Input devices – is devices that we put INTO the computer from the real world to receive data or information. ID can be as human interaction as keyboard and mouse or simply environmental data as sensors. This is the list of possible examples of input devices such as : Camera , Compact Disk, Keyboard , Mouse , Digital Camera, Microphone , Drawing Tablet , Scanner, Disk Drive , Joystick , Touch Screen, Barcode reader , Business Card reader , Magnetic-stripe reader, etc.
First of all, an input device is any hardware device that sends data to the computer, without any input devices. In other words the input unit is formed by the input devices attached to the computer. An ...view middle of the document...
Some digital cameras are responsible to make video. Not all digital cameras hold a floppy disk, and the floppy disk can be taken out of the camera and put directly into the computer. Nowadays nearly all digital cameras have memory cards and it is very easy to input this card to the computer. For install using card reader to connect all possible data cards to PC. By the way card reader is also input device.
Drawing Tablet is similar to a white board, except you use a special pen to write on it and it's connected to the computer. Then the word or image you draw can be saved on the computer. There is some pens with Bluetooth. Logitech's Bluetooth-enabled digital pen is designed to address the current shortcomings of mobile/office data capture devices. A digital pen with USB and Bluetooth technology used in combination with a wireless handheld communications device or PC, can help an organization to more efficiency gather, transmit and share important data in real time.
Microphone is used to record sound. The sound is then saved as the sound file on the computer.
Scanner is used to copy pictures or other things and safe them as files on the computer.
Disk Drive – A disk drive can hold a CD or a floppy disk. It reads the information on the disk drive can hold a CD or floppy disk. It reads the information on the disk so the computer can use it.
Joystick – A joystick is used to move the cursor from place to place, and to clock on various items in programs. A joystick is used mostly for computer games.
Touch Screen - A touch screen is a computer screen or other screen that you can touch with u finger to enter information. Examples of touch screens include a smart boards, a microwave, a dishwasher, or an ATM at the bank.
Bar Code Scanner – A bar code scanner scans a little label that has a bar code on it. The information is then saved on the computer. Bar code scanners are used in libraries a lot.
Computer Technology: History and Development
Nothing epitomizes modern life better then the computer. For better or worse, computers have infiltrated every aspect of our society. Today computers do much more than simply compute: supermarket scanners calculate our grocery bill while keeping store inventory; computerized telephone switching centers play traffic cop to millions of calls and keep lines of communication untangled. But where did all this technology come from and where is it heading? To fully understand and appreciate the impact computers have on our lives and promises they hold for the future, it is important to understand their evolution.
Using the example of punched cards it is obvious how computer technologies developed through the ages.
A punched card, IBM card or Hollerith card is a piece of stiff paper that contains digital information represented by the presence or absence of holes in predefined position. Punched cards were widely distributed in 19th – 20th centuries for operating fairground organs and related instruments....