Explain the trackball and thumbwheel devices, Computer Engineering

Assignment Help:

Explain the Trackball and Thumbwheel devices

 Joysticks

A joystick consists of a small, vertical lever (called the stick) mounted on a base that is used to steer the screen cursor around. Some joysticks are mounted on a keyboard. Most joysticks select screen positions with actual stick movement; while a few respond to the pressure on the stick. Figure 1.10 shows a movable joystick.

 The distance moved by the stick in any direction from its center position and the distance of the screen cursor movement in that direction are proportionate. Potentiometers mounted at the base of the joystick are used to measure the amount of movement, and the stick returns to the centre position when it is released due to the spring. One or more buttons can be programmed to act as input switches to signal certain actions once a screen position has been selected.

 


Related Discussions:- Explain the trackball and thumbwheel devices

CPE, WHAT IS CPE

WHAT IS CPE

Describe the forms tag, Now let's get a grip on how to add interactivity to...

Now let's get a grip on how to add interactivity to your web documents by way of the tag. With this tag you can add to your web pages a guestbook, surveys, order forms, ge

Difference between data warehousing and data mining, What is the difference...

What is the difference between data warehousing and data mining? The dissimilarity between data warehousing and data mining: Data warehousing seems to the data storage wh

What is clipboard, Clipboard is a temporary storage location in Windows. Th...

Clipboard is a temporary storage location in Windows. The clipart will kept one piece of information at a time when it is manually added to the clipart or is copied there.

Show the connections used in sound cards, Q. Show the Connections used in S...

Q. Show the Connections used in Sound cards? Sound cards must have connections to allow different functions.  One of the most significant is MIDI port (MIDI signifies Musical I

Analysis of amdahls law, Q. Analysis of Amdahls law? The conclusions of...

Q. Analysis of Amdahls law? The conclusions of analysis of Amdahl's law are: 1) To optimize performance of parallel computers modified compilers should be developed that sho

What is a map, What is a Map? A Map is an Array, which having the addre...

What is a Map? A Map is an Array, which having the addresses of the free space in the swap device that are allocatable resources, and the number of the resource units available

What are the difference between $display and $strobe, What are the Differen...

What are the Difference between $display and $strobe Difference between $display and $strobe is that $strobe displays parameters at the very end of current simulation time unit

Will case infer priority register if yes how give an example, Will case inf...

Will case infer priority register if yes how give an example? Yes case can infer priority register depending on coding style reg r; // Priority encoded mux, always @

Define internet infrastructure, As we know how packets travel from one comp...

As we know how packets travel from one computer to another over the Internet. However what's in-between? Actually what makes up the Internet infrastructure or backbone? Fi

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