A complex system that works is invariably found to have evolved from a simple system that worked.A complex system designed from scratch never works and cannot be patched up to make it work.
Per the link, you need to study the documentation to work that out.
You titled this thread, "8080-MCU" - did you really mean that? Looks like you're talking about an LCD - not an MCU?
A complex system that works is invariably found to have evolved from a simple system that worked.A complex system designed from scratch never works and cannot be patched up to make it work.