Computing Options for Physically Challenged Users
The ever-increasing presence of computers in everyone's lives has generated an awareness of the need to address computing requirements for those who have or may develop physical limitations. For these users, several different types of input and outp
Creating Solutions for Disabled Computer Users
Despite the growing focus on user-centered interface design promoted by human-
computer interaction researchers and practitioners, there is still is a large population that is
overlook; users with disabilities. (Nielsen 87) During software and ha
Different Kinds of Input Devices
Computers support various input and output devices to maximize functionality.
An input device is any piece of hardware that provides data and controls various signals as they process through the computer. If a computer did not use any input devices, users would wat
In computing, a keyboard is an input device, partially modeled after the typewriter keyboard, which uses an arrangement of buttons or keys, to act as mechanical levers or electronic switches. A keyboard typically has characters engraved or printed on the keys and each pr
Keys labelled with characters and set out in a pattern so each is in easy reach of a user’s fingers!!
Manually entering characters such as punctuation, letters, symbols and numbers.
Keys labelled with the same characters as...
Input devices for physically challenged computer users
Nowadays, there are many input or output devices designed for physically challenged computer users. There are many alternative devices, such as foot mouse, foot trackball, head mounted pointers, and chin mounted joysticks, and eye tracking dev
What is Input?
Input is any data or instructions entered into the memory of the computer.
Instructions entered into the computer can be in the form of programs, commands and user responses as explained below:
* A program is a series of instructions that tell a computer wh
Computers are machines that perform tasks or calculations according to a set of instructions, or programs. The first fully electronic computers, introduced in the 1940s, were huge machines that required teams of people to operate. Compared to those early mac
Table of Contents
Module 1: Computer Basics
Introduction to Computers
Common Computer Terminology
Computer Performance and Features
Computer Operating Systems
The Importance of Computer Devices
There are a lot of devices that can be used with a computer; each device is built for a different purpose or use, or sometimes for even more than one. These devices can help you obtain a faster way to do a task, or a way to complete your task in a better way. D
INPUT AND OUTPUT DEVICES
In computing, input/output, or I/O, refers to the communication between an information processing system (such as a computer), and the outside world possibly a human, or another information processing system. Inputs are the signals or data received by the system, and output
A THOROUGH OVERVIEW OF INPUT AND OUTPUT DEVICES
PRESENTED BY THE MEMBERS OF GROUP B COMPUTER SCIENCE DPT.
• The I/O devices as parts of the components of an information processing system or a computer system are those devices which enables the computer system to communicate with
Chapter 9 Input/Output Devices
I. Introduction II. Input Devices a. Keyboard,mouse,joystick,scanners,digital camera, bar code reader, touch Sreeen,Speech input device (microphone) III. Output Devices a. Monitor , Speaker, Printers ( different types) --------------------------------------
Gesture detection – the detection of human movements – may be used to enable advanced, differentiated smart features in portable electronics such as smart phones. Many of these features save energy by enabling electronics to expend the minimum amount of energy neces
COMPUTER DEVICES AND OPERATING SYSTEMS
The word 'computer' comes from the word compute which means 'to calculate'. Computers were developed from calculators as the need arose for more complex and scientific calculations. Charles Babbage is known as the father of computers beca
Computer Viruses: Past, Present And Future
In our health-conscious society, viruses of any type are an enemy. Computer
viruses are especially pernicious. They can and do strike any unprotected
computer system, with results that range from merely annoying to the disastrous,
time-consuming and expen
Computer Ergonomics In The Work Place
Business strive for high production at low cost. This would result in the
highest profit for a company. To many businesses, this is only a mirage. This
is because the 'low cost' of the business usually results in a 'high cost' for
the employees. This high
COMPONENTS OF A PERSONAL COMPUTER
Can you imagine a world without computers? Computers have changed everyday life in infinite ways that we would have never imagined 50 years ago. Long ago, computers were primarily used to compute numbers and to do word processing. As times have changed, compu