Input | MCQs

Explanation

A scanner scans images, printed text, handwriting or an object and converts it to a digital image. 

Scanner is an output device. 

Scanner founder: Russell Kirsch

Russell Kirsch belongs to USA.

Explanation

Explanation

OCR scans the text optically, character by character, converts them into a machine readable code, and stores the text on the system memory.

OCR is an input device used to read a printed text.

AGM 24-12-2022

Explanation

Parallelogram represents the input and output symbols in a flowchart; it also represents data in general.

AGM 17-12-2022

Explanation

Three types of bus are used.

Address bus: carries memory addresses from the processor to other components such as primary storage and input/output devices. 

Data bus : carries the data between the processor and other components.

Control bus: carries control signals from the processor to other components.

Explanation

A keyboard is a physical input device, so it is considered hardware.

It allows the user to interact with the computer by typing commands or data.

Explanation

A pointing device is an input interface that allows a user to input data to a computer using physical gestures - point, click, and drag.

Mouse, Light-pen, Trackball & Joystick are examples of Pointing Devices.

Explanation

Keyboard is an input device.

Keyboard is similar to electric typewriter.

Keyboard uses serial port to connect with computer.

Keys on keyboard are of mainly three types:

Alphanumeric keys: letters and numbers 

Punctuation keys: comma, period, semicolon, etc.

Special keys: function keys, arrow keys, caps lock key, etc. 

Explanation

The Caps Lock button toggles capital letters for input.

Explanation

• A microprocessor takes input from various input devices, including both mouse and keyboard.
• These two devices are the primary input devices used to interact with a computer and provide input to the microprocessor.