Explain the working of light pens, Computer Engineering

Assignment Help:

Explain the working of light pens

Light pens still exist, but due to several disadvantages they are not as popular as other input devices that have been developed. For example, when a light pen is pointed at the screen, part of the screen image is obscured by the hand and pen. And prolonged use of the light pen can cause arm fatigue. Also, light pens require special implementations for some applications because they cannot detect positions within back areas. To be able to select positions in any screen area with a light pen, we must have some non-zero intensity assigned to each screen pixel. In addition, light pens sometimes give false readings due to background lighting in a room.

 


Related Discussions:- Explain the working of light pens

What is recursion, What is recursion?  A recursive procedure should have tw...

What is recursion?  A recursive procedure should have two properties.  What are they? Recursion means function call itself repeatedly.         Properties : (1) There

Explain the product of sum form - standard forms, Explain the Product of Su...

Explain the Product of Sum Form - standard forms? The POS is the Boolean Expression containing OR terms, called as sum terms. The product denotes ANDing of these terms. F= (

List out the evaluation order for the expression tree, Draw an expression t...

Draw an expression tree for the string. f + (x+y) *((a+b)/(c-d)). Indicate the register requirement for each node and list out the evaluation order for the expression tree. For

Which one state is not a fundamental process state, Which one state is not ...

Which one state is not a fundamental process state? Ans. Blocked state is not a fundamental process state.

What is home shopping, Home Shopping TV broadcast of goods for purchase...

Home Shopping TV broadcast of goods for purchase, sent directly to a viewer . This online shopping is available because of e-commerce.

Inserting external media in the web page, Step 1: Click on the icon in the ...

Step 1: Click on the icon in the object tool bar Or Insert -> Media -> Choose the media type to be inserted Step 2: Find and select the file required (browse) Step 3: C

Determine a sample rate required for telephone conversation, A sample rate ...

A sample rate of            is required for a good quality representation of telephone conversation. A sample rate of 50 times/second /mile of distance travelled are needed fo

System requirements for chip design, The Peripheral interface chip system r...

The Peripheral interface chip system requires the construction of the interface chip circuit, which is controlled by main micro-controller via the user interface. I also need set

Write the benefits of broadcast model approach, a. Determine the non-functi...

a. Determine the non-functional system requirements that might be chosen for an application for a particular style and structures? b. Write the benefits of broadcast model appro

Let most segment of a name in dns represents, Let most segment of a name in...

Let most segment of a name in DNS represents? Lest Most segment of a name in DNS shows: Individual computer.

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd