Page 111 - DCAP303_MULTIMEDIA_SYSTEMS

Unit 6: Hardware

Another new approach to connecting devices, the USB, provides the same “hot plug” capability as notes
the 1394 standard. It is a less expensive technology but data transfer is limited to 12 Mbps (million
bits per second). The SCSI offers a high data transfer rate (up to 40 megabytes per second) but
requires address pre-assignment and a device terminator on the last device in a chain. FireWire can
work with the latest internal computer bus standard, Peripheral Component Interconnect (PCI),
but higher data transfer rates may require special design considerations to minimize undesired
buffering for transfer rate mismatches.

Collect the information about the USB devices available in the market and also
know that which version of USB is providing quicker speed.

self assessment

Choose the correct answer:
1. Video cards are made which exceed ......... Gigaflops of geometric rendering.
( a) 5 (b) 6
( c) 7 (d) 8
2. The ............. devices use a ribbon cable to connect to each other.
( a) IDE (b) ATA
( c) EIDE (d) None of these

3. The latest SCSI standard is Ultra-3.
( a) True (b) False

6.3 storage Devices

A data storage device is a device for recording (storing) information (data). Recording can
be done using virtually any form of energy. A storage device may hold information, process
information, or both. A device that only holds information is a recording medium. Devices that
process information (data storage equipment) may both access a separate portable (removable)
recording medium or a permanent component to store and retrieve information.
Electronic data storage is storage which requires electrical power to store and retrieve that data.
Most storage devices that do not require visual optics to read data fall into this category. Electronic
data may be stored in either an analogue or digital signal format. This type of data is considered
to be electronically encoded data, whether or not it is electronically stored. Most electronic data
storage media (including some forms of computer storage) are considered permanent (non-volatile)
storage, that is, the data will remain stored when power is removed from the device. In contrast,
electronically stored information is considered volatile memory.

By adding more memory and storage space to the computer, the computing needs and habits to
keep pace, is filling the new capacity.

To estimate the memory requirements of a multimedia project—the space required on a floppy
disk, hard disk or CD-ROM, not the random access sense of the project’s content and scope.
Colour images, Sound bites, video clips and the programming code that glues it all together
require memory; if there are many of these elements, you will need even more. If you are making
multimedia, you will also need to allocate memory for storing and archiving working files
used during production, original audio and video clips, edited pieces, and final mixed pieces,
production paperwork and correspondence, and at least one backup of your project files, with a
second backup stored at another location.

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