RAM; random access memory: A computer component that allows you to store data.

ReadyBoost: A technology that allows your computer to augment its memory using a flash memory drive

ReadyDrive: ReadyDrive takes advantage of “hybrid” hard drives — the drives with significant amounts of integrated flash memory — to boot faster.

reboot: To restart your computer.

Recycle Bin: A folder on the hard drive where Windows places the files that you delete. Until you empty the Recycle Bin, deleted files can be restored.

red eye: This condition is visible in a photo when, instead of seeing a black pupil, the camera catches the blood-red retina in the back of the eye.

.reg file: A file that contains a backup of Windows Registry entries

Registry Editor: A Windows tool that allows you to manually modify the Windows Registry.

Remote Assistance: A Windows tool that you can use to allow a user on another computer to have access your computer so that they can help you correct errors.

Remote Desktop: Software within Windows that lets you access a PC from a remote location.

removable media: Storage media, such as a CD, DVD, or flash drive, that can be taken away from your PC.

repeat delay: When pressing a keyboard key, this is the pause before the key repeats itself on-screen.

repeat rate: When pressing a keyboard key, this is the speed at which the key’s character (or function) repeats.

Resource Monitor : A Windows 7 tool that tracks how all your system's components are being used, focusing primarily on the RAM and processor.

restore point: A snapshot of your hard drive’s important settings that can be used for a System Restore.

rip: To copy music from a CD to your PC. This is often accomplished using Windows Media Player.

root keys : Entries in the Windows Registry.

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