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

Bit serial associative processor (bsap), Bit Serial Associative Processor (...

Bit Serial Associative Processor (BSAP) : When the associative processor accepts bit serial memory organization then it is known as bit serial associative processor. While only one

To show - hide the ssi document in the page, Step 1: Click on Edit Step ...

Step 1: Click on Edit Step 2: Select reference Step 3: Select Translation Step 4: Click on SSI Step 5: For showing the SSI file; choose one of the following options:

Nmknl''knl, Ask question bhjjnjnnjnjm#Minimum 100 words accepted#

Ask question bhjjnjnnjnjm#Minimum 100 words accepted#

How many select lines will a 32:1 multiplexer will have, How many select li...

How many select lines will a 32:1 multiplexer will have ? Ans. 5 select lines will be required for 32 inputs, as 2 5 = 32.

Concept development of project, Concept Development Journal General In...

Concept Development Journal General Information: Once you have researched and gained some insight into the topic you must then begin developing your ideas and your conceptua

Size of scripts and libraries, Main script section ("Sub Main .. End Sub) a...

Main script section ("Sub Main .. End Sub) and function bodies should fit within an A4-page (approx. two monitor-pages). If the code doesn't fit it is a candidate to do more decoup

Intuitively simple - user friendliness, Intuitively Simple - User Friendlin...

Intuitively Simple - User Friendliness This is the degree to which the system operates in congruence with human operation, in effect the machine does what we naturally think i

Physics, what is fresnel''s biprism?how it is used to determine wavelength ...

what is fresnel''s biprism?how it is used to determine wavelength of monochromatic source of light

Define a macro definition consists of, A macro definition consists of ? ...

A macro definition consists of ? Ans. A macro Definition have: A macro prototype statement, one or various model statements and also Macro pre-processor statements

Example on multi-statement forall construct, Q. Example on Multi-statement ...

Q. Example on Multi-statement FORALL construct? The subsequent statements set every element of matrix X to sum of its indices.  FORALL (i=1:m, j=1:n)      X(i,j) = i+j an

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