Input Devices
Input devices are the ones through which users are allowed to input data and other instructions to the computer. The most popular choices for input devices are the keyboard and the mouse. Other examples include scanners,readers etc. Most input devices are electro-mechanical in nature which accept the inputs from the user through mechanical means, such as depressing of keys in a keyboard to enter some data or moving the mouse around on a surface to locate a position. Information acquired through such mechanical means is digitized(converted into electronic signals) and transmitted to the CPU/memory. Some important list about input device so that you can increase your knowledge.
- Keyboard
- Mouse
- Touch-pad
- Bar-code Reader
- Light Gun
- Light Pen
- Magnetic Stripe Reader
- Graphic Tablets
- Touch Screen
- Microphone
- MICR
- OMR
- Scanner
- Remote
- Webcam
Output Devices
Just as input devices are used to convey messages to the computer to the computer,output devices are used by the computer to convey messages back to the users. The most common output device that almost all computers have is the monitor. The monitor is used to display the results of computations,messages,etc. Other examples of output devices are printers,speakers,plotters,etc.
The input and the output devices are sometimes known as peripheral devices These auxiliary devices may be connected to a computer and used. They are auxiliary because their existence within a computer is not mandatory unlike the CPU or the memory.
Some important list about output device so that you can increase your knowledge.- Monitor
- Speaker
- Projector
- Printer
- Video Card
- Speech generating devices
- Sound Card
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