Apple II no video display
ethan.dicks at gmail.com
Fri Oct 27 15:26:03 CDT 2017
On Fri, Oct 27, 2017 at 4:13 PM, Brent Hilpert via cctalk
<cctalk at classiccmp.org> wrote:
> 74S is faster than 74LS, 74LS was combining low power techniques (which result in loss of speed) with Schottky technology to get some of the lost speed back, to get a better speed-power product than 'normal' TTL.
Right. My bad there.
> The chronological order of development was 74 --> 74H & L --> 74S --> 74LS
I do recall that progression. I've even seen a couple of 74L parts
(and there are more than a couple 74H parts in a 1968 PDP-8)
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