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

Vector-memory instructions-vector processing, Vector-Memory Instructions : ...

Vector-Memory Instructions : When vector operations with memory M are executed then these are vector-memory instructions. These instructions are denoted with the many function mapp

Explain the storage class auto, Explain The Storage Class auto The Stor...

Explain The Storage Class auto The Storage Class auto : Variables declared within function bodies are automatic by default. Thus, automatic is the most common of the four stora

Show various RISC processors, Q. Show Various RISC Processors? RISC has...

Q. Show Various RISC Processors? RISC has fewer design bugs and its simple instructions decrease design time. Sodue to all the above important reasons RISC processors have beco

NETWORK ADMIN, Discuss the risks of having a single root user and how more ...

Discuss the risks of having a single root user and how more limited management abilities can be given to others users on Linux/UNIX systems.uestion #Minimum 100 words accepted#

Sets and bags, Task: Sets and bags In mathematics, the notion of multis...

Task: Sets and bags In mathematics, the notion of multiset (or bag) is a generalisation of the notion of set. A bag is a special kind of container in which the items may be

Implementation of BUS, Q. Implementation of BUS Construction of a bus s...

Q. Implementation of BUS Construction of a bus system for four registers employing 4×1 multiplexers is displayed below. Every register has four bits which are numbered 0 throug

Databse, defination of query ?

defination of query ?

Usability test of website, For this part of your assessment you are require...

For this part of your assessment you are required to prepare and conduct a usability test of the website that you have chosen to review from Part A . You must design the script,c

Explain about interrupt servicing routines, Q. Explain about Interrupt serv...

Q. Explain about Interrupt servicing routines? First the situation is to be checked as to why the interrupt has happened. That includes not only device but also why the device

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