Computer & IT

note!Answer: C) Traditional keyboard
A traditional keyboard is a full-sized rigid rectangular keyboard with function, navigation and numeric keys.

note!Answer: A) Ergonomic keyboard
Ergonomic keyboards are shaped to reduce wrist and hand strain during typing.

note!Answer: B) Toggle
A toggle key switches a function on or off each time it is pressed, such as Caps Lock.

note!Answer: A) Escape
The Escape key is generally used to cancel an action or close a menu or dialog.

note!Answer: C) Function
Function keys (F1–F12) are generally used as shortcuts to perform specific tasks. For example, F1 commonly opens Help, and F5 refreshes a page in many applications.

note!Answer: D) Graphics tablet
A mouse, joystick, and light pen are commonly classified as pointing devices. A graphics tablet is generally classified as a graphics input device used for drawing and design.

note!Answer: A) Pointer
The mouse pointer is the on-screen symbol that usually appears as an arrow.

note!Answer: D) Optical
The optical mouse is commonly used today because it detects movement using a light source and sensor rather than a rolling ball. However, the phrase “traditional type” usually refers to a mechanical (ball) mouse.

note!Answer: A) Mechanical
A mechanical mouse uses a rolling ball on its underside and is connected by a cable.

note!Answer: D) Optical
An optical mouse detects movement with a light sensor and has no moving parts such as a ball.

note!Answer: D) Optical
An optical mouse uses an LED or laser to emit light and a sensor to detect the reflected light.

note!Answer: C) Wireless
A wireless mouse communicates with the computer using radio or infrared signals and runs on batteries.

note!Answer: D) Trackball
A trackball is a stationary device where the user rotates a ball with the thumb or fingers.

note!Answer: A) Joystick
A joystick is a popular input device for video games because it allows users to control movement and direction easily.

note!Answer: C) Joystick
A joystick lets the user control game action through the direction, speed and pressure of movement.

note!Answer: D) Touch screen
A touch screen is a monitor with a sensitive layer that detects touch to select commands.

note!Answer: D) Touch screen
Touch screens are used in kiosks such as restaurant ordering systems, ATMs and information centers.

note!Answer: C) Scanner
A scanner moves across or scans printed text and images to convert them into digital data.

note!Answer: A) Light pen
An optical scanner, barcode reader, and MICR (Magnetic Ink Character Recognition) device are scanning or data-reading devices. A light pen is a pointing device used to select or draw directly on a compatible screen.

note!Answer: C) Flatbed scanner
A flatbed scanner works like a copy machine by placing a document on a glass surface and scanning it.