Apple II no video display

Ethan Dicks ethan.dicks at
Fri Oct 27 15:26:03 CDT 2017

On Fri, Oct 27, 2017 at 4:13 PM, Brent Hilpert via cctalk
<cctalk at> 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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