7 Jan
2019
7 Jan
'19
10:20 a.m.
On 01/07/2019 09:51 AM, Peter Corlett via cctalk wrote:
On Sun, Jan 06, 2019 at 02:54:08PM -0700, ben via
cctalk wrote:
First I wasn't guessing back.? I was building and buying back then. So
that was what I
actually paid in 1972,? I've been at it since RTL hit the streets.?? The
74 series still
made though more likely 74F, AS, or LS variant and of course CMOS 74ACT
(and cmos friends) as I just bought a bunch.? Dip is getting harder to
get but
the various SMT packages are easy.? Prices for 10 or more of a part are
cheap to cheaper from primary suppliers.? The second tier suppliers are
often several times that.
I figure most of what I did back then is years before many here were born.
However I have enough NOS TTL 74LS, 74AS, 74F series to build several
machines.?
I'm still building, current project is a very compact Z80 CP/M system
using CF
for disk. Mine uses all Zilog CMOS for very low power.? Its a variant of
the
Grant Searle Z80 with memory management added to utilize all of the
124k ram and eeprom.? If you want go look there.
Allison
On 1/6/2019 12:24 PM, allison via cctalk wrote:
Thanks to inflation, $0.25 in 1972 is worth $1.51 now.
Likewise, $1.25 has
inflated to $7.54. So they're cheaper in real terms than they used to be.
However, it's still not entirely comparable, as I suspect nobody's making
74-series chips any more so you're buying NOS. A modern equivalent would be a
microcontroller, which start at well under a dollar.
The small beauty of being there...?? FYI back
then (1972) a 7400 was about
25 cents and 7483 adder was maybe $1.25.? Least that's what I paid.
Checks my
favorite supplier.
$1.25 for 7400 and $4.00 for a 7483.
It has gone up in price.