaps some other states of the computer.