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battery life Battery life depends on several factors, including processor power, screen usage, PC cards, whether or not you use an AC adapter for power. bit depth A digital image is represented as a grid of dots called bits. The number of bits used to represent colors or tones. Generally the greater bit depth the better the detail. black copy speed The speed at which the copier produces black text. Copy speed is measured in copies per minute (cpm). black resolution The degree of clarity with which a printer prints black text, measured in dots per inch (dpi). black speed The speed at which a printer prints black text. Print speed is measured in pages per minute (ppm). brightness Most mobile projectors put out between 700 and 1500 ANSI lumens, the industry-standard measure of light output. A 700-lumen projector is for a small room with the lights down. A 1200- to 1500-lumen model is better for large lit rooms. built-in functions Certain calculations can be done automatically: formulas, steps, or conversions used to simplify the steps needed in solving a problem. card slots Depending on what your handheld functions are, a card slot enables connectivity, data storage, fax and e-mail sending, and Web surfing by providing a port for devices. color copy speed The speed at which a copier reproduces color text. Copy speed is measured in copies per minute (cpm). color resolution The resolution at which a printer prints colored text, measured in dots per inch (dpi). Generally the higher dpi the better the image will look. color speed The speed at which colored text or images are printed, measured in pages per minute (ppm). communications How your PC keeps in touch. This includes: e-mail, the Internet, your network. This is done via modem, Ethernet or wireless connections. compatibility What type of computer (either Mac or PC) and operating systems the device be used with. computer compatibility What type of video protocol the digital projector requires. Usually these include XGA, SVGA, VGA, SXGA and Mac protocols. Make sure your laptop or PC uses a video type that works with the digital projector. connectivity How the peripheral plugs into to the PC. There are many types: parallel, IDE (Intelligent Device Electronics), SCSI (Small Computer System Interface), USB (Universal Serial Bus) and wireless. Be sure to make sure the peripheral and your PC are compatible. contrast ratio The relationship between the light and dark areas of an image. An image with low contrast tends to look dull and flat. copier speed The speed at which text or images are copied, measured in copies per minute (cpm). digital camera memory Camera memory can either mean internal flash memory, which is built into your camera, or removable card memory. Removable CompactFlash card memory can be used to greatly expand the memory capabilities of your camera. It can also be inserted into certain printers to transfer photos without starting up your PC! digital camera resolution The amount of detail that the camera can capture, measured in pixels. In general, the more pixels your camera has, the more detail it can capture. The more detail you have, the more you can enlarge a picture before it becomes "grainy," or starts to look out-of-focus. digital zoom Digital zoom selects pixels from the center of a photo and enlarges the image further. Use digital zoom once you've reached ultimate optical zoom to increase the size of your subject even further. dimensions A product's overall size, calculated by its width, depth and height (WxDxH). display A monitor-a device that displays text and graphics. Desktop monitors are usually cathode-ray tubes (CRT) or flat panels, and laptop monitors, handhelds, and calculators are usually liquid crystal display (LCD). display size The dimensions of a calculator's window-generally measured in lines and characters. Generally the more lines and characters the larger calculations possible. dot pitch A measure of a display's sharpness. Dot pitch is measured in millimeters (mm), and a smaller number means a sharper image. dvd-writer compatibility The type of recording disc (media) that the writer is able to utilize: DVD+RW, DVD+R, CD-RW, or CD-R. enhanced resolution Sometimes a better-looking image can be created using a combination of scanning and software enhancement. Through an interpolation process, the software adds extra pixels between the ones actually scanned. entry system logic The order in which data is entered into a calculator. Types of entry system logic include Algebraic, RPN, HP Basic or Assembly. fax resolution The degree of clarity with which a fax prints text, measured in dots per inch (dpi). hard drive A memory disk fixed permanently within a computer's drive unit, used for storing data. Much more data can be stored on hard disk than on a removable disk, and the data can be accessed more quickly. hardware resolution Represents the maximum image quality that the scanner hardware can achieve using its lens and light source before any software enhancement. Usually represented in dots per inch (dpi). infrared Information is carried from PC to printer via invisible lightwaves (similar to what your TV remote uses). Use infrared to beam a document to your printer. Unlike wireless, infrared is a "line of sight" technology, and interference is uncommon. input mechanism How data is entered into a device. Examples are included keyboard, add-on keyboard, touch display, stylus, or microphone (for voice memos). maximum document size The largest paper size that your scanner can accommodate. This depends on the physical size of the scanner glass listed in inches: 4" x 6", 8.5" x 11.7" and 8.5" x 14" are common sizes. maximum resolution The number of individual dots of color, known as pixels, contained on a display. Identified by the number of pixels on the horizontal and vertical axis, such as 640x480. Viewable area, refresh rate and dot pitch all directly affect the maximum resolution. memory Memory usually means RAM (random access memory), which is measured in megabytes. RAM is the short-term memory for your handheld, laptop or desktop PC. More RAM generally makes applications run faster. memory registers Memory Registers are used to contain alpha or numeric data. These are programmable places to keep valuable data or carry over calculations already made. monthly duty cycle How many copies (in pages) per month the machine is generally rated for. This will help you decide whether the copier is best for home use, small office, medium officer or large office use. multimedia drive CD-ROM, CD-Writer, DVD or DVD-Writer. A CD-ROM can read information stored on a CD, while a CD-Writer (or CD-RW) can also create or copy information into the CD format. A singled-sided, single-layer DVD (digital video disc) holds about 7 times the information of a CD. A DVD can read information stored on a DVD, while a DVD-writer can also create or copy this information onto a DVD disc. networking Networks are collections of connected computers and peripherals, such as printers, that can 'talk' to each other. Network your printer or all-in-one so that more than one person or PC can use the peripheral. operating system The most important program that runs the PC. Every computer must have an operating system to run other programs. HP generally uses Microsoft operating system-the newest being Windows XP. optical resolution The built-in resolution of a scanning device involving the use of a lens and a light source. This is opposed to enhanced resolution, which involves the use of software. Both resolutions are given as dots per inch (dpi). optical zoom Optical zoom uses the lens to focus in on a distant object. Use it to bring closer the image subject. Generally expressed as how many times (i.e. 4x, 2x) the object is made larger. plug and play compatible Most newer PCs have the ability to recognize and then install the necessary software for a new device (i.e. a new monitor), thus making installing as easy as plugging it in. pre-programmed modes Whether or not factory set modes, measured by display resolution and refresh rate, are installed on your monitor. preview scan speed How quickly you will see on your screen a preview of the scan you are making, measured in seconds. print resolution The number of dots per square inch (dpi) used to produce an image in printing or on a computer display. The higher the resolution, the better the image quality. print speed How quickly in pages per minute (ppm) black and white or color printouts are printed. The higher the number the less you have to wait for large projects. print technology The process of layering ink drops, which together create a total image. HP's generations of color-layering technology, Photoret, provide a wide range of smoother, more realistic colors for true-to-life images. printer memory Your printer needs memory to store documents sent to it, before and as it is printing. More memory will allow faster printing for both individual and networked users. processor The control unit and brains of the computer, where most calculations take place. Clock speed is measured in megahertz or gigahertz. The higher the value, the more powerful the computer. projector resolution The amount of detail the digital projector can show. This is measured in pixels and influenced by the type of video format you are using. In general, the more pixels your projector can put up on a screen, the better the image looks. read speed A DVD player has the job of finding and reading stored bits of information on a DVD disc. How quickly this is done is usually represented in increments of 1x, 2x, etc. 1x would be a read speed equal to the rate that the material was recorded (60 minutes for example, if 60 minutes of music was recorded). 2x would be twice as fast, 3x three times as fast, etc. Faster sampling rates also mean better error correction. rewrite speed How quickly a DVD writer can write over a DVD disc. How quickly this is done is usually represented in increments of 1x, 2x, etc. 1x would be a rewrite speed equal to the rate that the material was recorded (60 minutes for example, if 60 minutes of music was recorded). 2x would be twice as fast, 3x three times as fast, etc. Faster sampling rates means your disc takes less time to rewrite. scanner resolution The number of dots per square inch (dpi) used to produce an image on a computer display or to be printed. The higher the resolution, the better the image quality. sound card An expansion card on PCs that allows the playback and recording of sound, such as from a WAV or MIDI file or from a music CD-ROM. Nearly all PCs sold today have sound cards. transmission speed The sending of a fax, measured in seconds per page. If your fax has a lot of graphics, a high resolution setting, or is being sent in color, it will take longer to send than a simple text fax. video capability Video is often formatted different ways including NTSC/PAL/SECAM formats. Check to see if your digital projector needs to read these formats. video card A video card helps your PC create video images on a monitor. Video cards help quickly render video games and DVD videos in lifelike color and 3D. viewable area Monitors are often measured diagonally from edge to edge of the outer box in inches. The viewable area is the area on the monitor where you can actually see the images. Thus, a 15" monitor may only have a 13" viewable area. write speed How quickly a DVD writer can write to a DVD disc. How quickly this is done is usually represented in increments of 1x, 2x, etc. 1x would be a write speed equal to the rate that the material was recorded (60 minutes for example, if 60 minutes of music was recorded). 2x would be twice as fast, 3x three times as fast, etc. Faster sampling rates means less time spent waiting. |