Input device and Output device
Write short note on 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.
Personal computer printers can be distinguished as impact or non-impact printers. Early impact printers worked something like an automatic typewriter, with a key striking an inked impression on paper for each printed character. The dot-matrix printer was a popular low-cost personal computer printer. It's an impact printer that strikes the paper a line at a time. The best-known non-impact printers are the inkjet printer, of which several makes of low-cost colour printers are an example, and the laser printer. The inkjet sprays ink from an ink cartridge at very close range to the paper as it rolls by. The laser printer uses a laser beam reflected from a mirror to attract ink (called toner) to selected paper areas as a sheet rolls over a drum.
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Write the name of five Input device and Output device. |
Five Output devices Name
2.Printers (all types)
3.Plotters
4.Projector
5.LCD Projection Panels
6.Computer Output Microfilm (COM)
7.Speaker(s) Head Phone
8.Visual Display Unit
9.Microfiche
10.Film Recorder
Answer: Five Input device Name:
2. Mouse.
3. Light Pen.
4. OMR (Optical Mark Reader)
5. OCR(Optical Character Recognize)
6. Microphone for voice as input.
7. Track Ball.
8. Joystick.
9. Camera.
10, Web cam (PC video camera)
What is Storage device? Write the types of Storage devise.
Answer: Storage device: A storage device is any computing hardware that is used for storing, porting and extracting data files and objects. It can hold and store information both temporarily and permanently, and can be internal or external to a computer, server or any similar computing device.
Types of Storage Devise: Today, magnetic storage is one of the most common types of storage used with computers and is the technology that many computer hard drives use.
1) Floppy diskette
2) Hard drive
3) Magnetic strip
4) Super Disk
5) Tape cassette
6) Zip diskette
7) CD-ROM Optical storage devices
Another common storage is optical storage, which uses lasers and lights as its method of reading and writing data.
1) CD-ROM disc
2) CD-R and CD-RW disc
3) DVD-R, DVD+R, DVD-RW, and DVD+RW disc
Write short notes on
Keyboard.
Answer:Keyboard: Keyboard is the most commonly used input devices of a computer system. It always entry into a computer system by pressing a set of keys (labelled buttons), which are mounted on a Keyboard. A Keyboard may have 84, 101 or 102 keys, but the most popular Keyboard used today has 101 keys. Keyboard has different keys and they are named Function keys, Arrow keys, Numerical keys, Shift key, Enter key, Space key etc.
Storage Device
Storage gadgets are one of the center segments of any figuring gadget. They store practically the entirety of the information and applications on a computer, aside from equipment firmware which is, by and large, oversaw through isolated read-just memory or ROM.
Storage gadgets are accessible in various structures, contingent upon the kind of fundamental gadget. For instance, a standard computer has various storage gadgets including RAM, a reserve, and a hard circle. A similar gadget may likewise have optical circle drives and remotely associated USB drives.
There are two distinct kinds of storage gadgets:
Essential storage gadgets: Generally more modest in size, essential storage gadgets are intended to hold information briefly and are inward to the computer. They have the quickest information access speed. These kinds of gadgets incorporate RAM and store memory.
Optional storage gadgets: Secondary storage gadgets normally have a bigger storage limit, and they store information forever. They can be either inward or router to the computer. These kinds of gadgets incorporate the hard circle, the optical plate drive, and USB storage gadget.
Brief History of Storage Devices
To truly comprehend what storage gadgets used to resemble and what they resemble now, it tends to be useful to take a gander at a background marked by developing storage gadgets as a rule.
Early storage gadgets were crude mechanical frameworks dependent on things like punch cards and later, attractive tape. They introduced double through physical media.
These turned out to be generally outdated when other computerized media was made. To begin with, there were floppy circles and diskettes, at that point, there were conservative plates that could hold a lot of paired in computerized designs.
Simultaneously, computers and different gadgets kept on being made with essential hard drives, where a customary platter is perused by an arm to peruse and compose information.
At last, another choice arose called the strong state drive or SSD.
The New Paradigm: Solid-State Drives and Storage Devices
New strong state drives and storage gadgets store information such that is not the same as the customary platter hard drive.
Strong state storage includes running electrical flows through a substrate as opposed to utilizing a turning hard drive platter. It dispenses with a portion of the mechanical pieces of the customary hard drive. It additionally makes the storage of advanced data significantly more productive.
New computers may have strong state drives as an essential gadget. New blaze drives and thumb drives utilize strong state storage for optional gadgets.
Simultaneously, organizations have been refreshing how they approach storage gadget designing for more extensive undertaking frameworks. Frameworks like Redundant Array of Independent Disk (RAID) plans permit organizations to utilize a progression of drives to store data in "cuts."
At that point the storage zone organization (SAN) advanced, which interfaces together individual storage gadgets to give network storage. Something many refer to as "storage texture" utilizes fiber channel changing to construct network storage for big business frameworks.
Cloud and Virtual Storage
Perhaps the most recent development in storage media includes the cloud and virtualization. With present day frameworks, clients can store information practically, as opposed to utilizing actual equipment on location. For instance, Amazon Web Services offers AWS S3, a kind of article storage where as opposed to being put away in actual hard drive gadgets, clients store information in virtual pails. These sorts of developments speak to the wilderness of where storage media is going.
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