Want this question answered?
Input in the sense that it helps process data/information around the system AFAP but output in the sense that the data/information is to the processor and they do the work from there.
A USB drive is a device that stores data and could be considered either an output or input device, though not in the sense of a monitor or speakers being an output device or a keyboard and mouse an input device. The data it contains cannot be directly accessable by the human senses in those same terms.
I believe you are referring to the screen only. A touch screen works as a input and output device
A hard disk drive (HDD) is neither an input nor an output device. It is a Storage Device. It helps to store the data in a Non-Volatile form (i.e Data stored in Hard Drive is not lost even after it's power source removed) and data can be retrieved at any time by enabling power for the Hard Drive.
Mostly output! Many inkjets send information about ink levels, paper status and so on back to the computer, so in that sense are and input/output device.
A motherboard takes both input and output. For example, it may take inputs from a keyboard or mouse, and output video from an integrated graphics card. In a more general sense, the motherboard is the device which connects all of the pieces of the computer together; All of the data sent between devices is routed through the motherboard. In effect, every one of these data transmissions can be viewed as input and output (input data from one device to the mobo, output the data from the mobo to another device).
A motherboard takes both input and output. For example, it may take inputs from a keyboard or mouse, and output video from an integrated graphics card. In a more general sense, the motherboard is the device which connects all of the pieces of the computer together; All of the data sent between devices is routed through the motherboard. In effect, every one of these data transmissions can be viewed as input and output (input data from one device to the mobo, output the data from the mobo to another device).
CPU: it is processing part of computer like brain in us i/p and o/p devices: these are the interfaces between cpu and human man , its like sense organs in our body(i.e through sense organs we get information from surrounding, sent to brain to think, after that we send the reply of brain through sense organ)
An input device is the one which is used to enter data by the user or accepted by the computer in the form of typing, clicking or sense like touching. the input devices the data inputted into binary (1s and 0s) so that it can be understood by the computer and processing etc. can be done. Ex. Mouse(click,drag), Keyboard(pressing), stylus(touch) etc.
In the strictest sense, no. It is an output device only. However, touch screens are input devices, but some would say this is just the touch panel mounted on top of the screen - so the screen is an output device while the touch panel is a separate input device. They are integrated into one unit but do have separate connection to the computer. Some would say its it one unit that does both input and output since the touch panel is integrated. The case could be made for either really, its just semantics anyway. Also, some monitors have USB hubs built in, but these really just bridge the USB device and the USB controller in the PC with no actual processing of data, so really shouldn't be considered an input device either.
An optical mouse is a computer input device that uses a laser to sense the movement of your hand. The old style mouse used a ball with wheel sensors attached to it.
UPC (United Product Code) scanner, or simply bar code scanner