Computer Hardware Devices

The answer is correct because on the keyboard after numeric keys, the alphabet keys stated in which starting six letters are QWERTY.

Interactive computer systems allow user to enter data or commands.

A plotter is a printer that interprets commands from a computer to make line drawings on a paper.

Modulator is a device that is responsible for conversion of signals.

Optical mark recognition (OMR) captures human marked data from document forms such as documents or tests.

Correct option is (2). 

Touch Screen works as both an input as well as an output device. A touch screen is a computer display screen that is an input device. Because it takes input from the user as well as gives output to the user. Hence, this option is correct.

A scanner optically scans images, documents, or objects and converts them into digital data that a computer can store and process. Unlike input devices like keyboard and mouse which capture text/commands, a scanner captures visual information. Printer is an output device, not an input device.

Xerox's Palo Alto Research Center (PARC) developed the modern computer mouse in the 1970s, which was then commercialized by Apple. While IBM and Dell are major computer companies, and Warner Bros is an entertainment company, neither developed the original mouse technology. Xerox PARC was responsible for many computing innovations including the graphical user interface and ethernet.

The Simputer (Simple, Inexpensive, Multilingual Computer) was designed as a low-cost, handheld alternative to PCs for use in developing countries. It aimed to provide internet access and computing power to people in rural areas who lacked traditional computer access. It was a significant effort to bridge the digital divide in India.

The cursor is the visual indicator on the screen that shows where the next interaction or text entry will occur. While a mouse is the physical device used to move it, the cursor itself indicates the position.

A mouse is a handheld input device that allows users to control the movement of a cursor on a computer screen. It was originally connected via a wire, though wireless versions are now common.

Hardware refers to the physical, tangible components of a computer system. This includes electronic parts like the CPU and motherboard, as well as mechanical parts like the casing and keyboard.

A light pen is a light-sensitive pointing device used to select or draw objects on a computer's display. While it is an input device, 'pointing device' is the more specific classification provided in the options.