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What is use of lightpen?

A lightpen is a device used in conjunction with a computer monitor to allow users to interact with the screen by pointing directly at displayed objects or text. It emits a light beam that can be detected by the screen, enabling selections or drawing directly on the display. Lightpens were popular in the 1980s and 1990s, but have largely been replaced by touchscreens and stylus pens on modern devices.


Why did the ball point pen replace the fountain pen?

Many reasons: Ball-point pens are simply more convenient. They don't leak and the ink lasts for much longer. Ink replacement is almost unnecessary because buying a replacement ballpoint pen is so cheap. Ballpoint pens can be kept almost anywhere without fear that ink will leak or dry out. Fountain pens, on the other hand, must be constantly cleaned out and refilled. Ballpoint pens are much cheaper to produce. They can be made almost entirely of plastic, unlike fountain pens. Ballpoint pens are also easier to mass-produce without having to craft nibs separately. While fountain pens are used for fancy writing and have overall better ink quality, they take much longer to dry. This causes them to smear easily and sometimes run down the paper, easily ruining the work. One last but less obvious reason is that since fountain pens are designed to be pulled and not pushed across the paper, a left-handed person cannot use one without wearing down the nib faster and likely tearing the paper. That's because a left-handed person rights from left-to-right, pushing the pen across the paper as he writes. The current selections of left-handed fountain pens are quite limited and uncommon to see. As you can see, a ballpoint pen has none of the problems that a fountain pen has, sacrificing a little fanciness and legibility. Most people these days don't mind at all. After all, they're so abundant that you can keep them everywhere.


Related Questions

How many major selections does the Declaration have?

Four Major Selections.


How do you say the selections in French?

The selections are "les sélections" in French.


When was Kirlian Selections created?

Kirlian Selections was created on 2005-04-05.


A musician plans to perform 3 selections in how many ways can she arrange the musical selections?

22


When was Selections from Straight Outta Lynwood created?

Selections from Straight Outta Lynwood was created in 2006.


When was Selections from the Arista Years created?

Selections from the Arista Years was created on 1997-01-13.


What is the simple subject of this sentence The selections of Rockwell's paintings includes dogs children baseball and barbershops?

"selections"


What is the congressional body that must approve the president's ambassador selections?

the congressional body that approves the president's ambassador selections is the SENATE


DOES A dialog box contains a list of commands from which you make selections?

A dialog box contains a list of commands from which you make selections


When using the Issue Operator Permit ID (ZoPID) transaction you can remove a name from the Selected Personnel List by clicking the button.?

In the Issue Operator Permit ID (ZoPID) transaction, you can easily remove a name from the Selected Personnel List by clicking the designated button. This action will update the list accordingly, ensuring that only the desired personnel remain selected. Be sure to confirm any changes before proceeding to ensure accuracy in your selections.


What NFL players have most All-pro selections?

Jerry Rice is the most I've seen with 10 All Pro Selections.


When was Selections from Irving Berlin's White Christmas created?

Selections from Irving Berlin's White Christmas was created on 1954-05-04.