What is USB port? Give
five examples that use USB port.
Answer: USB, short for Universal Serial Bus, is a widely used
is a cable system that includes physical cables, connectors and communication
protocols.Intel invented this technology and now it is very popular. It can
transfer data with a very high speed. In the primary level it could transfer
data in 12 Mb speed. Later it increased in 480 Mb pm. In USB 3.0 the speed is 5
GBPS.
A USB port is a standard cable
connection interface on personal computers and consumer electronics. Nowadays most of the peripherals and devices
use USB cables to connect to computers – cameras, printers, scanners, external
drives, etc.
1.
USB Flash Drives.
2.
USB External Hard Drives.
3.
USB External DVD/CD/Blu-Ray
Drives.
4.
Powered USB Hubs.
5.
USB Speakers.
6.
USB Microphones.
7.
USB Headsets.
8.
USB charging lasers.
What is computer memory?
Write the types of computer memory with examples.
Answer: Memory: The memory is
another very important element of the computer. Without memory the computer
cannot operate in present age. Modern age it is called the RAM. The main reason
behind the memory is that it is rapidly communication with the processor. In
which unit stores given data instruction, program and result is memory or
memory unit.
Function of memory unit:
a)
Program must be loaded here to
be executed
b)
Data mast be read into here to
be processed
c)
Information will be taken from
here to be output
d)
The data and instructions
required for processing
e)
Sometime we need to stored data
even after passing through output unit.
There
are two types main memory
1.
Primary memory: RAM, ROM, Cache
memory
2.
Secondary memory: Hard Disk
Drive, Floppy Disk Drive, DVD, Pen Drive
There are two types of build in memory
1.
Permanent /non-volatile memory:
Read-only memory, flash memory,
2.
Non-permanent/volatile memory:RAM,
HDD
What is Printer? Write
down the types of Printer.
Answer: A printer is a device that
accepts text and graphic output from a computer and transfers the information
to paper, usually to standard size sheets of paper. Printers vary in size,
speed, sophistication, and cost. In general, more expensive printers are used
for higher-resolution colour printing.
Computer Printers - Types of Computer
Printers
a)
Inkjet Pinter.b)
Laser Printer.c)
Plotters Printer.d)
Dot-matrix Printer and.e)
Thermal Printer.f)
Inkjet Printer: - Inkjet
printers one of the user-friendly computer printers. ...g)
Laser Printer: - Laser printer
uses LED-technology to obtain small particles of toner from a cartridge into
paper.
A printer is an outer equipment yield gadget that takes the electronic information put away on a computer or other gadget and produces a printed copy. For instance, in the event that you made a report on your computer, you could print a few duplicates to pass out at a workforce gathering. Printers are one of the most mainstream computer peripherals and are usually used to print text and photographs. The image is an illustration of an inkjet computer printer, the Lexmark Z605.
Types of printers
HP laserjet printer
The following is a rundown of the multitude of various sorts of computer printers. Today, the most well-known printers are inkjet and laser printers.
3D printer
AIO (across the board) printer
Spot framework printer
Inkjet printer
Laser printer
Driven printer
MFP (multifunction printer)
Plotter
Warm printer
Printer interfaces
USB link and port
There are a couple of various ways a
printer can associate with and speak with a computer (alluded to as interfaces). Today, the most widely recognized association types are by USB link (wired) or through Wi-Fi (remote). The following is a full rundown of links and interfaces used to associate a computer to a
printer.
What are the advantages and employments of a printer?
Each sort of
printer has various kinds of employments. Instances of more regular employments of printers incorporate the accompanying.
3D printer
Print devices or parts expected to fabricate something.
Print new parts for something that has broken.
Print toys for youngsters.
Print objects to be sold.
Print duplicate of a record for school.
Print a paper that can be genuinely marked.
Print shaded pictures that can be seen without a screen or cell phone.
Print receipts for buys made on the web.
Rapidly print several content archives or pages.
Print printed versions of expert or authoritative records.
Who created the printer?
Over the advancement of the
printer, there were a few kinds of printers created. Along these lines, there is no single creator refered to for the printer. In any case, the primary individual to imagine a mechanical printing gadget is Charles Babbage, who made it with his Difference Engine during the 1800s. See the following segment for a posting of various individuals and organizations behind different sorts of printers utilized today.
History of different printers and how they work
Mechanical printer
The principal mechanical
printer was created by Charles Babbage, for use with the Difference Engine, which Babbage created in 1822. Babbage's printer used metal bars with printed characters on every bar to print text on moves of paper that were taken care of through the gadget.
Speck grid printer
IBM made the principal spot network
printer in 1957. Nonetheless, the principal spot grid sway
printer was presented by Centronics in 1970. To make letters and pictures, the print head, which contains pins, sits over an ink strip. This lace rests over a bit of paper. As the print head gets across the strip (typically on a level plane), the pins press into the lace to engrave ink onto the page (like a typewriter). As these pins print a progression of spots, you can see where this printer got its name.
Inkjet printer
While inkjet printers began being created in the last part of the 1950s, it wasn't until the last part of the 1970s that they had the option to replicate good computerized pictures. These higher caliber inkjet
printers were created by numerous organizations, including Canon, Epson, and Hewlett-Packard. Inkjet printers are like speck network
printers in that the pictures they make are made out of spots. In any case, the specks on an inkjet printer are shot onto the page as opposed to utilizing a lace and pins. Moreover, an inkjet printer's dabs are a lot more modest, and their print speed is quicker. See our inkjet printer page for additional data about this printer.
Laser printer
In the mid 1970s, Gary Starkweather concocted the laser printer while working at Xerox by changing one of their model 7000 copiers. Nonetheless, it wasn't until 1984, when Hewlett-Packard presented the HP LaserJet that laser printers turned out to be all the more broadly accessible and reasonable. The next year, Apple presented the Apple LaserWriter, which acquainted PostScript innovation with the printer market. Laser printers are more mind boggling than their archetypes. For data on how they work, see our laser printer definition.
3D printer
Throw Hull made the 3D printer in 1984. 3D
printers work by taking a computerized outline of an item and replicating it layer-by-layer utilizing different materials, for example, plastic and metal amalgams. See our 3D printer definition for additional data.
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