Hi,
as more people wished, here is the true h/w random number generator:

 White noise generator, design by dr. Imre Bartfai, 8/30/1999

 +--------------------------------------------------------------------- Vdd
 |                           220k                    220k               5V
 |                       +---\/\/\---+           +---\/\/\---+------+
 |                       |           |           |           |      |
 | Ge                    |    |\     |           |    +------+      \
 | EFT317 PNP      +-----+----|- \   |           |    |             / 220k
 |      C          |     |    |    >-+----| |----+    |     |\      \
 |   |/            \  +-------|+ /        47n    |    +-----|- \    |
 +--B|        220k /  |  |    |/                 |    |     |    >--+
     |\            \  |  |  1/2 LM358            +----------|+ /    |
       |E          |  |  |                       |    |     |/      \
       +----| |----+--+  +                       +    +             /  47k
       |    47n    |     |                       |    | 1/2 LM358   \
       \           \     \                       \    \             |
  4k7  /        1M /     / 2k2                1M /    / 2k2         + out
       \           \     \                       \    \
       |           |     |                       |    |
       +-----------+-----+-----------------------+----+---------------- Vss

 Standard TTL can not be driven, but CMOS (and maybe LS) are o.k.
 The power supply must be filtered thoroughly due to the high gain!

Regards,
Imre