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Archive for September, 2006

A KEYBOARD TO INCREASE PRODUCTIVITY AND REDUCE POSTURAL STRESS

 A new computer or office machine keyboard has been developed to match hand movements and reduce the postural stress imposed on operators by the Scholes (qwerty) design which engenders fatigue and can lead to pain and disability. The qwerty letter layout has been retained for already trained operators but an alternative efficient new arrangement may […]

Principais Dispositivos de Entrada

http://www.geocities.com/area51/2464/disp.htm

Como funciona um teclado de PC?

O teclado e seu host estão conectados através de 4 fios (entenda-se “host” como o dispositivo que se comunica com o teclado trocando informações com ele, que no caso de um PC é o próprio PC. A conexão entre um teclado e o PC é realizada através de um conector DIN de 5 pinos em […]

input device

Any machine that feeds data into a computer. For example, a keyboard is an input device, whereas a display monitor is an output device. Input devices other than the keyboard are sometimes called alternate input devices. Mice, trackballs, and light pens are all alternate input devices. by http://www.webopedia.com/TERM/i/input_device.html

Computer, Telephony & Electronics

On most computers, a keyboard is the primary text input device. While the mouse is also a primary input device but lacks the ability to easily transmit textual information. The keyboard also contains certain standard function keys, such as the Escape key, tab and cursor movement keys, shift and control keys, and sometimes other manufacturer-customized […]

O teclado e os primeiros PC

foto: IBM
- Em Junho de 1975, MOS Technology introduziu no mercado o seu 6502 microprocessor que custava apenas $25. Pouco tempo depois eles iriam anunciar o seu microcomputador KIM-1 baseado no 6502, com 2 K-bytes de ROM, (1 K-byte de RAM,  um keypad octal,  um ecrã LED, e um gravador de cassete para armazenar programas. Esta unidade,  que estava disponível apenas na forma compacta, tinha um preço inicial […]

Alternative Keyboard Gallery

Alternative Keyboard Gallery - http://tim.griffins.ca/gallery/keyboard/all.html

IBM Typewriter - timeline

 timeline history of the IBM Typewriter with old ads to show what the machines looked like. in http://www.etypewriters.com/history.htm

keyboard timeline links

- http://partners.nytimes.com/library/tech/99/08/circuits/articles/12keys-timeline.html
- http://typewriter.rydia.net/keyboard.htm
- http://www.maxmon.com/1874ad.htm
- http://www.museudocomputador.com.br/enciteclado.php
- http://www.maquinasdeescreverantigas.com.br/index.html
- http://ei.cs.vt.edu/~history/machines.html

3D Input Device

Navigator is a novel three dimensional input device that allows user to maneuver the cursor in a three-dimensional space. It employs the concept of velocity vector input, and is designed to be effective, convenient and unconventional. The device was developed by Dorota Blat and Charles Fan - http://paradise.caltech.edu/~fan/misc/navigator.html