Input Unit
Input Unit
An input device provides an interface between the users and the machine such as keyboard and mouse which enable to control the functions of a computer. They provide a method to access files and folders and to modify data. These devices are used to enter data into the computer .The input/output devices provide the means of communication between the computer and the outer world. A wide variety of input/output devices are now available.
An input device accepts data from the outside world and translates them into a form the computer can interpret. The various types of input devices along with their typical application are described below
Keyboard:
It is one of the most common input devices. Keyboard is used to enter data into computer, which may be numeric or alphabetic form. Layout of keyboard is same as that of typewriter with some additional keys. Generally keyboards are of two sizes 84 keys or 101/102 keys but now 104 keys keyboard is also available for windows 95 etc. Main keyboard: Usual typing key A-Z, 0-9 etc Numeric board: For numeric data or cursor movement Function keys: Used to reduce typing efforts (F1 to F12)
Mouse:
The computer mouse was invented and developed by Douglas Engelbart, with the assistance of Bill English, during the 1960s and was patented on November 17, 1970. The mouse is the most popular point and draw device. Mouse is a small hand held device which can comfortably fit in a user palm. It rolls on a small bearing and has one or more buttons on the top. The graphic cursor which is used to point and draw is displayed on the screen as a variety of symbol such as an arrow. A wrist with a pointing finger etc.
Trackball:
A trackball is a pointing mechanical mouse. The ball that is placed in the base of a mechanical mouse is placed on the top along with the buttons. In case of a track ball the ball is rolled with the fingers to move the graphic cursor around the screen. Some people find it helpful to think of a trackball as an upside-down mouse.
Which of the following could be digital input devices for computers ? | |||
| Right Option : D | |||
| View Explanation | |||
A joystick is primarily used to/for _________ . [IBPS Clerk, SBI PO 2013] | |||
| Right Option : B | |||
| View Explanation | |||
A ______ is used to read handwritten or printed text to make a digital image that is stored in memory. | |||
| Right Option : C | |||
| View Explanation | |||
Students / Parents Reviews [10]
I have spent a wonderful time in Abhyas academy. It has made my reasoning more apt, English more stronger and Maths an interesting subject for me. It has given me a habbit of self studying
Yatharthi Sharma
10thAbhyas is a complete education Institute. Here extreme care is taken by teacher with the help of regular exam. Extra classes also conducted by the institute, if the student is weak.
Om Umang
10thAbhyas Methodology is very good. It is based on according to student and each child manages accordingly to its properly. Methodology has improved the abilities of students to shine them in future.
Manish Kumar
10thMy experience with Abhyas academy is very good. I did not think that my every subject coming here will be so strong. The main thing is that the online tests had made me learn here more things.
Hiya Gupta
8thMy experience was very good with Abhyas academy. I am studying here from 6th class and I am satisfied by its results in my life. I improved a lot here ahead of school syllabus.
Ayan Ghosh
8thBeing a parent, I saw my daughter improvement in her studies by seeing a good result in all day to day compititive exam TMO, NSO, IEO etc and as well as studies. I have got a fruitful result from my daughter.
Prisha Gupta
8thIt was a good experience with Abhyas Academy. I even faced problems in starting but slowly and steadily overcomed. Especially reasoning classes helped me a lot.
Cheshta
10thOne of the best institutes to develope a child interest in studies.Provides SST and English knowledge also unlike other institutes. Teachers are co operative and friendly online tests andPPT develope practical knowledge also.
Aman Kumar Shrivastava
10thA marvelous experience with Abhyas. I am glad to share that my ward has achieved more than enough at the Ambala ABHYAS centre. Years have passed on and more and more he has gained. May the centre flourish and develop day by day by the grace of God.
Archit Segal
7thAbout Abhyas metholodology the teachers are very nice and hardworking toward students.The Centre Head Mrs Anu Sethi is also a brilliant teacher.Abhyas has taught me how to overcome problems and has always taken my doubts and suppoeted me.
