The document discusses input and output devices used in computers. It describes common input devices like the keyboard and mouse which allow users to provide instructions to computers. It also discusses the microphone, scanner, and magnetic ink character reader as input devices. For output devices it covers monitors, printers, and plotters which communicate the results of computer processing to users.

1. INPUT & OUTPUT DEVICES
Submitted to:-
Ram K Paliwal
Assist.Professor
Submitted by:-
Ojas Maheshwari
MBA D

2. CONTENT
INPUT DEVICES
• Keyboard
• Mouse
• Microphone
• Scanner
OUTPUT DEVICES
• VDU (Visual Display Unit)
• Printer
• Plotter

3. INPUTDEVICES:
• An input device is any device that provides input to a computer. There are dozens of possible input
devices, but the two most common ones are a keyboard mouse.
• Input devices convert the user’s action into digital electronic signal that can be processed by a computer.
Without input devices, a user would not be able to feed instructions to a computer.

4. Mouse:
 Mouse is a point and click input device with two or three buttons which controls the movement of the
cursor or pointer on a display screen.
 Its name is derived from its shape, which looks a bit like a mouse, its connecting wire that one can
imagine to be the mouse's tail.
 Types (a)Mechanical Mouse (b) Optical Mouse
Keyboard :
 It is simply a set of typewriter like keys that allows us to enter the data into the computer.
 The keys in the keyboard are classified into 3 groups :
Alpha Numeric Keys
Special keys
Punctuation Keys

5. Microphone:
A microphone is a device that converts mechanical energy (Sound or wave) into electrical energy.
Microphone is a part of everyday life. They are use in computer during the video conference call, chatting,
etc.
Scanner :
Scanner is an input device. It is used to enter pictures, graphs and other documents in computer and allow
saving in different formats.
MICR:
Magnetic Ink character reader.
Characters are printed using special Ink called Magnetic Ink. Ex- cheques
MICR reads it by magnetizing the ink & by examining the shape of the character.

6. OUTPUTDEVICES:
• An output device is any piece of computer hardware equipment used to communicate the results of data
processing carried out by an information processing system (such as a computer) to the outside world.
VDU (Visual Display Unit ) / Monitor
 Monitor or VDU( Visual Display Unit) is an output device used to display data and information.
 Picture on monitor is made up of thousands of tiny colored dots called Pixels.
 Types (a) CRT (b) LCD (c) LED
Printer
 A printer is a device that prints text or illustrations on paper.
 Types (a)Impact (b)Non Impact
Plotter
 It is used to draw pictures on paper based on commands from a computer. Plotters differ
from printers in that they draw lines using a pen.

7. ROUND
Q.1 Speaker is which type of device?
1. Input Device
2. Output Device
3. Storage Device
4. None of them
Q.2 What type of device is Web Camera?
1. Input Device
2. Output Device
3. Storage Device
4. All of them
Q.3 What type of device is scanner?
1. Input Device
2. Output Device
3. Storage Device
4. None of them
Q.4 One Terabyte is equal to?
1.1026 MB
2.1024 GB
3.1000 MB
4.1022 GB

8. ROUND
Q.5 Which one become the first Indian state to
achieve 100 percent primary education ?
1. Kerala
2. Uttarakhand
3. Goa
4. Tamil Nadu
Q.6 Which private sector bank has launched a service recently
where customers can make transactions using just their voice as
a means of authentication?
1. Axis
2. ICICI
3. HDFC
4. SBI
Q.7 Which one is first search Engine?
1. Google
2. Yahoo
3. Archie
4. baidu
Q.8 Who wins the Best Actor award
in Oscar 2016?
1. Johnny Depp
2. Leonardo DiCaprio
3. Brad Pitt
4. Matt Damon