In reading the columns of a matrix, if no key is pressed we should get all in binary notation

Related MCQs

• Which of the following steps detects the key in a 4*4 keyboard matrix about the key that is being pressed?
• To identify that which key is being pressed, we need to:
• Key press detection and Key identification are:
• At null position, galvanometer reading will be                                
• Which of the following step/s is/are correct to perform reading operation from an LCD?
• How many rows and columns are present in a 16*2 alphanumeric LCD?
• Which command is used to select the 2 lines and 5*7 matrix of an LCD?
• The representation of 8-bit or 16-bit signed binary operands using 2’s complement is a data type of
• A register that is used to store binary information is called                        
• To detect that in which column, the key is placed?