hi every one
i wanted to interface a 4/4 matrix keyboard with 89c51 i studied all theory from the related books i just tried to work out some sample program from those books,but my keyboard is not responding.
i found that there is a common 5vdc supply for the column & rows via resistors in each of col & row, where as in my keyboard there are only 8 terminals which gets connected with 4 col. & 4row
i feel better to get one of your suggestion for it. please guys help me.
rathinavel0904(_at_)gmail.com
i wanted to interface a 4/4 matrix keyboard with 89c51 i studied all theory from the related books i just tried to work out some sample program from those books,but my keyboard is not responding.
i found that there is a common 5vdc supply for the column & rows via resistors in each of col & row, where as in my keyboard there are only 8 terminals which gets connected with 4 col. & 4row
i feel better to get one of your suggestion for it. please guys help me.
rathinavel0904(_at_)gmail.com
