When did double-shot keytops disappear?

[jpero at sympatico.ca]

> Zane H. Healy wrote:
> > One of these days I'd like to find a really high quality USB keyboard.
> > While I do like keys tops that stay intact, I'm more concerned with
> > with the keyboard not twisting easily, and keys that feel good when
> > you push on them.
 
> I'm liking the Matias TactilePro keyboard well enough (on an iMac G5).
> But then I am also a Northgate OmniKey user (on PCs).  The keys feel
> and sound about right to me.
> 
> Key cap logs are printed on top, not double-shot.
> 
> -Frank McConnell

Northgate Omnis, few old generics and all old Zenith keyboards 
(1980's to early 1990 era) used same switch assembies.  Save them 
for replacement switches, unsolder two pins and pop them out of metal 
frame.

IBM M keyboards are great.  I still use and keep few for parts and 
back ups.

By the way, I tried a generic ("Smart Adapter"; Ez-PU21) active PS/2 
(keyboard & mouse) to USB adapter, works ok but not 90% perfect.  
Fails on BIOS, certain OSes.  Which active PS/2-USB adapters that 
does WORK well?

Cheers, Wizard