DESKTOP PRESENTATION

Dot Matrix PRINTER

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What do YOU think is a dot matrix printer?

What is a Dot Matrix Printer?

A dot matrix printer is a kind of an impact printer that prints by creating a series of dots closely spaced together.

Brief History

First ever printer designed was the mechanically driven apparatus by charles babbage for the difference engine. The dot matrix printer was introduced in the 1970s.

In the 1970s and 1980s the dot matrix printers were generally considered the best combination of cost and versatality. They were the most common business and personal printers until the 1990s. The first dot matrix printer was centronics 101.

USES

What is it used for?

• All governmental organisations use it.
• Marksheets of board exams
• Train reservation tickets
• ATMS
• Banking and Passbooks

Principle

Every printer has a head. In the dot matrix printer the head has a fixed number of pins or wires. Typically the pins or wires are arranged in one or several vertical columns. The pins strike an ink-coated ribbon and force contact between the ribbon and the paper, so that each pin makes a small dot on the paper. Predominantly used to print monochrome text (black) it is also capable of printing in colour.

ADVANTAGES

• Can print on multi part forms and carbon copies.
• Low printing cost per page.
• Can be used on continuous form paper, useful for data logging.
• Reliable and durable

DISADVANTAGES

• Noisy
• Limited print quality
• Low printing speed
• Limited colour printing

CENTRONICS 101

The Centronics 101[22] (introduced 1970) was highly innovative and affordable at its inception. Some selected specifications:

• Shipping: 200 pounds (approx. 91 kg), wooden crate, unpacked by removal of 36 screws
• Characters: 62, 10 numeric, 26 upper case and 26 special characters (no lower case)
• Character size: 10 characters per inch (10 "pitch")

• Line spacing: 6 lines per inch (6 LPI)
• Vertical control: punched tape reader for top of form and vertical tab
• Forms thickness: original plus four copies
• Interfaces: Centronics parallel, optional RS-232 serial

• Print speed: 165 characters per second
• Weight: 155 pounds (70.3 kg)
• Size: 27 ½" W x 11 ¼" H x 19 ¼ D (approx. 70 cm x 29 cm x 49 cm)

EPSON LQ-590

TALLY DASCOM

examples

DOT MATRIX PRINTER

Awesome timeline, step by step

To tell stories in an orderly, hierarchical, structured, and concise way. These are the four pillars for giving a successful presentation.

Step 2. And animations to make it fun.

Step 1. You can add interactivity to your timeline.

Step 4. And for you to wow your audience.

Step 3. The important thing is for everything to be suitable for the topic.

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Use timelines…

To tell stories in an orderly

You can briefly describe what the timeline of your presentation consists of and state the milestones achieved verbally so that no one falls asleep.

And for you to wow your audience.

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thank you!

Mishthy Agrawal and Ishita Pandey

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