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Computer Networking
Published in Mohssen Mohammed, Al-Sakib Khan Pathan, Automatic Defense Against Zero-day Polymorphic Worms in Communication Networks, 2016
Mohssen Mohammed, Al-Sakib Khan Pathan
Daisy chaining means connecting a device with another device in a sequence. In this topology, we basically extend the point-to-point topology by adding a number of devices (computers, switches, or other items) in a series. Figure 2.2 illustrates the daisy-chain topology. Such topology basically could take two shapes: linear and ring. Ring qualifies for being counted as a separate topology, which we present further in the chapter. In fact, many topologies are slight variants of other topologies, or the basic topologies are often present in the other complex topologies. Daisy chaining is also the basic method used for the bus topology (which is mentioned in the next section).
Desktop Publishing
Published in Paul W. Ross, The Handbook of Software for Engineers and Scientists, 2018
The daisy wheel printer is most commonly encountered in electronic typewriters. The mechanism is quite simple. The fonts are formed of plastic or metal and placed on thin strips much like the petals of a flower, hence the name, daisy wheel printer. An inked ribbon, or single-strike carbon ribbon is interposed between the print wheel and the paper. An electrically driven hammer is activated to bring the type face in contact with the ribbon, pressing it against the paper to form the letter. The type wheel is rotated by a precision stepper motor to select the desired letter.
Disk Storage and Media Servers
Published in David Austerberry, Digital Asset Management, 2012
A number of different cables and connectors are used for the SPI. These include ribbon, twisted-pair shielded and unshielded, and connectors with 50, 68, and 80 pins. The usual configuration for a SCSI system is to link the devices together as a daisy chain or string. The end of the cable remote from the HBA is terminated.
Assistive technology for visual impairment and trainers at schools for the blind in Delhi
Published in Assistive Technology, 2022
Suraj Singh Senjam, Allen Foster, Covadonga Bascaran
We used the term Assistive Technologies (AT) as defined by the World Health Organization (World Health Organization, 2016). A questionnaire was developed to assess the availability of 52 ATs for people with visual impairment, categorized into seven domains, based on school activities – “Reading-9”, “Writing-12”, “Maths-8”, “Sciences-4”, Games & sports-6”, “Mobility-6” and “Activities of Daily Living-7” (Appendix A). A brief description of each ATVI device was explained to the principal of the school, and a pictorial booklet of ATVI was developed so as to avoid confusion about terminology (Figure B1). The ATVI were also classified into vision-based ATs (VAT), e.g., large print books and magnifiers, etc., and tactile or sound-based ATs (TAT), e.g., Braille, or DAISY (Digital Accessible Information System) books depending on whether the AT use needs vision or visual substitution skills like sound or touch. Students with some residual vision, binocular best corrected visual acuity (BCVA) less than <6/18 to 1/60 can often benefit from VAT.