A view of Mentor�s insides. Quite a squash I�ll tell you! The third ROM socket is for expansion that never occurred. The other 2x 2764�s (8K each) are almost full, showing the shere size of the programming code! The battery for the RTC is in the bottom RH corner, with the A-D and the D-A chips on the board on the top side. There is a total of 40K RAM on the board. 8K of which is in a �Smart� non-volatile socket.

To the right we see the �Character Game�. An exercise to show how it is possible to program those horrible LCD displays. The �arrows� above the second from last digit on the RH side of the bottom row point to the pixel to be added / deleted. Draw tiny pictures or try out how various custom characters will look. The character is stored in the non-volatile part of the RAM for future use.