A(n) -driven sequencer operates in a manner similar to a mechanical drum switch that increments automatically after a preset time period. A(n) -driven sequencer advances to the next step by an...

A(n) ____-driven sequencer operates in a manner similar to a mechanical drum switch that increments automatically after a preset time period.

A(n) ____-driven sequencer advances to the next step by an external pulsed input.

The hexadecimal equivalent of the binary number 0011 1111 is ____.