rambus RAM {Ans: Characterized by a 184 pin RIMM, this type of RAM is long obsolete. It also has 2 notches to prevent insertion into the wrong MoBo. This type of RAM must always be installed in pairs.}Keyboard {Ans: This is a peripheral of the system unit, used for input from the user. It has many keys available to input in the form of alphabets, numerals, and symbols.}Windows Memory Diagnostic {Ans: This program comes with every windows 7 and later system. It is located under Administration Tools and helps to diagnose any issues related to memory.}OEM {Ans: Abbreviate: Original Equipment Manufacturer}DDR3 {Ans: This type of RAM uses a 240 pin DIMM. Like it's counterpart, it also uses a single slot, but it is also located in a different location to prevent insertion into the wrong slots. To calculate the speed, you calculate the MoBo speed x4. Then you will double that speed to get the actual speed of this RAM. This PC rating will have a PC3 number.}Solid State Drive {Ans: This uses semiconductors to store data as electronic means. It uses no moving parts, and can be generally quicker than the platter variants.