Intro to I.T

In the Name of ALLAH ALMIGHTYWho is most Merciful, Gracious

First of all thanks to Allah Almighty who gave us the spirit to complete this task, which was given by Honorable ‘Sir Liaquat Hussain’ And thanks to my parents who supported me a lot for all of this.

ACKNOWLEDGMENT

SUBJECT Introduction to IT.TOPIC Discuss briefly Printer, plotter, MonitorGroup Members

Wajahat Ali Ghulam (Group leader)Zille-Subhani, Afzaal Rashid, Asad Mehmood, Danish Asad

ROLL NO sClass, Session

01, 15, 20, 27, 17.BBA (2010 – 2014)

GROUP# 02, Institute FASK, FACULTY OF ADMINISTRATIVE

SCIENCES KOTLI A.K

UNIVERSITY OF AZAD JAMMU & KASHMIR

PRESENTATION NO. 01

REFERENCES:-• IT series Book• Self-preparationSLIDES PREAPARED BY: Wajahat Ali Ghulam

SLIDES PREPARATION

• In 1953, the first high-speed printer was developed by Remington-Rand for use on the Univac computer, while the first dot matrix printer was marketed by IBM.

• In 1938, Chester Carlson invented a dry printing process called electro photography, commonly called a Xerox, the foundation technology for laser printers to come.

• And day-by-day it is replaced the quality, size, etc

HISTORY OF PRINTERS

• Printer is a type of a output device, that is used to produce output in the form of text and graphics on paper.

PRINTER—A DEFINITION

ANCIENT PRINTER’S PICTURES

TODAY'S PRINTER OVERALL VIEW

• IMAGE QULAITY — Measured in (dpi). Most printers produce 300-600 dpi.

• SPEED—Measured in pages per minute (PPM) or characters per second (CPS).

PRINTER’S ACCURACY

Major types of printerMajor types of printer

(i) Impact printers(ii) Non-impact printers

TYPES OF PRINTERS

(i). IMPACT PRINTERSThis used to print the pages by striking pins against the paper like hammer

(ii).NON-IMPACT PRINTERSThis used to print the pages without striking pins against the paper.

IMPACT PRINTERS & NON-IMPACT PRINTERS

TYPES OF IMPACT PRINTERS

(i) DOT MATRIX PRINTERS(ii) DAISY WHEEL PRINTERDOT MATRIX PRINTERS• It makes hardcopy by printing one character at a

time.• It uses “Pins” to print pages that are located on

it’s “Print Head”.• It’s speed is 200 or 1000 characters per minute.• Low resolution, speed measure in ‘CPS’,

character per second

DOT MATRIX PRINTER PICTURE

DAISY WHEEL PRINTER

Low quality print.

Daisy wheel printers are very similar to typewriters.

Slow-printing.

Prints the character by spikes that are located on the wheel.

DAISY WHEEL PRINTER MODEL

(i) LASER PRINTERS(ii) INKJET PRINTERSLASER PRINTERS:-• In this printer LASER beam is used to print

image or text, graphics whatever something may be.

• It also produce a high quality prints on paper.

TYPES OF NON-IMPACT PRINTERS

INTERNAL LASER PRINTER MODEL

EXTERNAL VIEW OF LASER PRINTERSEXTERNAL VIEW OF LASER PRINTERS

• The printer sprays tiny droplets The printer sprays tiny droplets of ink onto the paper.of ink onto the paper.• Color and black-and-white Color and black-and-white printing.printing.• Speed offered by this is (2-Speed offered by this is (2-4)pages per minute.4)pages per minute.• Inexpensive, and low operating Inexpensive, and low operating costs.costs.

INKJET PRINTERSINKJET PRINTERS

Inkjet printer's outlookInkjet printer's outlook

PLOTTERPLOTTER

•A output device.A output device.•On high scale printing.On high scale printing.•Architectural MapsArchitectural Maps•Sign Boards, Bill boardsSign Boards, Bill boards•Uses a variety of colorsUses a variety of colors

PLOTTER'S PICTUREPLOTTER'S PICTURE

• It is a type of output device• Only Softcopy out put.• Like T.V.• Monitor's Resolution• Diagonally Measured

MONITOR, A BRIEF EXPLANATION

MONITOR’S OUTLOOK

• CRT (Cathode Rays Tube)• Flat-penal display.• LCD (Liquid crystal display)

TYPES OF MONITORS

• CRT stands for Cathode Rays Tube.• In CRT monitors, electrons are fired at

phosphor dots on the screen.• The dots are groped into pixels, which glow

when struck by electrons.• In color CRTs, each pixel contains a RED,

GREEN and BLUE dot. These glow at varying intensities to produce color images.

CRT’s MONITORS

CRT cathode rays tube outlook.

• Most flat-panel monitors use liquid crystal display (LCD) technology.

• Passive matrix LCD’s uses a transistor for each row and column of pixels.

• Active matrix LCD uses transistor for each pixel on the screen.

• Thin film transistor display multiple transistors for each pixel.

Flat Panel Display

Flat Panel Display Outlook

• This type of display screens contains a substance called Liquid Crystal Display.

• The molecules of this substance line up in such a way that the light behind the screens blocked or allows to create a image.

LCD (Liquid Crystal Display)

LCD outlook

Comparison of Monitors• When Comparing monitors with each

other Consider four features

i. Sizeii. Dot pitchiii. Resolutioniv. Refresh Rate

• A monitor’s size is the diagonal measurement of its face, in inches

• For years, 15” monitors (13” viewing area) were standard.

• Today, 17” monitors (15” viewing area) are common.

• Larger monitors are available, but can be expensive.

SIZE OF MOINTORS

• Resolution is the number of pixels on the screen, expressed as a matrix (such as 600x800).

• A 17” monitor offers resolution from 640x480 up to 1280x1024.

• The video Graphics array (VGA) standard is 640x480. Super VGA (SVGA) monitors provide resolutions of 800x600, 1024x768 or higher.

RESOLUTION

• The pixel (a word invented from "picture element")is the basic unit ofprogrammable coloron a computer displayor in a computer image.

What is A pixel?

• Refresh rate is the number of times each second that the electron guns scan the screen’s pixels.

• Refresh rate is measured in Hertz (Hz). Or cycles per second.

• A slower rate may cause eyestrain

Refresh Rate

• Dot pitch is the distance between the phosphor dots that make up a single pixel.

• In color monitors, three dots (RED, GREEN, BLUE (RGB), comprise each pixel.

• Look for a dot pitch no greater than .28 millimeter.

Dot pitch

A LOT OF THANKS

Thanks to SIR LIAQUAT HUSSAIN.

And then thanks to all my class fellows. For supporting us a lot for this presentation.