3. In a full-featured counter in HDL, the concept of rolling over simply means the count sequence has reached its limit and must start over at the beginning of the sequence.
4. The serial in/parallel out shift register transfers data from one parallel data bus to another parallel data bus one bit at a time across a single line.
8. When implementing a complete system application using IC counter chips, output devices such as LED indicators must be configured to operate from the counter outputs.