Thursday, July 26, 2012

What Is Input And Output Devices Of Computer?

In this tutorial, I am going to describe all the latest Input and Output devices of computer. All beginners of computer can take this lesson as a reference for the latest computer devices which can be used as a input or output device to instruct the computer. So, Let's begin the tutorial.

List of devices which I will mention in this tutorial:
Input Devices: 

  • Keyboard
  • Mouse
  • Joystick
  • Scanner
  • Digital Camera
  • Bar Code Reader
  • Touch Screen
  • Microphone

Output Devices:

  • Monitor
  • Speaker
  • Printers
  • Plotters

Introduction
The computer will be of no use unless it is able to communicate with the outside world. Input/Output devices are required for users to communicate with the computer. In simple terms, input devices bring information INTO the computer and output devices bring information OUT of a computer system. These input/output devices are also known as peripherals since they surround the CPU and memory of a computer system.

Let's begin with Input Devices:

Keyboard as a Input Device: It is a text base input device that allows the user to input alphabets, numbers and other characters. It consists of a set of keys mounted on a board. I will describe all the keys below:

Keyboard
Keyboard
Alphanumeric Keypad
It consists of keys for English alphabets, 0 to 9 numbers, and special characters like + − / * ( ) etc.

Function Keys
There are twelve function keys labeled F1, F2, F3… F12. The functions assigned to these keys differ from one software package to another. These keys are also user programmable keys.

Special-function Keys
These keys have special functions assigned to them and can be used only for those specific purposes. Functions of some of the important keys are defined below.

Enter Key
It is similar to the ‘return’ key of the typewriter and is used to execute a command or program.

Spacebar or Space Key
It is used to enter a space at the current cursor location.

Backspace Key
This key is used to move the cursor one position to the left and also delete the character in that position.

Delete Key
It is used to delete the character at the cursor position.

Insert Key
Insert key is used to toggle between insert and overwrite mode during data entry.

Shift Keys
This key is used to type capital letters when pressed along with an alphabet key. Also used to type the special characters located on the upper-side of a key that has two characters defined on the same key.

Caps Lock Key
Cap Lock is used to toggle between the capital lock features. When ‘on’, it locks the alphanumeric keypad for capital letters input only.

Tab Key
Tab is used to move the cursor to the next tab position defined in the document. Also, it is used to insert indentation into a document.

Ctrl Keys
Control key is used in conjunction with other keys to provide additional functionality on the keyboard.

Alt Keys
Also like the control key, Alt key is always used in combination with other keys to perform specific tasks.

Esc Key
This key is usually used to negate a command. Also used to cancel or abort executing programs.

Numeric Keypad
Numeric keypad is located on the right side of the keyboard and consists of keys having numbers (0 to 9) and mathematical operators (+ − * /) defined on them. This keypad is provided to support quick entry for numeric data.

Cursor Movement Keys
These are arrow keys and are used to move the cursor in the direction indicated by the arrow (up, down, left, right).


Mouse as a Input Device: The mouse is a small device used to point to a particular place on the screen and
select in order to perform one or more actions. It can be used to select menu commands, size windows, start programs etc. The most conventional kind of mouse has two buttons on top: the left one being used most frequently.
Mouse
Mouse
Mouse Actions
Left Click: Used to select an item.
Double Click: Used to start a program or open a file.
Right Click: Usually used to display a set of commands.
Drag and Drop: It allows you to select and move an item from one location to another. To achieve this place the cursor over an item on the screen, click the left mouse button and while holding the button down move the cursor to where you want to place the item, and then release it.

Joystick as Input Device: The joystick is a vertical stick which moves the graphic cursor in a direction the stick is moved. It typically has a button on top that is used to select the option pointed by the cursor. Joystick is used as an input device primarily used with video games, training simulators and controlling robots.

Joystick
Joystick
Scanner as Input Device: Scanner is an input device used for direct data entry from the source document into the computer system. It converts the document image into digital form so that it can be fed into the computer. Capturing information like this reduces the possibility of errors typically experienced during large data entry. Hand-held scanners are commonly seen in big stores to scan codes and price information for each of the items. They are also termed the bar code readers.
Scanner
Scanner
Bar Codes Reader: A bar code is a set of lines of different thicknesses that represent a number. Bar Code
Readers are used to input data from bar codes. Most products in shops have bar codes on them.Bar code readers work by shining a beam of light on the lines that make up the bar code and detecting the amount of light that is reflected back.

Light Pen as a Input Device: It is a pen shaped device used to select objects on a display screen. It is quite like the mouse (in its functionality) but uses a light pen to move the pointer and select any object on the screen by pointing to the object. Users of Computer Aided Design (CAD) applications commonly use the light pens to directly draw on screen. 

Touch Screen as a Input Device: It allows the user to operate/make selections by simply touching the display screen. Common examples of touch screen include information kiosks, and bank ATMs.
Monitor
Monitor
Digital camera as a Input Device: A digital camera can store many more pictures than an ordinary camera. Pictures taken using a digital camera are stored inside its memory and can be transferred to a
computer by connecting the camera to it. A digital camera takes pictures by converting the light passing through the lens at the front into a digital image.

Microphone or Headphone as a Input Device: The “Microphones - Speech Recognition” is a speech Input device. To operate it we require using a microphone to talk to the computer. Also we need to add a sound card to the computer. The Sound card digitizes audio input into 0/1s .A speech recognition program can process the input and convert it into machine-recognized commands or input.
Headphone
Headphone
Now lets begin with Output Devices:
Monitor as a Output Device: 
Monitor is an output device that resembles the television screen and uses a Cathode 
Ray Tube (CRT) to display information. The monitor is associated with a keyboard for manual input of characters and displays the information as it is keyed in. It also displays the program or application output. Like the television, monitors are also available in different sizes.
Monitor
Monitor
Liquid Crystal Display (LCD) as a Output Device: LCD was introduced in the 1970s and is now applied to display terminals also. Its advantages like low energy consumption, smaller and lighter have paved its way for usage in portable computers (laptops).

Printer as a Output Device: Printers are used to produce paper (commonly known as hardcopy) output. Based on the technology used, they can be classified as Impact or Non-impact printers. Impact printers use the typewriting printing mechanism wherein a hammer strikes the paper through a ribbon in order to produce output. Dot-matrix and Character printers fall under this category. Non-impact printers do not touch the paper while printing. They use chemical, heat or electrical signals to etch the symbols on paper. Inkjet, Deskjet, Laser, Thermal printers fall under this category of printers. When we talk about printers we refer to two basic qualities associated with printers: resolution, and speed. Print resolution is measured in terms of number of dots per inch (dpi). Print speed is measured in terms of number of characters printed in a unit
of time and is represented as characters-per-second (cps), lines-per-minute (lpm), or pages-per-minute (ppm).
Printer
Printer
Plotter as a Output Device: Plotters are used to print graphical output on paper. It interprets computer commands and makes line drawings on paper using multicolored automated pens. It is capable of producing graphs, drawings, charts, maps etc. Computer Aided Engineering (CAE) applications like CAD (Computer Aided Design) and CAM (Computer Aided Manufacturing) are typical usage areas for plotters.

Speakers as a Output Device: The Audio output is the ability of the computer to output sound. Two components are needed: Sound card – Plays contents of digitized recordings, Speakers – Attached to sound card.
Speakers
Speakers
Conclusion: In this tutorial, I have given an introduction to the Input/Output devices of Computer. It gives a detailed listing of the various types of input devices and the output devise. The concepts are also very clearly understood by seeing at the figures in the chapter.

Thursday, July 26, 2012 by Unknown · 0

Sunday, June 24, 2012

Micromax Funbook

Key Features of Micromax Funbook (Slate Grey)
  • Android v4.0 (Ice Cream Sandwich) OS
  • 7-inch Capacitive Touchscreen
  • 1.2 GHz Cortex A8 Processor
  • 0.3 MP Primary Camera
  • Wi-Fi Enabled
  • Expandable Storage Capacity of 32 GB
MicroMax FunBook
Specifications of Micromax Funbook (Slate Grey)
General
Processor: 1.2 GHz Cortex-A8
Graphics: Dual Mali-400MP
In The Box: Tablet, Charging Adapter, USB Cable, User Guide, Warranty Card

Platform
Operating System: Android 4.0 (Ice Cream Sandwich)
Sensors: Accelerometer, Gravity Sensor

Memory
RAM: 512 MB

Storage
Internal Storage: 4 GB
Expandable Storage Capacity: 32 GB
Memory Card Slot type: microSD

Display
Display Type: 7 inch Capacitive Touchscreen with 800 x 480 pixels
Other Display Features: Multi-touch Screen

Camera
Primary Camera: 0.3 megapixels

Business Features
Document Support: Document Viewer , Document Editor
Other Business features: Live TV

Battery
Battery Type: 2800 mAh
Internet Browsing Time: 5 hrs

Internet Connectivity
Wi-Fi: Yes , 802.11 b/g

Multimedia
Video Playback: Yes , HD Playback
Video Formats Supported: MPEG2, MPEG4, AVI, WMV, 3GP, MOV, MKV, RM, RMVB
Audio Formats Supported: MP3, WMA, FLAC, WAV

Connectivity
HDMI: Yes
Other Connectivity Features: 3G Dongle Support Via USB and Only Support Tata Photon Dongle
USB: Yes, USB 2.0

Dimensions
Dimensions: 122 x 192 x 10 mm
Weight: 360 g

Additional Features
Resizable Widgets, Games, There is No Sim Slot and Can Not Make Calls, Handset Does not Come with Tata Photon Dongle, Customer need to Produce a Funbook Bill in the Nearest Tata Store to Buy an Dongle which will Cost RS: 500 -/-

Some reviews about Micromax Funbook:

Good But Be Careful..!
Finally received this tablet from another store since its not available on flipkart yet(as on 16-04-2012)....been using it since a week now and now i guess i can tell u all the flaws basically since other reviews only tell you what already is written on the box or in the specifications,,,,,,,

First of all,the tablet isn't that gr8 to look at,i mean its "OK",nothing too good bout it

Secondly,mine went gaga while typing once,had to do a factory reset and been working alright since then,i hope it doesn't do that again,

Thirdly,web browsing isnt a gr8 experience,its "NICE" though

Fourthly,hardware buttons look like a cheap tablet buttons, there was no need to do that,i searched Google and saw this tablet sold in open market by some other Chinese name so basically what micromax has done is buy a cheap tablet,used the micromax stamp and sold it to us,typically Indian

Fifthly,camera sucks,o man its filthy, Skype video call is a shame,i tried calling a buddy with a same tablet and the sound was like barking dogs and video was like green strips,rest u guys can imagine,i felt like smacking the tablet in the wall(yes it does have a inbuilt microphone)

Sixthly,it does make u feel every now and then that its a 6k tablet

NOW THE GOOD THINGS(keeping in mind it costs only 6.5k)
screen brightness is good and the touch itself is very nice
YouTube works flawlessly
eBook reading is nice too
gaming is a good experience
applications start w/o lag
 I didn't find the speaker too bad,they are nice,i like hearing some music and its nice to have this tablet around
android 4.0.3 ICS is good interface,just the feel of it is nice

If this is going to be your first tablet u are gonna love the hell out of it but if u have used anything like Samsung or apple or blackberry and u are gonna compare it to them then its gonna be hard for you to justify why u bought it.....as far as i am concerned i am giving it a 3 out of 5 stars.....a good tablet but nothing great....useful but not essential....cheap cool but not crazy.....if u cnt afford 25k tablets u should go nowhere else and buy this one straight....

Best Tablet Ever
The original tablet is player momo9 which has been re branded as micromax funbook the tablet is excellent and gives a good battery backup for more than 3 hrs. Plays HD videos very well. Those who have problem with Skype its not micromax problem it is problem with the Skype app with the recent android ICS tablets i don't no why people just blindly accuse the brand without even thinking or trying to solve the problem google for the compatible versions and install it and the issue will be solved. Regarding the dongle being only supported of tata photon this is not true exactly i used my own 3g service with aircel sim all you need to do is follow these steps

1. With the given Extension card for connecting the USB port connect your data card.
2. Go to Settings--> Select More--> then Mobile Networks
3. Enable Mobile network and also enable data while roaming.
4. Click on the Mobile networks, in that you can see "TATA" with the dial number #777.
5. Click that, it will go inside that option,
6. Then Scroll to the user name and password section.
7. Select and enter your user name and password of your data card.

I hope my review would have helped many.

PS: Buy products of which you are aware of don't blame the manufactures or the distribution brand for it and for gods sake learn to use GOOGLE before posting unwanted things.

Micromax "Funbook" Tablet
Its An amazing buy at this Price (Rs. 6499), I bought It The day very fast to get a glimpse of The Micromax Tablet After the success of The Superfone Series.
*The Tablet is extra smooth thanks to the 1.22 Ghz A8 Cortex Processor.
*Backstab HD, Asphalt 6 HD, And Nearly All High Graphics games work seamlessly Thanks to the Dual-Mali 400 GPU (Used By Galaxy S2).
*VGA Camera is surprisingly great, seems like a 1MP Atleast according to the Picture Quality, great for Skype, And other Video Chatting Apps.
*ICE CREAM SANDWICH Is simply amazing much better than the Honeycomb, Though Design is pretty Much The same, Adding Additional Widgets Really Improve your Home page.
*1080p Be it AVI, MKV, OR even 3D Movies (Red/Cyan) work Smoothly, The HDMI Port is a Superb Addition for HD TV's.
- Battery Could have Been Better, lasts for 4 Hours on Full Usage, But On Standby Can Last for 10 Hours With Moderate Usage Occasionally.
- 512MB Ram which reduces to 400 On Software Should Have been higher.
GO FOR IT SURELY NO DOWN SIDE AT THIS PRICE.

Sunday, June 24, 2012 by Unknown · 0

Wednesday, June 13, 2012

Examples Of Input Output Devices.

A fundamental pc program has a pc, keep track of, computer keyboard, as well as computer mouse. There's also a lot of add-ons as well as peripherals that may be additional. Let us check out that they just about all interact.

Should you had been to create a good example in order to the body, the actual pc will be such as the mind, the actual keep track of -- the actual mouth area, the actual computer keyboard as well as computer mouse -  eye as well as ear.... The actual pc regulates all of the performance within the program. Another products exist to provide the actual pc advices and also to supply this along with results.

Let us tell you a good example, let's imagine the consumer squeezes the computer keyboard crucial - ESC. The actual computer keyboard goes by which enter to the pc (the brain). The actual pc after that chooses upon how to proceed with this particular transmission - that depends upon exactly what the actual pc happens to be performing. State the actual pc made the decision which ESC implies that it will leave from what ever software it's presently within. This leaves the applying as well as transmits an indication towards the keep track of (output) to exhibit a brand new image, 1 exactly where which software is actually shut.

You will find loads associated with additional products that may be blocked into the pc, a number of them tend to be enter products, a few result products, plus some tend to be each. A good just about all in a single printer/scanner could be each a good enter as well as a good result gadget, print(output) as well as scan(input).

Occasionally the actual splitting up associated with products is not everything obvious, such as inside a laptop computer. The actual pc, keep track of, as well as computer keyboard are within the exact same container. However the splitting up associated with elements nevertheless is available, even though they do not possess room in between all of them. Within the laptop computer, the actual pc continues to be individual in the computer keyboard as well as in the keep track of, also it nevertheless views these phones end up being input/output products it may contact.

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Some type of computer may be the modernity's essential gadget and also the tag associated with technologies delivered to the actual public. This consists of complicated as well as elaborate buildings however it's very simple to use. The actual plainest description of the pc is actually it signifies the device which gets enter, procedures this after which creates result. The actual system is straightforward within idea however offers huge possible within exactly what issues the different outcomes which come because result. The actual operating theory is actually made with the formula "the enter is available in as well as creates output". Consequently, to comprehend the actual technical procedures which happen within the pc, 1 has to understand concerning the romantic relationship input-output (I/O), thoughts associated with digesting as well as storage space.

The very first concept- I/O- is in the foundation from the exercise of the pc. Some type of computer consists of elements which are split in to 2 courses based on their own perform. Both of these courses tend to be enter components as well as result types. By way of enter products which are attached to the actual pc, the info makes its way into the machine. The actual computer keyboard, the actual computer mouse, scanning devices as well as digital camera models deliver info towards the pc and therefore are types of enter elements. When the pc gets the info, this transmits this in order to result products which create various outcomes. Consequently, the actual picture about the display, the actual seem in the speaker-boxes, the actual webpages imprinted tend to be pictures from the idea result. The actual keep track of, the actual loudspeakers, the actual inkjet printer are thought result products.

The actual modem is really a gadget which deals with each enter as well as result since it gets but additionally transmits info. The actual pc's storage space program is actually an additional instance associated with each input-output working element. The info delivered to the actual pc is actually prepared prior to it's delivered to the actual result products. With no digesting phase, the info would not end up being appropriate any longer and also the pc will be just like a pipe. The actual processor chip accounts for the game associated with changing the actual enter information within result. The actual processor chip works based on a few directions organised as the program.

Output Devices
The final component within the pc formula may be the storage space, that signifies the actual "space" in which the processor chip works it's exercise. Pc storage space is actually associated with 2 types: short-term as well as long-term.

Short-term storage space, also known as MEMORY, materials the actual pc along with storage, exactly where applications operate and also the info is actually saved although it is actually done. Once the microprocessor is not straight focusing on the info, long-term storage space enables the actual pc in order to save information upon storage space press. Hard disk drives, press credit cards, expensive hard disks, optical dvds, Compact disks as well as Dvd disks tend to be this kind of storage space press. These people conserve info which may be remembered with regard to later on make use of.

Producing a good example between your pc as well as the body, MEMORY (random entry memory) is the same as a person's storage. All of us briefly shop info within our mind. To ensure all of us remember this, all of us create this lower. The actual mat associated with document accustomed to create the actual obtained info is the same as long-term storage space.

The actual pc by itself -- the actual equipment -- offers numerous components. However the crucial elements fall under among the 4 groups: processor chip, storage, enter as well as result, as well as storage space.

The actual Processor chip. Digesting may be the process which changes uncooked information in to helpful info. To do this particular change, the actual pc utilizes 2 elements: the actual processor chip as well as storage. The actual processor chip is much like the mind from the pc. This sets up as well as bears away directions which come through possibly the consumer or even the program. Inside a pc, the actual processor chip includes a number of microprocessors that are silvers associated with silicon or even additional materials etch along with numerous small digital circuits. In order to procedure information or even total a good coaching from the person or perhaps a plan, the actual pc goes by electrical power with the circuits.

An individual pc's processor chip is generally a solitary nick or even some potato chips included on the signal panel. In certain effective computer systems, the actual processor chip includes numerous potato chips and also the signal planks which the actual potato chips tend to be installed.

Storage. It's as an digital the begining mat within the pc. Whenever you release a course, it's packed in to storage with regard to quick entry. Because brand new information is actually joined to the pc, it's also saved within storage, however just briefly. The most typical kind of storage is known as arbitrary entry storage or even MEMORY. Consequently, the word storage is often accustomed to imply MEMORY. Information is actually each created in order to as well as study out of this storage. Possibly it is important to consider regarding MEMORY is actually that it's unstable, therefore it requires a continuous way to obtain energy. Whenever you switch off some type of computer, every thing within MEMORY vanishes. Therefore, you need to save your valuable documents to some storage space gadget often.

Enter as well as Result Products. Some type of computer will be ineffective should you couldn't connect to this since the device couldn't obtain directions or even do the trick associated with it's function. Enter products take information as well as directions in the person or even through an additional pc program (such like a pc about the Internet). Result products come back prepared information towards the person in order to an additional pc program.

The most typical enter gadget may be the computer keyboard, that allows characters, amounts, as well as instructions in the person. An additional essential kind of enter gadget may be the computer mouse, that enables you to choose choices through on-screen selections. You utilize the computer mouse through shifting this throughout a set area as well as pushing it's control keys. Virtually every pc offered these days features a computer mouse. Additional well-liked enter products tend to be trackballs, contact patches, joysticks, scanning devices, digital camera models, as well as microphones.

The most typical result products would be the keep track of and also the inkjet printer. The actual pc transmits result towards the keep track of (the show screen) once the person requirements and then begin to see the result. This transmits result towards the inkjet printer once the person demands the document copy- also known as a tough copy- of the record. There are many ink jet printers you are able to select from based on your own require. Study a few on the internet publishing evaluations upon ink jet printers to help you a concept associated with which kind of inkjet printer is actually perfect for you in order to your company. Publishing organization evaluations additionally display what sort of inkjet printer is definitely the peripheral gadget required inside a pc.

Storage space. Some type of computer may perform along with just digesting, storage, enter as well as result products. The same as a few ink jet printers available on on the internet publishing evaluations, these people usually execute a multiple perform work for example inkjet printer, scanning device as well as photo copier. To become truly helpful nevertheless, some type of computer additionally requires a spot to maintain plan documents as well as associated information once they aren't being used. The objective of storage space would be to maintain information completely.

They are points you have to be acquainted with to ensure that whenever you purchase your pc, you'll have a concept exactly how every element functions, as well as therefore, have the ability to deal with all of them.

Wednesday, June 13, 2012 by Unknown · 0

Input and Output Devices of computer.


In computing, input/output, or I/O, refers to the communication between an information processing system (such as a computer), and the outside world, possibly a human, or another information processing system. Inputs are the signals or data received by the system, and outputs are the signals or data sent from it. The term can also be used as part of an action; to "perform I/O" is to perform an input or output operation. I/O devices are used by a person (or other system) to communicate with a computer. For instance, a keyboard or a mouse may be an input device for a computer, while monitors and printers are considered output devices for a computer. Devices for communication between computers, such as modems and network cards, typically serve for both input and output.

Here are some images of Computer's Input and Output Devices.

Input and Output Devices

Printer - An Output Device

Images of Input and Output devices

Keyboard - A input device of computer

Mouse - A input device of computer

Monitor - A input device of computer

Printer - A input device of computer

by Unknown · 1

What is Input and Output devices?

Input Device : Input devices are those devices which are used to give instructions to computer. All these input devices are use to give instructions to a computer. Without the help of input devices we will not be able to give any instructions to computer thus computer cannot process for further processing. Thus our work will not done without using an input device. Below are the some images of input devices.


Examples :

  1. Keyboard - Keyboard is an input devices which is used to type any alphabet letters and symbols etc.
  2. Mouse - Mouse is use to give instructions by pointing to a object in computer.
  3. Scanner - Scanner is used for scanning a image.
  4. Light Pen - Light pen is used to give instructions directly to monitor.

Input Devices of Computer

Output Devices : Output devices are those devices which is used by computer to display the results. When we give some instructions to computer it process the data and display it to a output devices. Without the help of a output device we cannot see the results. Below are the images of output devices of computer.
  1. Monitor - Monitor is used to display all the data in computer.
  2. Printer - Printer is used to print data on a paper.
  3. Speaker - Speaker is used to listen songs on a computer.
  4. Headphone - Headphone is also used to listen songs as well as given instructions to computer. Headphone is an input and output device.
Output Devices of Computer
Some more images of Input and Output Devices :

Keyboard - Input Device

Mouse - Input Device

Scanner - Input Device

USB Stick/Pen Drive - Input Device

Monitor - Output Device

Printer - Output Device

Speakers - Output Device

by Unknown · 0

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