[simpits-chat] Altimeter Question

[Roy Coates]

On Tue, 4 Nov 2003, John Miguez wrote:

> Hee hee, you younglings need an old fart to tell you about TTL.  Except, I am having a senior moment and can't remember what the first "T" means.  The other two letters are Transistor Logic.
>
> Transistors came out when I was a kid.  They are these tiny replacements for the vacuum tube that helped put a man on the moon.  :)
>


A vacuum tube put a man on a moon?  why did they use a vacuum? must be the
dust.

A thermionic valve might have been useful... better yet, a TTL
(transistor-transistor-logic) device.

Roy.