Historical clue formulations

• Apple cores, for short? — 2024-12-22
• "Brains" of tech — 2024-05-26
• Apple cores, for short — 2019-11-27
• Hearts of PCs, for short — 2016-10-17
• PC brains — 2015-08-31
• PC hearts — 2011-09-20
• Computer innards, for short — 2010-03-25
• PC cores — 2009-06-21
• Apple cores?: Abbr. — 2008-10-05
• Program executors, for short — 2008-04-27
• PC "brains" — 2005-04-19
• Apple cores?: Abbr. — 2003-06-15
• The "brains" of 58-Down — 1998-06-09