17 Apr
2007
17 Apr
'07
11:22 p.m.
On 17 Apr 2007 at 19:53, Tony Duell wrote:
Motorola marketed the MC4041 as something very much like this; it was
a pre-programmed version of an XC170 ROM. Of course, they were also
suggesting that the same ROM be used as a BCD-to-7 segment decoder
(MC4039) and a 3-bit-to-8 demux (MC4038). Note that I said "early"
:)
Cheers,
Chuck
I think that
the early databooks also show how to make a parity
generator from a bipolar ROM.
You can make any combinatorial logic circuit from a ROM. Using one for a
parity tree seems ridiculously over-complex, though.