168 Glossarycannot operate both devices simultaneously.ISP — Internet service provider — A company that allows you to access its host serverto connect directly to the Internet, send and receive e-mail, and access websites. TheISP typically provides you with a software package, user name, and access phonenumbers for a fee.KKb — kilobit — A unit of data that equals 1024 bits. A measurement of the capacity ofmemory integrated circuits.KB — kilobyte — A unit of data that equals 1024 bytes but is often referred to as 1000bytes.key combination — A command requiring you to press multiple keys at the sametime.kHz — kilohertz — A measurement of frequency that equals 1000 Hz.LLAN — local area network — A computer network covering a small area. A LANusually is confined to a building or a few nearby buildings. A LAN can be connected toanother LAN over any distance through telephone lines and radio waves to form awide area network (WAN).LCD — liquid crystal display — The technology used by portable computer and flat-panel displays.LED — light-emitting diode — An electronic component that emits light to indicatethe status of the computer.local bus — A data bus that provides a fast throughput for devices to the processor.LPT — line print terminal — The designation for a parallel connection to a printer orother parallel device.MMb — megabit — A measurement of memory chip capacity that equals 1024 Kb.Mbps — megabits per second — One million bits per second. This measurement istypically used for transmission speeds for networks and modems.MB — megabyte — A measurement of data storage that equals 1,048,576 bytes. 1 MBequals 1024 KB. When used to refer to hard drive storage, the term is often rounded to1,000,000 bytes.