Itfc III Assignment

8/13/2019 Itfc III Assignment

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Ques. 1- Identify the usage areas ofdifferent types of mouse, scanner,

printers.

Ans.-

1. Mouse:-

M echani cal mouse : Houses a hardrubber ball that rolls as the mouse ismoved. Sensors inside the mouse

body detect the movement andtranslate it into information that thecomputer interprets. Optical mouse : Uses an LED sensorto detect tabletop movement and thensends off that information to thecomputer for merry munching.
http://www.dummies.com/how-to/content/the-different-types-of-computer-mice.html#glossary-LEDhttp://www.dummies.com/how-to/content/the-different-types-of-computer-mice.html#glossary-LED


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I nf rared (I R) or radio f requencycordless mouse : With both thesetypes, the mouse relays a signal to a

base station wired to the computer'smouse port . The cordless mouserequires power, which comes in theform of batteries. A mouse with many buttons : Theextra buttons can be programmed todo specific things, such as navigatethe Web or turn pages when youre

reading a document. The typical button-infield mouse has about five buttons. Trackball mouse : Like an upside-down mouse. Rather than roll themouse around, you use your thumb orindex finger to roll a ball on top of themouse. The whole contraption stays
http://www.dummies.com/how-to/content/the-different-types-of-computer-mice.html#glossary-base_stationhttp://www.dummies.com/how-to/content/the-different-types-of-computer-mice.html#glossary-base_stationhttp://www.dummies.com/how-to/content/the-different-types-of-computer-mice.html#glossary-porthttp://www.dummies.com/how-to/content/the-different-types-of-computer-mice.html#glossary-programhttp://www.dummies.com/how-to/content/the-different-types-of-computer-mice.html#glossary-trackballhttp://www.dummies.com/how-to/content/the-different-types-of-computer-mice.html#glossary-trackballhttp://www.dummies.com/how-to/content/the-different-types-of-computer-mice.html#glossary-trackballhttp://www.dummies.com/how-to/content/the-different-types-of-computer-mice.html#glossary-programhttp://www.dummies.com/how-to/content/the-different-types-of-computer-mice.html#glossary-porthttp://www.dummies.com/how-to/content/the-different-types-of-computer-mice.html#glossary-base_stationhttp://www.dummies.com/how-to/content/the-different-types-of-computer-mice.html#glossary-base_station


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stationary, so it doesnt need a lot ofroom, and its cord never gets tangled.

Stylus mouse : Another mousemutation enjoyed by the artistic typeis the stylus mouse, which looks like a

pen and draws on a special pad.

Cordless 3-D mouse : This kind ofmouse can be pointed at the computerscreen like a TV remote.

2. Scanner:- F latbed Scanner scans documents,image prints, or those kinds ofthings and produces its digital

copy. Sheet fed Scanner used to scansingle page documents.
http://www.dummies.com/how-to/content/the-different-types-of-computer-mice.html#glossary-stylushttp://www.dummies.com/how-to/content/the-different-types-of-computer-mice.html#glossary-stylushttp://www.dummies.com/how-to/content/the-different-types-of-computer-mice.html#glossary-screenhttp://www.dummies.com/how-to/content/the-different-types-of-computer-mice.html#glossary-screenhttp://www.dummies.com/how-to/content/the-different-types-of-computer-mice.html#glossary-stylus


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for printing invoices, purchaseorders, shipping forms, labels, and

other multi-part forms. Dot matrix printers can print through multi- part forms in a single pass,allowing them to produce more

pages than even high-speed laser printers.

Non-I mpact Pr inter : - L aser Pr inter : - Large printersmay use paper rolls that are cutafter printing I nkjet Pr inter : - It is mainlyused to give color printout as wellas black & white.

Thermal Printer : - It is used incalculators and many faxmachines.


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Ques. 2- Name the different portabledevices.

Ans:- The diff. portable devices are- Mobile Phone

Smart Phone Tablets Notebook Laptops Palmtops, etc.

Ques. 3- Identify the functionality of thegiven- Chipset, Clock Chip, Bus.

Ans.:-( 1.) Chipset:- The chipset consistsof two main components, the North- andSouth- Bridge chips, which areconnected over the PCI bus. The CPU,


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Memory and AGP talk to the Northbridge and the Southbridge handles

all the I/O, including the ISA bus. Thelink between the CPU and Northbridge iscalled Front-side bus, which is (usually)the same speed as the Memory Bus, andcan be varied, as when over clocking.The Back-side bus connects the CPUwith L2 cache. But even this is changing,

because the essential problems that plagued the original PC still haven't goneaway, in that some parts of the machinesimply run too slowly, notably the PCI

bus, which, at 33 MHz, is 10 timesslower than even a 333 MHz CPU. If thatweren't bad enough, all the I/O, including

USB and Fire wire, go through theSouthbridge and hence the PCI bus,losing all that speed advantage. Intel'sintention (starting with 800 series


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chipsets) is to have three majorcomponents, namely a memory controller

hub, an I/O controller hub and afirmware hub, all tied together with a 266Mbps interface. The CPU and AGPwould talk directly to the memorycontroller, and any ISA slots would runthrough the firmware hub.

(2.) Clock Chip: - The clock synchronizesthe operation of all parts of the PC and

provides the basic timing signal for the

CPU. Using a quartz crystal, the CPUclock breathes life into themicroprocessor by feeding it a constantflow of pulses. For example, a 200 MHzCPU receives 200 million pulses persecond from the clock. A 2 GHz CPUgets two billion pulses per second.Similarly, in a communications device, a


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clock may be used to synchronize thedata pulses between sender and receiver.

A "real-time clock," also called the"system clock," keeps track of the time ofday and makes this data available to thesoftware. A "timesharing clock"interrupts the CPU at regular intervalsand allows the operating system to divideits time between active users and/orapplications.

(3.) Bus: - In computer architecture ,

a bus is a subsystem that transfers data between components inside a computer ,or between computers.Early computer buses were literally

parallel electrical wires with multipleconnections, but the term is now used forany physical arrangement that providesthe same logical functionality as a
http://en.wikipedia.org/wiki/Computer_architecturehttp://en.wikipedia.org/wiki/Computerhttp://en.wikipedia.org/wiki/Computerhttp://en.wikipedia.org/wiki/Computer_architecture


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parallel electrical bus. Modern computer buses can use both parallel and serial

connections, and can be wired in eithera multi drop (electrical parallel) or daisychain topology, or connected by switchedhubs, as in the case of USB .

Ques. 4- Indentify the cards inserted inISA, PCI & AGP Expansion Slots.

Ans.:- Video cards AMR Advanced Multi Rate Codec Sound cards Network cards TV tuner cards Modems Host adapters suchas SCSI and RAID controllers.
http://en.wikipedia.org/wiki/Parallel_communicationhttp://en.wikipedia.org/wiki/Multidrophttp://en.wikipedia.org/wiki/Daisy_chain_(electrical_engineering)http://en.wikipedia.org/wiki/Daisy_chain_(electrical_engineering)http://en.wikipedia.org/wiki/Universal_Serial_Bushttp://en.wikipedia.org/wiki/Video_cardhttp://en.wikipedia.org/wiki/Sound_cardhttp://en.wikipedia.org/wiki/Sound_cardhttp://en.wikipedia.org/wiki/Network_cardhttp://en.wikipedia.org/wiki/Network_cardhttp://en.wikipedia.org/wiki/TV_tuner_cardhttp://en.wikipedia.org/wiki/TV_tuner_cardhttp://en.wikipedia.org/wiki/Modemhttp://en.wikipedia.org/wiki/Modemhttp://en.wikipedia.org/wiki/Host_adapterhttp://en.wikipedia.org/wiki/Host_adapterhttp://en.wikipedia.org/wiki/SCSIhttp://en.wikipedia.org/wiki/RAIDhttp://en.wikipedia.org/wiki/RAIDhttp://en.wikipedia.org/wiki/SCSIhttp://en.wikipedia.org/wiki/Host_adapterhttp://en.wikipedia.org/wiki/Modemhttp://en.wikipedia.org/wiki/TV_tuner_cardhttp://en.wikipedia.org/wiki/Network_cardhttp://en.wikipedia.org/wiki/Sound_cardhttp://en.wikipedia.org/wiki/Video_cardhttp://en.wikipedia.org/wiki/Universal_Serial_Bushttp://en.wikipedia.org/wiki/Daisy_chain_(electrical_engineering)http://en.wikipedia.org/wiki/Daisy_chain_(electrical_engineering)http://en.wikipedia.org/wiki/Multidrophttp://en.wikipedia.org/wiki/Parallel_communication


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POST cards BIOS Expansion ROM cards Compatibility card (legacy) Physics cards .(becoming obsolete asthey are integrated into video cards) Disk controller cards (for fixed- orremovable-media drives) Interface adapter cards, including parallel port cards, serial port cards,multi-I/O cards, USB port cards, and

proprietary interface cards. RAM disks, e.g. i-RAM Solid-state drive Memory expansion cards (legacy) Hard disk cards (legacy) Clock/calendar cards (legacy)
http://en.wikipedia.org/wiki/POST_cardhttp://en.wikipedia.org/wiki/POST_cardhttp://en.wikipedia.org/wiki/Compatibility_cardhttp://en.wikipedia.org/wiki/Compatibility_cardhttp://en.wikipedia.org/wiki/Physics_cardhttp://en.wikipedia.org/wiki/Physics_cardhttp://en.wikipedia.org/wiki/I-RAMhttp://en.wikipedia.org/wiki/Solid-state_drivehttp://en.wikipedia.org/wiki/Solid-state_drivehttp://en.wikipedia.org/wiki/Solid-state_drivehttp://en.wikipedia.org/wiki/I-RAMhttp://en.wikipedia.org/wiki/Physics_cardhttp://en.wikipedia.org/wiki/Compatibility_cardhttp://en.wikipedia.org/wiki/POST_card


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Security device cards Radio tuner cards

Ques.5- Difference between CD & MOand Floppy Disk & Pen drive.Ans.:- (1.) Diff . b/w CD & M O- Like thefirst post says...magnetic storage is usedon hard drives and older floppy disks.Sectors of the disk are chargedmagnetically and are easily changed

later. Optical storage uses a laser to readdata. On a CD/DVD, the laser picks uptiny marks made starting in the centerand rotating outward. What makes a blu-ray disk unique is that it uses a different

kind of laser that is much more preciseand can read even smaller marks on adisk. These blu-ray disks can store up toaround 50 GB or data on a dual-layer


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disk compared to 9 GB on a dual-layerDVD.(2.) Diff . b/w Floppy Disk & Pen Drive-The major difference between a pen driveand flash drive is that a pen drive isgenerally only used as a mobile USBstorage device, whereas a flash drive hasmany different uses for data storage.Another difference is that the pen drivealways refers to a drive that can be

plugged directly into a USB port. On the

other hand, a flash drive may beaccessible by a direct USB connection, acorded USB connection, or even storedinternally inside a cell phone or mobilemedia device.

Ques.6- What is Blu Ray Disk?


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Ans.:- Blu-ray Disc (BD ) is an opticaldisk storage medium designed to

supersede the DVD format. The plasticdisc is 120 mm in diameter and 1.2 mmthick, the same size as DVDs and CDs .Blu-ray Discs contain 25 GB per layer,with dual layer discs (50 GB) being thenorm for feature-length video discs.Triple layer discs (100 GB) andquadruple layers (128 GB) are availablefor BD-XL re-writer drives. The majorapplication of Blu-ray Discs is as amedium for video material such asfeature films. Besides the hardwarespecifications, Blu-ray Disc is associatedwith a set of multimedia formats.

Generally these formats allow for thevideo and audio to be stored with greaterdefinition than on DVD.
http://en.wikipedia.org/wiki/Data_storage_devicehttp://en.wikipedia.org/wiki/DVDhttp://en.wikipedia.org/wiki/DVDhttp://en.wikipedia.org/wiki/CDhttp://en.wikipedia.org/wiki/Gigabytehttp://en.wikipedia.org/wiki/Gigabytehttp://en.wikipedia.org/wiki/CDhttp://en.wikipedia.org/wiki/DVDhttp://en.wikipedia.org/wiki/DVDhttp://en.wikipedia.org/wiki/Data_storage_device


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Ques.7- What is Resolution?Ans.:- The resolution of an image incomputer graphics refers to the pixeldensity of said image. For instance, oldermonitors used 800x600 often times. This

means that for every 4 pixels in thehorizontal direction, there are 3 in thevertical. This is where the aspect ratiocomes from, which for an 800x600resolution, is 4:3. The higher the value of

the resolution, the more pixels there are per area of the image or screen, whichmeans that there is more potential forfine detail, and on most systems means acrisper image. If you want to read more,check out the Wikipedia entry aboutdisplay resolutions:


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