Dell OptiPlex GX260 Series System User's Manual page 215

ISP — Internet service provider — A company that allows you to access its host server to connect directly to the Internet.
The ISP gives you a software package, user name, and access phone numbers for a monthly fee. If your computer has a
modem, you can connect to the Internet, access websites, and send and receive e-mail.
K
Kb — kilobit — A unit of data that equals 1024 bytes. A measurement of the capacity of memory integrated circuits.
KB — kilobyte — A unit of data that equals 1024 bytes but is often referred to as 1,000 bytes.
kg — kilogram — A unit measuring mass that equals 1,000 grams.
kHz — kilohertz — A measurement of frequency that equals 1,000 Hz.
L
LAN — local area network — A computer network covering a small area. A LAN usually is confined to a building or a few
nearby buildings. A LAN can be connected to another LAN over any distance via telephone lines and radio waves to form a
wide area network (WAN).
LED —
light-emitting diode — An electronic component that emits light to indicate the status of the computer.
Local bus — A data bus that provides a fast throughput for devices to the microprocessor.
LPT —
Line print terminal — The designation for a parallel connection to a printer or other parallel device. Most computers
support one or two parallel connectors: LPT1 and LPT2.
M
Mb — megabit — A measurement of memory chip capacity that equals 1024 KB.
Mbps — megabits per second — One million bits per second. This measurement is typically used for transmission speeds for
networks and modems.
MB — megabyte — A measurement of data storage that equals 1,048,576 bytes. 1 MB equals 1024 KB. When used to refer to
hard drive storage, the term is often rounded to mean 1,000,000 bytes.
MB/sec — megabytes per second — One million bytes per second. This measurement is typically used for data transfer
ratings.
Memory — A temporary data storage area inside your computer. Because the data in memory is not permanent, Dell
recommends that you frequently save your files while you are working on them, and always save your files before you shut
down the computer. Your computer can contain several different forms of memory, such as RAM, ROM, and video memory.
Frequently, the word memory is used as a synonym for RAM.
Memory address — A specific location where data is temporarily stored in RAM.
Memory mapping — The process by which the computer assigns memory addresses to physical locations at start-up.
Devices and software can then identify information that the microprocessor can access.
MHz —
megahertz — A measure of frequency that equals 1 million cycles per second. The speeds for computer
microprocessors, buses, and interfaces are typically measured in MHz.
Microprocessor — A computer chip that interprets and executes program instructions. Sometimes the microprocessor is
referred to as the processor or the CPU (central processing unit).
mm —
millimeter — A unit of length that equals one thousandth of a meter or 1/25 inch.
Modem — A device that allows your computer to communicate with other computers over analog telephone lines. Three
types of modems include: external, PC Card, and internal. You typically use your modem to connect to the Internet and
exchange e-mail.
Monitor —
The high-resolution TV-like device that displays your computer's output.