Sinclair ZX81
... that users of the Sinclair ZX81 , a British home computer of the early 1980s, balanced cartons of cold milk on top of the case to stop it from overheating?
... that users of the <b id="mwE_Q"><a href="./ZX81" id="mwE_U" rel="mw:WikiLink" title="ZX81">Sinclair ZX81</a></b> <i id="mwE_Y">(pictured)</i>, a <a href="./United_Kingdom" id="mwE_c" rel="mw:WikiLink" title="United Kingdom">British</a> <a href="./Home_computer" id="mwE_g" rel="mw:WikiLink" title="Home computer">home computer</a> of the early 1980s, balanced cartons of cold <a href="./Milk" id="mwE_k" rel="mw:WikiLink" title="Milk">milk</a> on top of the case to stop it from overheating?