I have got the basic setup working now i am using a i2c screen and a modular design. At the moment I'm using just a cardboard box for a case while i am working on my code. The code is coming along well as I have a splash screen X,/,+,- functions working and the RED button, enters I Ching mode. Floating point (decimal point numbers) currently only work for answers to division questions, and any answer above 4 always displays "A Suffusion of yellow". Entering I-Ching mode displays the first hexagram (which I have created custom characters for), and then the word "judgement" followed by a random number from 1 to 64. The correct I Ching judgements will be added later, as well as additional mathematical functions based on Douglas Adams description.