Tablet PCs are type of notebook computers that have an LCD screen on which the user can write using a special-purpose pen, or stylus. The handwriting is digitized and can be converted to standard text through handwriting recognition, or it can remain as handwritten text. Tablet PCs also typically have a keyboard and/or a mouse for input. The tablet PC relies on digital ink technology, where a digitizer is laid under or over an LCD screen to create an electromagnetic field that can capture the movement of the special-purpose pen and record the movement on the LCD screen. The effect is like writing on paper with liquid ink.
Pocket PCs are advanced PDAs. In general, they have low-power processors (available up to 400Mhz), brilliant transflective color screens, wireless communication features, nearly endless add-on options, and the powerful pocket PC operating system from Microsoft. All pocket PCs have one or more expansion slots for added memory and other.
Short for personal digital assistant (PDA), a handheld device that combines computing, telephone/fax, Internet and networking features. A typical PDA can function as a cellular phone, fax sender, Web browser and personal organizer. PDAs also can incorporate handwriting recognition features. Some PDAs can also react to voice input by using voice recognition technologies. PDAs are available in either a stylus or keyboard version.
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EPOC is an operating system from Psion PLC, designed specifically for mobile, ROM -based computing devices. EPOC16 is a 16-bit version and EPOC32 is the 32-bit that supports preemptive multitasking. EPOC is competing with Windows® CE in the grow PDA market.
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This processor is a more powerful processor than it earlier version, the Intel Pentium III Xeon processor. It is designed specifically for multi-threaded applications and multi-tasking environments.
Version of the Pentium 4 processor, designed to run office and home entertainment software faster. Prescott contains more than twice as many transistors in a smaller area than the previous chip.
Processors designed to optimize low power consumption and high performance processing for a wide range of wireless and networking applications and rich services. This technology includes the Intel PCA and the Intel PXA family of processors
The Intel® Itanium® 2 processor is uniquely architected for demanding enterprise and technical applications. This is the second generation of Intel Itanium Processors, designed fro dual processor (DP) and Multiprocessor (MP) servers and workstations.
A microprocessor developed by Samsung Electronics Co. Ltd. that is used in mobile and handheld systems. It has embedded support for PacketVideo Technology®.
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CPU speed refers to the speed at which the CPU operates internally. It is calculated by multiplying the memory bus speed by the multiplier of the processor, or processor speed = memory speed x multiplier. The multiplier is different for each processor. For instance, for a Pentium II 350 the multiplier is 3.5, and for a Pentium II 450 the multiplier is 4.5.
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Flat panel displays are very thin displays, commonly used for portable computers. Technologies used for flat panel displays include, but are not limited to, liquid crystal display (LCD) and gas plasma.
Liquid Crystal Display The most common type of flat panel displays use LCD technologies. In LCD displays, an electric current passes through a liquid crystal solution that is trapped between two sheets of polarizing material. The crystals align themselves so that light cannot pass through, producing an image on the screen. LCD displays can be monochrome or color. Color displays can be passive matrix or active matrix.
Passive matrix displays use a grid of horizontal and vertical wires with an LCD element at each intersection. Examples of passive matrix technology are dual scan super-twisted nematic (DSTN), color super-twisted nematic (CSTN), high-performance addressing (HPA), fast response super-twisted nematic (FRSTN), and plasma addressed liquid crystal (PALC) displays.
In active matrix displays, each pixel has a transistor that is directly switched on or off, improving response times. The most common type of active matrix display is thin film transistor (TFT).
Gas Plasma These active matrix displays consist of an array of pixels each consisting of three subpixels (red, blue, and green). Gas in the plasma state reacts with the subpixels to display the appropriate color. Plasma displays are backlit and produce bright, crisp images.
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Computer has a membrane keypad interface. Membrane keypads are comprised of momentary switches covered with a thin pliable layer. They have a very thin profile.
A stylus is a digital pen that looks like a simple ballpoint pen but uses an electronic head instead of ink and works in conjunction with a graphics tablet. The tablet contains electronics that enable it to detect movement of the cursor or pen and translate the movements into digital signals that it sends to the computer.
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I/O Ports
Ports let you connect external devices like printers, scanners, and cameras.
The computer has a mouse port for using an external mouse. A mouse is a device that controls the movement of the cursor or pointer on a display screen. A mouse is a small object you can roll along a hard, flat surface. Its name is derived from its shape, which looks a bit like a mouse, its connecting wire that one can imagine to be the mouse's tail, and the fact that one must make it scurry along a surface. As you move the mouse, the pointer on the display screen moves in the same direction. Mice contain at least one button and sometimes as many as three, which have different functions depending on what program is running. Some mice also include a scroll wheel for scrolling through long documents.
Computer has a keyboard port for using an external keyboard. Many computers that have integral membrane keypads also have ports for using a full-size, tactile keyboard.
Modulator-demodulator (modem) is a device or program that enables a computer to transmit data over telephone lines. Computer information is stored digitally, whereas information transmitted over telephone lines is transmitted in the form of analog waves. A modem converts between these two forms.
Universal serial bus (USB) is the standard serial bus for low-to-medium speed peripheral device connections to personal computers, including keyboards, mice, modems, printers, joysticks, audio functions, monitor controls, etc.
Also known as Sony i.LINK or FireWire®, IEEE-1394 is an external bus standard. Like USB, it is hot pluggable and can provide power. It uses a 4 or 6-pin connector. It runs at 400 Mbit/sec and 800 Mbit/sec. FireWire is a registered trademark of Apple Computers, Inc.
A local area network (LAN) protocol developed by the Xerox Corporation in cooperation with DEC and Intel in 1976. Ethernet uses a bus or star topology and supports data transfer rates of 10 Mbps. The Ethernet specification served as the basis for the IEEE 802.3 standard, which specifies the physical and lower software layers. Ethernet uses the CSMA / CD access method to handle simultaneous demands. It is one of the most widely implemented LAN standards.
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A type of slot (specially designed for the mobile and handheld devices) used to accommodate SD/MMC cards that are used for storage. Secure digital cards (SD cards) are small flash memory cards designed for the storage of data on digital cameras, MP Players, PDAs, etc. SD cards are about the size of a postage stamp. The Secure digital slot can read from and written to both SD cards and multimedia cards (MMC).
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Multimedia cards are approximately the size of a postage stamp, and are used mainly to store digital music (MP3s), digital photos and all other digital data.
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Slot for secure digital input/output (SDIO) cards that are used mainly in handheld devices. SDIO cards can be used for storage or to add memory. Secure digital slots with SDIO support allow for the use of SD peripherals such as digital cameras and 802.11b wireless transmitters as well as flash memory products.
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CompactFlashTM are mass storage devices first introduced in 1994 that provide complete PCMCIA functionality and compatibility. CompactFlash devices are solid-state products (they contain no moving parts) that provide greater protection for data integrity than the conventional magnetic disk drives.
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The device has integrated Bluetooth technology. Bluetooth is a short-range radio technology aimed at simplifying communications among Internet devices and between devices and the Internet. It also aims to simplify data synchronization between Internet devices and other computers. Products with Bluetooth technology must be qualified and pass interoperability testing by the Bluetooth special interest group prior to release. Bluetooth's founding members include Ericsson, IBM, Intel, Nokia and Toshiba.
The computer has wireless fidelity (Wi-Fi) standards capabilities and is meant to be used generically when referring of any type of 802.11 network, whether 802.11b, 802.11a, dual-band, etc. The term is promulgated by the Wi-Fi Alliance. Any products tested and approved as "Wi-Fi Certified" (a registered trademark) by the Wi-Fi Alliance are certified as interoperable with each other, even if they are from different manufacturers. A user with a "Wi-Fi Certified" product can use any brand of access point with any other brand of client hardware that also is certified. Typically, however, any Wi-Fi product using the same radio frequency (for example, 2.4GHz for 802.11b or 11g, 5GHz for 802.11a) will work with any other, even if not "Wi-Fi Certified."
The computer can play MP3 music files. MP3 is the file extension for MPEG, audio layer 3. Layer 3 is one of three coding schemes (layer 1, layer 2 and layer 3) for the compression of audio signals. Layer 3 uses perceptual audio coding and psychoacoustic compression to remove all superfluous information (more specifically, the redundant and irrelevant parts of a sound signal. What the human ear doesn't hear anyway). It also adds a modified discrete cosine transform (MDCT) that implements a filter bank, increasing the frequency resolution 18 times higher than that of layer 2. The result in real terms is layer 3 shrinks the original sound data from a CD - with a bit rate of 1411.2 kilobits per one second of stereo music - by a factor of 12 (down to 112-128kbps) without sacrificing sound quality. Bit rate denotes the average number of bits that one second of audio data will consume.
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2 Duo
Core
micro-architecture. A powerful processor that is available at speeds over 2 GHz.