| "What is __" (section of heart.org) | 45 |
| "Rescue 911" action | 29 |
| 'ER' skill | 18 |
| PC core | 7 |
| Apple core? | 11 |
| PC's brain | 14 |
| PC part | 7 |
| PC's "brain" | 26 |
| PC brain | 8 |
| PC "brain" | 20 |
| Apple core, briefly | 19 |
| Smartphone component | 20 |
| Core of a PC | 12 |
| "Brain" of a PC | 25 |
| Smartphone component, for short | 31 |
| Intel product, for short | 24 |
| Brain of a PC | 13 |
| Smartphone's brain | 22 |
| PC's heart | 14 |
| PC's ''brain'' | 34 |
| PC innards: Abbr. | 17 |
| Main computer part (Abbr.) | 26 |
| Hi-tech heart | 13 |
| Heart of a PC | 13 |
| Computer's heart, for short | 31 |
| Computer's heart | 20 |
| Computer's core, briefly | 28 |
| Computer's "brain," for short | 43 |
| Computer core: abbr. | 20 |
| Tablet's system | 19 |
| Tablet part | 11 |
| Tablet component: Abbr. | 23 |
| Smartphone's 'brain' | 32 |
| Robot's "brains," for short | 41 |
| Primary PC element | 18 |
| PC's core | 13 |
| PC's brain, briefly | 23 |
| PC's 'brain' | 24 |
| PC heart | 8 |
| PC core: Abbr. | 14 |
| PC ''brain'' | 28 |
| Part of a computer, for short | 29 |
| Modern day tablet's core | 28 |
| Mainframe component | 19 |
| Mainframe brain, for short | 26 |
| Mainframe shortly | 18 |
| Main chip, for short | 20 |
| Key part of a PC | 16 |
| Intel product, briefly | 22 |
| Innards of a PC | 15 |
| Important chip, briefly | 23 |
| IBM "brain" | 21 |
| I.B.M. "brain" | 24 |
| High-tech heart, for short | 26 |
| Hi-tech brains? | 15 |
| Hi-tech "guts" | 24 |
| Heart of a computer, for short | 30 |
| Heart of a computer | 19 |
| Guts of a PC | 12 |
| Droid's brain, briefly | 26 |
| Digital "brain," briefly | 34 |
| Core PC controller | 18 |
| Core component of a PC | 22 |
| Computer's heart: Abbr. | 27 |
| Computer's "guts," for short | 42 |
| Computer part often metaphorized as a brain: Abbr. | 50 |
| Computer brain | 14 |
| Chip in a Dell, briefly | 23 |
| Brains of a PC | 14 |
| Apple chip, briefly | 19 |
| Apple "brain," for short | 34 |
| "Brain" of a computer, briefly | 40 |
| "Brain" of a computer | 31 |
| 'Brain' of a PC | 23 |
| PC "brains" | 21 |
| Mainframe brains | 16 |
| Computer brains, for short | 26 |
| Computer brains | 15 |
| Apple cores?: Abbr. | 19 |
| Xbox brains: Abbr. | 18 |
| Program executors, for short | 28 |
| PC parts | 8 |
| PC hearts | 9 |
| PC cores | 8 |
| Mainframe components | 20 |
| Mac brains | 10 |
| Laptop cores, for short | 23 |
| Gateway components | 18 |
| Dell drivers: Abbr. | 19 |
| Computers' guts | 19 |
| Computer mainframes, abbr. | 26 |
| Computer innards, for short | 27 |
| Computer brains: abbr. | 22 |
| Computer "brains": Abbr. | 34 |
| Apple cores? (abbr.) | 20 |
| Apple cores, for short | 22 |
| Grump | 5 |
| Sourpuss | 8 |
| Zodiac creature | 15 |
| Sidle | 5 |