In reading the columns of a matrix, if no key is pressed we should get all in binary notation
A. 0
B. 1
C. F
D. 7
Answer:A
In reading the columns of a matrix, if no key is pressed we should get all in binary notation
A. 0 B. 1 C. F D. 7
Explanation: If no key is pressed, then all the keys show 1 as they are all connected to power supply.