Q.

When a key is pressed, what does the ring counter in the HDL keypad application do?

A. count to find the row
B. freeze
C. count to find the column
D. start the d flip-flop
Answer» A. count to find the row
Explanation: the data signal arrange the information with the help of data flow in row and column manner. it encodes the data to be sent. when a key is pressed the ring counter in the hdl scans the information provided by the user and counts to find the row.
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