Human Computer Interaction | MCQs

Explanation

• A user interface that is easy to use is considered to be user friendly
• ...
• A GUI (user interface design guidelines) is considered to be more user-friendly than a text-based command-line interface.
• such as MS-DOS, or the shell of Unix-like operating systems.
• **
• The user interface (UI) is the point of human-computer interaction and communication in a device.
• The user interface (UI) includes display screens, keyboards, a mouse and the appearance of a desktop. 
  

Explanation

Communication between a keyboard and computer is simplex, meaning data flows in one direction only — from keyboard to computer.

The computer does not send data back to the keyboard during typing.

There are 3 main data transmission modes:

1. Simplex: Data flows in one direction only (e.g., keyboard to computer).
2. Half-Duplex: Data can flow both ways, but not at the same time (e.g., walkie-talkies).
3. Full-Duplex: Data flows both ways simultaneously (e.g., telephone conversations).

Explanation

An icon is a small graphical representation of a program, feature, or file

Icons help users quickly identify the type of file representation by the icon

They are a component of the graphical user interface (GUI)

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 mouse can help in Computing To move the cursor on the screen

Explanation

The point and draw device is an input system that helps to point and select an icon to be shown on the screen quickly.

A mouse is a point-and-draw device.

Explanation

A joystick is the easiest and most effective way of operating a mouse.

They work in a similar manner to the joystick control on a wheelchair.

The mouse pointer moves fastest when the joystick is pushed fully in any direction.