CH 3 INPUT AND OUTPUT DEVICE
QUESTION \ ANSWERS
Q1:- State the different types of mouse .Explain them.
Ans:- There are three type of mouse:-
(1).Mechanical mouse : this type of mouse has a metal or rubber ball on its lower side that can roll in all the directions.the screen pointer moves according to the movement of the ball which is detected by the mechanical sensors within mouse .
(2). Opto-mechanical : this type of mouse uses a mechanism similar to the mechanical mouse .they only difference is that it uses optical sensors to detect the movement of the ball .
(3). Optical mouse : optical mouse does not have any mechanical moving parts
Q2:- Differentiate between impact and non -impact printers .
Ans:-
Impact printer
Non –impact printers
1. Impact printer allows physical contact between the printer head and paper.
1. Non-impact printers do not allow physical contact between the printing heads and paper
2. Impact printers is of two types
2. non-impact printer are of three types
3. Ex:-dot-matrix printer , daisy wheel printer etc.
3. EX:- thermal printers ,ink –jet printers ,laser printers etc.
Q4:- write the difference between a DVD and a CD.
Ans:-
CD
DVD
1.CD stands for compact disc
1.DVD stands for digital versatile disc
2.CD holds from 650 MB to 900 MB
2.DVD can holds 4.7 GB to 17 GB of data
3.CD are of two types
3.DVD are of three types
4.Ex :- CD-R,CD-RW
4.Ex:-DVD-R ,DVD-RW ,DVD-R+DVD-RW
Q5:- Explain the function and usage of a bar -code reader .
Ans:- It is an input device used for reading bar codes present on various products . A bar codes is a combination dark and light strips .it is a very use full device for billing and inventory application.
Q6:- Explain the three main types of Non -impact printers
Ans:-(I).Thermal printer
(II).Ink-jet printers
(III).Laser printers
1.Thermal printers:- Thermal printers is use a special heat sensitive paper characters are formed when heated elements come in contact with heat sensitive paper.
2.Ink-jet printers :- They produce images by spraying tiny droplets of ink on to the paper .the average quality of ink jet printers is 300 dpi (dots per inch)
3.Laser printers :- These printers use photocopy technology to printers .laser printers use a laser beam and dry powdered ink to produce a fine dot matrix pattern.
Q7:-Write the types of monitor? Explain the features.
Ans:-Monitor are of two types
1) Cathode Ray Tube
2) Liquid crystal Display(LCD)
1) CRT:- CRT monitors were the most common monitors untill flat pannel screen become affordable. It consist of a electron gun. CRT monitor are bulky and ocuupy a lot of space.
2)LCD:-LCD monitors are relatively thinner and lighter than CRT monitors. They use the light modulating properties of liquid crystals.
3)Touch Screen Monitor:-A touch screen is a special type of monitors thar]t allows the user to input information by touching the icons or graphical buttons present on the screen.
Q8:-Discuss the various types of memory stick?
Ans:-A memory stick is a removable flash memory card format. It is used as a storage media for portable devices like digital camera, mobile phone etc that can easily connected to personal computers.
Memory stick can come in follow varieties :-
1)Memory stick DUO are basically smaller versions of the memory stick PRO.
2)Memory stick PRO introduced in 2003 as a joint efforts of Sony and Sandisk. It is available in storage sizes upto 1 GB.
Q9:-Differentiate between Flatbed Plotter and Drum Plotter.
Ans:-
Flatbed
Drum
1) Flatbed plotters is known as Table plotter.
1) Drum plotter is known as Roller plotter.
2) It plots on a paper that is spread and fixed over a rectangular Flatbed table.
2) It consist of a Drum on which a paper is placed.
3) A pen monted on a moving carriage moves in accordance with the signals received from the CPU and produces drawing on the paper
3) The pen monted on a fixed carriage moves horizontally across the paper to create a perfect drawing.
Q10:- Explain the various types of keys of a Keyboard?
Ans:-There are mainly five types of key on keyboards :-
1) Typing Keys:- These keys include Letter(Alphabet keys), Numbers(Number keys), Punctuation(. , : , ; , ', ",) and special symbols (+ - * /) etc. These keys also include the shift, caps lock, space bar, backspace, and the tab keys.
2) Control keys:- These keys are either used alone or in combination with other keys to perform an action ctrl, Alt, window log key and esc key are various example of control keys.
3) Function Keys:- They are used to perform specifc tasks. They are placed on the top row of the keyboards and are labelled as F1, F2, F3,.......,F12. These keys have different functions in different programs.
4) Navigation Keys:- They are used for moving through documents or web pages and something for editing the text. These keys include the Arrow keys, HOME, END, PgUp, PgDn, DELETE, and INSERT keys.
Q1:- State the different types of mouse .Explain them.
Ans:- There are three type of mouse:-
(1).Mechanical mouse : this type of mouse has a metal or rubber ball on its lower side that can roll in all the directions.the screen pointer moves according to the movement of the ball which is detected by the mechanical sensors within mouse .
(2). Opto-mechanical : this type of mouse uses a mechanism similar to the mechanical mouse .they only difference is that it uses optical sensors to detect the movement of the ball .
(3). Optical mouse : optical mouse does not have any mechanical moving parts
Q2:- Differentiate between impact and non -impact printers .
Ans:-
Impact printer
Non –impact printers
1. Impact printer allows physical contact between the printer head and paper.
1. Non-impact printers do not allow physical contact between the printing heads and paper
2. Impact printers is of two types
2. non-impact printer are of three types
3. Ex:-dot-matrix printer , daisy wheel printer etc.
3. EX:- thermal printers ,ink –jet printers ,laser printers etc.
Q4:- write the difference between a DVD and a CD.
Ans:-
CD
DVD
1.CD stands for compact disc
1.DVD stands for digital versatile disc
2.CD holds from 650 MB to 900 MB
2.DVD can holds 4.7 GB to 17 GB of data
3.CD are of two types
3.DVD are of three types
4.Ex :- CD-R,CD-RW
4.Ex:-DVD-R ,DVD-RW ,DVD-R+DVD-RW
Q5:- Explain the function and usage of a bar -code reader .
Ans:- It is an input device used for reading bar codes present on various products . A bar codes is a combination dark and light strips .it is a very use full device for billing and inventory application.
Q6:- Explain the three main types of Non -impact printers
Ans:-(I).Thermal printer
(II).Ink-jet printers
(III).Laser printers
1.Thermal printers:- Thermal printers is use a special heat sensitive paper characters are formed when heated elements come in contact with heat sensitive paper.
2.Ink-jet printers :- They produce images by spraying tiny droplets of ink on to the paper .the average quality of ink jet printers is 300 dpi (dots per inch)
3.Laser printers :- These printers use photocopy technology to printers .laser printers use a laser beam and dry powdered ink to produce a fine dot matrix pattern.
Q7:-Write the types of monitor? Explain the features.
Ans:-Monitor are of two types
1) Cathode Ray Tube
2) Liquid crystal Display(LCD)
1) CRT:- CRT monitors were the most common monitors untill flat pannel screen become affordable. It consist of a electron gun. CRT monitor are bulky and ocuupy a lot of space.
2)LCD:-LCD monitors are relatively thinner and lighter than CRT monitors. They use the light modulating properties of liquid crystals.
3)Touch Screen Monitor:-A touch screen is a special type of monitors thar]t allows the user to input information by touching the icons or graphical buttons present on the screen.
Q8:-Discuss the various types of memory stick?
Ans:-A memory stick is a removable flash memory card format. It is used as a storage media for portable devices like digital camera, mobile phone etc that can easily connected to personal computers.
Memory stick can come in follow varieties :-
1)Memory stick DUO are basically smaller versions of the memory stick PRO.
2)Memory stick PRO introduced in 2003 as a joint efforts of Sony and Sandisk. It is available in storage sizes upto 1 GB.
Q9:-Differentiate between Flatbed Plotter and Drum Plotter.
Ans:-
Flatbed
Drum
1) Flatbed plotters is known as Table plotter.
1) Drum plotter is known as Roller plotter.
2) It plots on a paper that is spread and fixed over a rectangular Flatbed table.
2) It consist of a Drum on which a paper is placed.
3) A pen monted on a moving carriage moves in accordance with the signals received from the CPU and produces drawing on the paper
3) The pen monted on a fixed carriage moves horizontally across the paper to create a perfect drawing.
Q10:- Explain the various types of keys of a Keyboard?
Ans:-There are mainly five types of key on keyboards :-
1) Typing Keys:- These keys include Letter(Alphabet keys), Numbers(Number keys), Punctuation(. , : , ; , ', ",) and special symbols (+ - * /) etc. These keys also include the shift, caps lock, space bar, backspace, and the tab keys.
2) Control keys:- These keys are either used alone or in combination with other keys to perform an action ctrl, Alt, window log key and esc key are various example of control keys.
3) Function Keys:- They are used to perform specifc tasks. They are placed on the top row of the keyboards and are labelled as F1, F2, F3,.......,F12. These keys have different functions in different programs.
4) Navigation Keys:- They are used for moving through documents or web pages and something for editing the text. These keys include the Arrow keys, HOME, END, PgUp, PgDn, DELETE, and INSERT keys.
5) Numeric Keys:- The numeric keypad consist of number keys from 0 to 9, the arithmetic operators and the decimal point. it is placed on the right side of a keyboard and is used for entering number at a faster pace.
Comments
Post a Comment