| 5  | 
LED | |
  | current flows through it.  | 
LPT1 or LPT2 | The name you can assign a parallel port to specify its address.  | 
  | See also parallel port.  | 
M  | 
  | 
(Megabyte) | 1,048,576 bytes. See also byte.  | 
math coprocessor | An IC that works with the microprocessor to speed up  | 
  | mathematical calculations.  | 
memory | The circuitry in your computer that stores data and programs.  | 
  | See also EMS, extended memory, RAM, and ROM.  | 
microprocessor | The integrated circuit that processes data and controls the basic  | 
  | functions of the computer.  | 
modem | A device used to exchange information with other computers  | 
  | over telephone or data lines.  | 
module | A circuit board that plugs into a dedicated connector on the  | 
  | system board in your computer.  | 
mouse | A small input device that you guide on a flat surface to control  | 
  | the cursor movement and operation of the computer when using  | 
  | certain software programs.  | 
N  | 
  | 
NVRAM | (Nonvolatile RAM) A type of RAM that retains its contents even  | 
  | after the computer is powered off. This memory stores EISA  | 
  | configuration information. See also RAM and SRAM.  | 
O  | 
  | 
operating system | A set of programs that provides the interface between other  | 
  | software programs and the computer.  | 
P  | 
  | 
parallel port | The connector on the back of your computer that allows the  | 
  | transfer of data between the computer and a parallel device,  | 
  | such as a parallel printer.  | 
partition | The process of dividing the storage space on a hard disk into  | 
  | separate areas so that the operating system treats them as  | 
  | separate disk drives.  |