version 1.1

Full Changelog: preset...base

in here i choose the matrix diagram for my circuit and it works with columns OUT and rows IN
every button in each column is connected to each other and also for the rows.
whenever a row input is 1 and a column output is 1, it detects that button with that row and column.

functions in my code:

• show
• read_key
• process_key
• format_result

i used a safe environment for evel() function, but later i decided to expand it to the whole math library
it functions well as a simple calculator