16 Input Keys

The CHIP-8 has 16 input keys that match the first 16 hex values: 0 through F. Each key is either pressed or not pressed.

I used the input mapping recommended here.

Keypad       Keyboard
+-+-+-+-+    +-+-+-+-+
|1|2|3|C|    |1|2|3|4|
+-+-+-+-+    +-+-+-+-+
|4|5|6|D|    |Q|W|E|R|
+-+-+-+-+ => +-+-+-+-+
|7|8|9|E|    |A|S|D|F|
+-+-+-+-+    +-+-+-+-+
|A|0|B|F|    |Z|X|C|V|
+-+-+-+-+    +-+-+-+-+