21. You start with a central processing unit ( CPU ), a monitor and a keyboard. 22. One common measure of computer function is the way the central processing unit handles information. 23. Taiwan is Intel's largest Asian customer for Central Processing Units , the brain of the computer. 24. A microprocessor is the complex chip that is the central processing unit of the computer. 25. Both use PowerPC 603e central processing units , running at 200 megahertz, and IDE hard drives. 26. The sets use NEC-made central processing units , which make up the main brain of the computer. 27. The primary focus of this initiative was the Opteron workstation-class central processing units ( CPUs ). 28. A microprocessor incorporates the functions of a computer's central processing unit on a single integrated circuit. 29. Unlike a backplane, it also contains the central processing unit and hosts other subsystems and devices. 30. CPU _ It stands for central processing unit , the chip that acts as the computer's brain.