This is the base page of the section of programmer hardware needed.
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the keyboards on this page have the \ key in a reasonably good position. keytronic carries these keyboards.
I hope unicomp.com makes some buckling spring mechanical keyboards available that have the \ key in a better position for us commandline and programming folk.
for those maintaining older PC's, there is also a ps/2 F to 5-pin din M adapter cable listed. this allows you to plug in any keyboard you like into a 286, 386 or 486 box. cablestogo has this adapter.