Related Clues:

• The 'brains' of 58-Down
• Mainframe components
• Apple cores?: Abbr.
• PC 'brains'
• PC "brains"
• Computer brains, for short
• Program executors, for short
• PC cores
• Computer ''brains'': Abbr.
• Computer innards, for short
• Dell drivers: Abbr.
• Computer mainframes, abbr.
• Mainframe brains
• PC parts
• PC hearts