DIP Switch is a manual electrical switch packaged with others in groups in a standard dual in-line package (DIP). This term may refer to any individual switch, or to the unit as a whole. This type of switch is designed for use on printed circuit boards along with other electronic components and is generally used to adjust the behavior of electronic devices for certain situations.
DIP switch is an alternative to jumper block. Their main advantage is that they change faster and no parts are lost.
US Patent 3,621,157 is the earliest known DIP patent. This patent reveals a rotary DIP switch created by Pierre P. Schwab. Schwab's patent application was filed on June 1, 1970, and the patent was granted on 16 November 1971.
The DIP switch with a sliding lever was awarded US Patent 4012608 in 1976. It was applied for 1974 and was used in 1977 in the ATARI Flipper game.
Video DIP switch
Type
There are many types of DIP switches. Some of the most common types are rotary, slides, and rockers.
The Rotary DIP switch contains several electrical contacts, one of which is selected by rotating the switch to align it with the number printed on the packet. It may be as big as a thumb, or so small that a screwdriver should be used to change it (though there is also a small potentiometer for this type).
The most common type of slide and rocker is a single, simple throw (SPST) contact strip, which can be switched on or off. This allows each button to select a one-bit binary value. The value of all switches in a packet can also be interpreted as a single number. For example, seven switches offer 128 combinations, allowing them to choose standard ASCII characters. Eight switches offer 256 combinations, which are equivalent to one byte.
The DIP switch package also has a socket pin or mounting guide to provide an electrical path from the switch contact to the circuit board. Although the circuit can use direct electrical contact, it is more common to convert it into high and low signals. In this case, the circuit board also needs an interface circuit for the DIP switch, which consists of a series of pull-up or pull-down resistors, buffers, decode logic, and other components. Typically, device firmware reads the DIP switch when the device is turned on.
By popularizing surface-mount technology, these switches are now generally available in non-DIP surface-mount package types. They are, however, still referred to as "DIP switches", as the terms have become linked to switch styles.
Maps DIP switch
Apps
The DIP switch is widely used in the ISA architecture of PC expansion cards to select IRQ and memory addresses. Before the advent of cheaper RAM, batteries were supported, the DIP switch was also frequently used in arcade games in the 1980s and early 1990s to enter game settings such as difficulties or credit amounts per coin. The DIP switch is very commonly used to set the security code on garage door openers as well as on some initial cordless phones. This design, which is used up to 12 switches in a group, is used to avoid RF interference from nearby door closers or other devices. Garage door opener currently uses a revolving code system for better security.
This type of switch is used on the initial video card for the initial computer to facilitate compatibility with other video standards. For example, CGA cards are allowed for MDA compatibility.
Recently (since the late 1990s), DIP switches have become less common in consumer electronics. The reasons include the tendency toward smaller products, requests for easier configuration via software menus, and falling volatile memory prices. However, DIP switches are still widely used in industrial equipment because they are cheap and easy to put into circuit design, and because they allow the settings to be checked at a glance without turning on the system.
DIP switch is still used on some remote control to prevent interference; for example, to control the ceiling fans (and light fixtures) that are attached to a single circuit junction box. The DIP switch assigns different radio frequencies to each transmitting/receiving pair, so that multiple units can be installed in different rooms of the same house, or different units of the same apartment building, without accidentally controlling each other.
Note
Source of the article : Wikipedia
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