0x15 :-D or differently: 10101 :lol: which means 21 :-P
as to computers:
Alphatronic PC
C-64
Amiga 500, 1MB
Amiga 600, 1MB
Amiga CDTV (x2)
Amiga 1200 / PPC603ev/225 040/33 ...
PowerMac 8100 (ppc601/80)
PowerMac 7200 (ppc601/90)
PowerMac 8500 (ppc604/150)
PowerMac 9500 (ppc604e/180)
UMAX Pulsar S900 (ppc G3/433)
PowerMac Beige G3 (ppc G3/333)
AMD K6-2/300 PC
AMD Duron 1600 PC
AMD Barton 2800 (2167MHz) PC
...
:-)