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

Give the organization of centralized store program control, Give the organi...

Give the organization of centralized store program control ( SPC). Within stored program control systems, a program or set of instructions for the computer that is stored in

Output comparators, Output comparators are used in  Theses are used in ...

Output comparators are used in  Theses are used in Dynamic testing of single and multiple module.

Define stack segment, Q. Define Stack segment ? 8086 Microprocessor su...

Q. Define Stack segment ? 8086 Microprocessor supports Word stack. Stack segment parameters tell the assembler to alert linker that this segment statement states the program s

What is a process scheduling, What is a Process Scheduling? Scheduling...

What is a Process Scheduling? Scheduling is a key element of the workload management software that usually performs several or all of: Queuing Scheduling Monito

What are the "field" and "chain" statements, What are the "field" and "chai...

What are the "field" and "chain" Statements? The FIELD and CHAIN flow logic statements let you Program your own checks. FIELD and CHAIN tell the system which fields you are ch

What is dispatch unit, What is dispatch unit? A separate unit which we ...

What is dispatch unit? A separate unit which we call the dispatch unit fetch instructions from the front of the queue and sends them to the execution unit. The dispatch unit al

3D rotation, Magnify a triangle with vertices A = (0,0), B = (3,3) and C = ...

Magnify a triangle with vertices A = (0,0), B = (3,3) and C = (6,4) to twice its size in such a way that A remains in its original position.

Floating point format, consider the 8 bit floating point format including s...

consider the 8 bit floating point format including support for normalised nimbers and nonnumeric values.it included 3 bits for mantissa and 4 bitys for excess 7 exponent

Explain the processor-memory interconnection network (pmin), Processor-Memo...

Processor-Memory Interconnection Network (PMIN): It's a switch which attaches several processors to distinct memory modules. Connecting each processor to every memory module in

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