Computer Input Devices: Exploring the World of Technology

Which of the following is an input device?

a) Bar code reader

b) Plotter

c) Braille printer

Final answer:

A bar code reader is the appropriate input device among the provided options.

Among the options provided, a bar code reader is considered an input device. In the field of computers and technology, input devices are hardware components that are used to provide data and control signals to a computer. Bar code readers, for instance, capture and read information contained on barcodes, such as those found on many products in a store, and convert it into a format that a computer can process and understand.

Conversely, a plotter and a Braille printer are output devices which are used to convey information from a computer to a user or another system. Output devices provide information in the form of text, images, or other forms of communication. They do not provide data input into the computer system.

Understanding the distinction between input and output devices is crucial in the world of technology. Input devices enable users to interact with computers and provide necessary data for processing, while output devices present the results of that processing in a usable format.

It's important to recognize the functions of different types of devices in a computer system to optimize their usage and efficiency. By knowing which devices are input or output-oriented, users can better understand how information flows within a computer system and how to utilize various components effectively.