1. Differentiate between storage devices and storage media.
2. Identify the uses of tape, magnetic stripe cards, smart cards, microfilm and microfiche, and enterprise storage.
3. Describe the various types of flash memory storage: solid state drives, memory cards, USB flash drives, and Express Card modules.
4. Differentiate among various types of optical discs: CDs, archive discs and Picture CDs, DVDs, and Blu-ray Discs.
5. Summarize the characteristics of ink-jet printers, photo printers, laser printers, multifunction peripherals, thermal printers, mobile printers, label and postage printers, and plotters and large-format printers
ANSWERS:
2. Tape is a magnetically coated ribbon of plastic capable of storing large amount of data of information at a low cost. It is no longer used as a primary method of storage. Instead business users utilized tape most often for long term storage and backup. Magnetic Stripe cards is a credit card, entertainment card, bank card or other similar card with stripe that contains information identifying you and the card. Information stored in the stripe includes your name, account number and card expiration date. Smart cards which is similar in size to a credit card or ATM card stores data on a thin microprocessor embedded in the card. Smart card contain a processor and have input process, output and storage capabilities. When you insert the smart card in a specialized card reader, the information on the smart card is read and if necessary updated. Microfilm and microfiche film store microscopic images on a roll or sheet film. Enterprise storage store huge volume of data and information for large business. Uses special hardware for heavy used, maximum availability and maximum efficiency.
3. Types of Flash memory storage:
a.) flash memory chips are a type of solid state media contains electronic components and contains no moving parts.
b.) Solid state drives have several advantages over magnetic hard disk
c.) Memory card is a memorable flash memory device that you insert and remove from the slot in a computer, mobile device, or card reader/writer
d.) USB flash drive plug into a USB port on a computer or mobile device
e.) Express card module is a removable device that fits in an Express card slot
4. Types of Optical Disc:
a.) CD's previously compact discs (abbreviated as CD) were used only for recording and storing audio files. Subsequently along with audio, video and other data is also stored on them. These discs can store data for long time. The data is stored on the CDs in optical format. Backup can be stored on the CDs.
b.) Archive disc stores photos from an online photo center, resolution is usually 7200 pixels per photo, cost are determined by the number of photos being stored.
c.) Picture CD single session CD-Rom that stores digital version of film, typically uses a 1024x1536 resolution
d.) DVD's The format of storing data in the digital versatile discs (DVD) is similar to that of a compact disc. The difference lies in the storage capacity. There is six times more storage space in the DVD’s as compared to the CD’s. Like the CD’s, DVD’s are also used as backup device.
e.) Blu-ray are abbreviated as BD, are used for high definition video storage. It is often used by gamers. Blu-ray discs are similar to the CD’s and DVD’s in their looks. It is the memory space which makes all the difference between the CD’s, DVD’s and BD’s. Blu-ray disc is an optical storage device.
5. Characteristics of Printers:
a.) Ink-printers is a type of computer printer that creates a digital image by propelling droplets of ink onto paper. Inkjet printers are the most commonly used type of printer and range from small inexpensive consumer models to very large professional machines.
b.) Photo printers are printers specially created to print photos. Presently all of these are inkjet printers. They are of a smaller size and use special photo paper in the usual photo sizes like 4 X 6 etc. They allow printing without connecting through the PC by using PictBridge. They also have interfaces to connect digital camera or memory cards, and a screen to preview the photo. Some also allows rudimentary editing of the photo before printing.
c.) Laser printers apidly produces high quality text and graphics. As with digital photocopiers and multifunction printers (MFPs), laser printers employ a xerographic printing process but differ from analog photocopiers in that the image is produced by the direct scanning of a laser beam across the printer's photoreceptor. This is the most often purchased printer today. Its high quality print output outfoxes prints from other printer types. The text and graphics are printed with quality result. The reason why there are lots of people who choose lasers despite is comparatively higher price is that it is economical. Its LED technology helps reduce the use of toner from a cartridge. It takes small particles in minimal amount to give out quality prints..
d.) Multifunction peripherals is an office machine which incorporates the functionality of multiple devices in one, so as to have a smaller footprint in a home or small business setting (the SOHO market segment), or to provide centralized document management/distribution/production in a large-office setting. A typical MFP may act as a combination of some or all of the following devices:
e.) Thermal printers work by selectively heating regions of special heat-sensitive paper. Monochrome thermal printers are used in cash registers, ATMs, gasoline dispensers and some older inexpensive fax machines. Colours can be achieved with special papers and different temperatures and heating rates for different colours; these coloured sheets are not required in black-and-white output. One example is the ZINK technology. This is very common among department stores and malls. Thermal printer are convenient to be used by cashiers because it allows the calculations and giving the print out at the same time in fast manner. Fax machines also have this kind of technology. This, however, works only on papers that are heat sensitive. It operates by having the heated pins pushed against the medium.
f.) Mobile printers
g.) Label and postage printers
h.) Plotters and large format printers is a vector graphics printing device which operates by moving a pen over the surface of paper. Plotters have been used in applications such as computer-aided design, though they are rarely used now and are being replaced with wide-format conventional printers, which nowadays have sufficient resolution to render high-quality vector graphics using a rasterized print engine. It is commonplace to refer to such wide-format printers as "plotters", even though such usage is technically incorrect. There are two types of plotters, flat bed and drum.This type of printer is ideal for printing larger drawings. High quality print out is made out of having the pen plotters pen move across the surface of the medium. This is the most unique printer so far invented and available in the market.
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