Serial and Parallel expansion cards are used to provide additional connection ports to a computer, specifically to provide either parallel or serial port connections.
A parallel port is only able to transmit data one way to a secondary device, commonly a printer or similar, using a dual data transmission system. This type of one-way transmission was also used for older external storage devices. Serial ports are able to process data in a two-way direction, and are often slightly slower than parallel ports due to the more accurate transmission of data they send.
Both serial ports and parallel ports have been mostly superseded by the faster and more efficient USB port in modern computers. A USB expansion card is used to provide additional connection ports to a computer by connecting the card to the motherboard. USB is short for Universal Serial Bus, and is the most common type of port found in modern computers. Peripherals such as printers, keyboards, printers, removable flash drives and mice can be attached to the computer.
USB cards are necessary if a computer does not already have this capability, or to add additional ports for more use of external devices at once. USB connections are faster at transmitting data and quickly became a general industry standard for cross-platform communication. A firewire card is used to provide computers with an IEEE interface connection, also known as a firewire. The term was coined by Apple in the early s, and the ports themselves have been included on most apple computers since the year Recently Apple has begun replacing this port with the Thunderbolt interface on all modern Mac computers.
The port itself is very similar to a USB connection, although USB is much more popular across a range of cross-platform devices and the two are not interchangeable. A storage card, often also called a flash memory card or simply a memory card that is connected to a computer in order to provide users with extra space to store their data on. This can include data such as music, pictures, text or video and is transferable to other devices such as digital cameras and mobile phones.
These cards vary in both physical size and data capacity, and are constantly being developed and upgraded. Data secured on storage cards is very stable and not in much danger of being lost or damaged outside of any actual physical damage to the card itself.
Cards are much smaller physically than they were even as recently as 10 years ago, and some such as the Compact Flash card have been made almost obsolete by the introduction of more stable non-volatile memory devices. Storage cards also have an advantage over hard disk drives as they are very portable, allow immediate access when booted up and do not require cooling.
There is a huge market among users for small, light-weight and low power storage devices with increasingly large amounts of data storage capacities. A modem card allows a computer to send an analog carrier signal carrying digital information, and decodes the reverse of this signal in return to reproduce the original digital data.
The most common way of doing this in the past was by using electrical signals transmitted over telephone lines, although more modern systems such as satellite, WiFi, mobile phones and mobile broadband modems also use this type of communication. Wireless modems can be embedded inside of a device or be external to it, and can be locked to only receive certain types of frequency signals, for example only those from one particular network provider.
Modern broadband modems are not limited to using telephone line, with newer types using satellite, television cables and power lines to transmit data signals. However, some laptops can have PC Cards that can be inserted into the side of the laptop. They may also have a Cardbus slot for an ExpressCard to be added. Home Dictionary E - Definitions.
Note Expansion cards can sometimes be called daughterboards. Types of expansion cards in a computer. Expansion card example. Do laptops or netbooks have expansion cards? Related pages. It enhances the sound-generating capabilities of a computer. It allows sound to be input through a microphone and output through speakers also. It is also called a network card.
It is a communication device that allows a computer to communicate via a network. It is also called an internal modem. It is a communication device that enables a computer to communicate via telephone lines or other means. Pc card is a thin credit card size device. This card adds memory capabilities to the computer. It contains communication devices such as modem.
Pc cards and flash memory cards can be attached to the computer without operating the system unit and restarting the computer.
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