What Is the Difference Between a USB & a Parallel Cable?
The Universal Serial Bus cable is a technological innovation over the parallel cable. It is user friendly and allows you to use virtually any device or peripherals capable of connecting to a USB port instead of just storage and printer devices.
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History
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The parallel cable was first used in 1970 as a standard one-bit serial port. It provided one way transmission from a mainframe to a printer. The USB 2.0 specification was published in April 2000. It was standardized at the end of 2001.
Types
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There are two types of USB cables. Series A is used with high-speed peripherals and Series B is used with low-speed peripherals. There are two specifications for parallel port devices. EPP allows for high volumes of data in storage devices and ECP improves speed and functionality for printers.
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Features
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The parallel cable connects to the LPT port on your computer and requires a disk to configure the settings. The USB cable is versatile and user friendly, and it connects to the USB port using plug and play to automatically configure settings.
Functions
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The standard parallel port allows you to send 50 to 100 kilobytes of data per second. It can send and receive data. The USB combines the interface and the communication protocol. The maximum speed for USB 2.0 is 480 megabytes per second.
Considerations
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According to Hewlett Packard, if source and host are equal, the USB cable provides 35 percent to 50 percent faster speeds.
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