#define key_width 16
#define key_height 16
static unsigned char key_bits[] = {
   0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x00, 0x3c, 0x00, 0x66, 0x00, 0x66,
   0xfe, 0x67, 0xfe, 0x67, 0x1c, 0x66, 0x1c, 0x66, 0x14, 0x3c, 0x00, 0x18,
   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};