Radio buttons are so called because
they function like the channel presets on radios
. A typical group of radio buttons. A group of radio buttons behaves like a single control. Only the selected choice is accessible using the Tab key, but users can cycle through the group using the arrow keys.
Radio buttons were named
after the physical buttons used on older radios to select preset stations
– when one of the buttons was pressed, other buttons would pop out, leaving the pressed button the only button in the “pushed in” position.
In the mid 1890s, building on techniques physicists were using to study electromagnetic waves,
Guglielmo Marconi
developed the first apparatus for long distance radio communication.
radio button
A selectable button on a web page
. A radio button is small and round and, once clicked, has a black dot in the center.
Checkboxes allow the user to choose items from a fixed number of alternatives, while radio buttons allow the user to choose exactly
one
item from a list of several predefined alternatives. …
But
you cannot click or tap a selected radio button to deselect it
. … Selecting a radio button by default prevents these issues and communicates to the user from the start that he is required to choose one in the set.
The id of each radio button is unique. … The name attribute
is used to specify the entire group of radio objects
. All radio buttons in a group have the same name. HTML uses the name attribute to figure out which group a radio button is in, and to ensure that only one button in a group is selected.
Who found radio waves?
Heinrich Hertz
proved the existence of radio waves in the late 1880s.
A radio button should be
a small circle that has a solid circle inside it when selected
. Visually present groups of choices as groups, and clearly separate them from other groups on the same page. … A list of radio buttons, however, must always appear unified, so you cannot use subheads to break it up.
What are the advantages of radio?
- Low cost: Radio advertisements are typically cheaper than television ads.
- Flexibility: Advertisers can target listeners based on time, geographic location, channel and program.
- Vast coverage: Radio programming has millions of listeners nationwide.
Only
one radio button
in a given group can be selected at the same time. Radio buttons are typically rendered as small circles, which are filled or highlighted when selected.
The
Checked property
of the radio button is used to set the state of a radio button. You can display text, image or both on radio button control. You can also change the appearance of the radio button control by using the Appearance property.
- Click once in an area of the Word document to which you want to add the radio button. …
- Click the “Design Mode” button, which will display a list of available features.
There is a fundamental difference between them. In a checkbox group,
a user can select more than one option
. Each checkbox operates individually, so a user can toggle each response “on” and “off.” Radio buttons, however, operate as a group and provide mutually exclusive selection values.
About Checkbox Button#
The checkbox button is
similar to a checkbox in
that it presents a user with a binary choice for an item. … Exists without other multi-select elements (i.e. checkboxes) Allows users to select multiple entities.
Main differences. In Check box,
you can select multiple options
. In Option Button (Radio button) you can select one option. Radio buttons are circular and check boxes are square.
