Questions

1. PS/2 keyboards use a two-wire interface consisting of:

   a) Keyup/keydown

   b) Clock/data

   c) Data in/data out

2. A scancode is generated whenever a key is:

   a) Pressed

   b) Released

   c) Held down

   d) All of the above

3. To display the scancodes on the VGA, we used:

   a) A hex to ASCII converter

   b) A shift register

   c) A BCD encoder

   d) (a) and (b)

4. To display audio data, how was the text state machine modified?

   a) It takes in 128 bits of graphical data and writes that to the correct address for that scanline using text_sm.

   b) The graphics are mapped to characters and we reuse the text_sm state variable.

   c) We created a new graphics state machine.

5. To trigger an audio update, we:

   a) Update on every sample captured

   b) Update every second

   c) Update on every vertical sync

   d) Update whenever nothing else is going on