But before even those transistor-based computers is a retrocomputing era rarely touched on: the era of programmable vacuum tube machines. [Mike] has gone back to the 1950s with this computer which ...

Good housekeeping recommends using two door mats, one inside and one outside vacuum. The indoor mats and hose off and dry the outside ones, many ovens have *** self cleaning feature. But if yours ...

Here are just *** few, if you want to stop tracking dirt inside the house. Good housekeeping recommends using two door mats, one inside and one outside vacuum. The indoor mats and hose off and dry the ...

[Nick Poole] does a lot of custom work with vacuum tubes — so much so that he builds his own vacuum tubes of various shapes, sizes, and functions right on his own workbench. While the theory of ...