Thanks. I think the architecture is very interesting how it violates expectations by having 11 bit words and 44 bit registers. The way the keyboard scan and dis

Thanks. I think the architecture is very interesting how it violates expectations by having 11 bit words and 44 bit registers. The way the keyboard scan and display scan is tied in with the register processing is also unusual. The masks that select which digits are used makes up for the small number of registers.