WHEN
Data = "0000"
GS = '0'
GS = '1'
Columns = "0111" ?
key 1
key 2
key 3
Columns = "1011" ?
Columns = "1101" ?
Column decoded
Columns = "0110" ?
key A
(other situations like clicking two keys in the same row)
key F
key E
key O
by Boop