It's a combination of software and hardware Which are embedded by Kiel compiler to perform desired task.

alternate answer:
Embedded systems refer to devices, instruments or large engineering structures/systems that are built to handle one or a few pre-established tasks. The computer controlling the whole thing is built into or 'embedded' within the device.

 Hardware abstraction layer, Kernel, Subsystems, System Services.

In telecommunications terms, provisioning means to provide telecommunications services to a user. This includes providing all necessary hardware, software, and wiring or transmission devices.

Network technology based on the use of small, fixed-size packets, or cells. Because cells are fixed-length, they can be processed and switched in hardware at high speeds. Cell relayis the basis for many high-speed network protocols including ATM, IEEE 802.6, and SMDS.

Asynchronous Transfer Mode. International standard for cell relay in which multiple service types (such as voice, video, or data) are conveyed in fixed-length (53-byte) cells. Fixed-length cells allow cell processing to occur in hardware, thereby reducing transit delays. ATM is designed to take advantage of high-speed transmission media such as E3, SONET, and T3.

Mounting plate, used primarily in the Cisco AGS+, MGS, and CGS chassis, containing connector hardware allowing attachment to the network. Appliques translate communication signals from a network interface into the signals expected by the communication standard being used (such as EIA/TIA-232 or V.35).

Online Analytical Processing (OLAP) is by far the most complex and advanced SQL Server components. Companies are using OLAP more and more as they try to make sense of their tons of accumulated data. OLAP is used in the mysterious field called "data Analysis," The standard database table represents a flat matrix; SQL Server 2000 Analysis Services use the notion of cubes. The data and corresponding objects are multidimensional, having more dimensions than our four-dimensional space-time continuum; the number of dimensions is limited only by your imagination and hardware capabilities. You must install SQL Server Analytical Services. SQL Server 2000 Analysis Services presents the data from these fact and dimension tables as multidimensional cubes that can be analyzed for trends and other information that is important for making informed business decisions.

The system checks the SYSTEM.DAT file for the first part of the Registry file and processes it. SYSTEM.DAT is a hidden file that contains all the system's hardware configuration information, including the PnP and application settings. It is always located under the \Windows folder. Windows 9x searches the Hkey_Local_Machine key and the user's home directory for user profile information. Windows 9x creates a folder for each user who logs on to the system. This profile is held in the \Windows\Profiles subdirectory. Each profile contains a USER.DAT file (the second half of the Registry) that holds the Registry information for that user. It also contains a number of other files that customize the desktop just for that user. As with the SYSTEM.DAT file, the USER.DAT file is backed up as USER.DA0 each time the Windows 95 system is rebooted. Under Windows 98, the USER.DAT backup is part of the rb000x.cab files.

The minimum hardware requirements for installing Windows 2000 Professional on a PC compatible system are: Pentium 133 (P5 equivalent or better); 64MB RAM; 650MB or more of free space on a 2GB drive; and a VGA-compatible Monitor. For installation from a CD-ROM, a 12x drive is required. If the CD-ROM drive is not bootable, a high-density 3.5-inch floppy drive is also required.

If your system has hardware devices that are not on the Windows 2000 Hardware Compatibility List, you should contact the manufacturer of the device to determine whether they have new, updated Windows 2000 drivers for their device. Many peripheral makers have become very proactive in supplying updated drivers for their devices-often, posting their latest drivers and product compatibility information on their Internet Web sites, where they can be downloaded by customers. The second alternative is to try the device with Windows NT or Windows 9x drivers to see if it will work. The final option is to get a device that is listed on the Windows 2000 HCL.