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

Cloud computing, When Workday opened in 2005, the company had no idea it wo...

When Workday opened in 2005, the company had no idea it would be regarded as the most successful IPO of 2012. The introduction of cloud computing into the HR and financial systems

Variable-partition multiprogramming, Choose the descriptions below with the...

Choose the descriptions below with the most appropriate memory management scheme (A through D).  Solutions may be used once, more than once, or not at all. A.     Fixed-partitio

Explain about barrier, Q. Explain about Barrier? Barrier: No actual tra...

Q. Explain about Barrier? Barrier: No actual transfer of data takes place in this mode unless all the processors involved in the communication execute a particular block, calle

Workflow automation in e-business environment, How do you achieve workflow ...

How do you achieve workflow automation in e-business environment?   In order to run easily, organizations often standardize processes across the organization and encourage user

Define von neumann architecture, Von Neumann architecture was first majoran...

Von Neumann architecture was first majoranticipated structure for general-purpose computer. However before consideringmain components of von Neumann architecture let us first elabo

Explain the term- tracker ball and braille printers, Explain the term- Trac...

Explain the term- Tracker ball and Braille printers Tracker ball Easier to use than a mouse if people have problems using their arms and hands or if they have a coordinati

Mathematical model, how to write mathematical model for circular linked lis...

how to write mathematical model for circular linked list

How would you implement inheritance using vb.net/c#, How would you implemen...

How would you implement inheritance using VB.NET/C#? When we set out to execute a class using inheritance, we must first start with an existing class from which we will derive

What does the ''suppress dialog'' do, What does the 'SUPPRESS DIALOG' do? ...

What does the 'SUPPRESS DIALOG' do? Suppressing of whole screens is possible with this command.  This command permits us to perform screen processing "in the background".  Sup

Telematics, How are switching system classified

How are switching system classified

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