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USB LCD display introduction:
The extent of this text is restricted to monochrome character and graphic LCD displays modules
History of the USB interface:
USB technology was initially introduced in 1996 and is currently the most typical standard for interacting external marginals to a master microprocessor.
The next generation USB, 2.0 was releases in 2001. Third generation USB 3.0 came on the scene in 2009 with a transfer rate of 4.8Gbps.
Advantages of the USB standard include:
- Availability across many platforms.
- Power required for the external device is supplied through the USB connector
- High speed performance compared with older serial buses like RS232
- Plug and Play capability
Advantages of the USB LCD display module
USB LCD display modules supply the following advantages.
- Plug and play
* Plug and Play allows you to connect the display without the necessity for a reboot. This is a definite improvement from the past LCD modules which wanted to be attached to the most important controller/processor before power was supplied to the LCD. Or the primary controller wouldn't see the display.
- Power is supplied to the display
* USB supplies both cable and signal in one interface and disposes of noise. This lets you eliminate the requirement for 2 separate wires ?and the need for any external shielding.
* In addition, the USB doesn't require a separate ground providing you with assurance of continual operation.
Cost points to consider of the USB LCD display module
LCD modules with USB interfaces cost more than a SPI, IC2 or parallel interfaced display. This makes them unattractive for products that are manufactured in large amounts. If the OEM or make is cost driven, they'd forswear the USB and make use of either a serial or parallel interface bus. You can find more in depth comparing of USB LCD displays versus other business types. Make sure you do your research to find the best type for you and your business.
The extent of this text is restricted to monochrome character and graphic LCD displays modules
History of the USB interface:
USB technology was initially introduced in 1996 and is currently the most typical standard for interacting external marginals to a master microprocessor.
The next generation USB, 2.0 was releases in 2001. Third generation USB 3.0 came on the scene in 2009 with a transfer rate of 4.8Gbps.
Advantages of the USB standard include:
- Availability across many platforms.
- Power required for the external device is supplied through the USB connector
- High speed performance compared with older serial buses like RS232
- Plug and Play capability
Advantages of the USB LCD display module
USB LCD display modules supply the following advantages.
- Plug and play
* Plug and Play allows you to connect the display without the necessity for a reboot. This is a definite improvement from the past LCD modules which wanted to be attached to the most important controller/processor before power was supplied to the LCD. Or the primary controller wouldn't see the display.
- Power is supplied to the display
* USB supplies both cable and signal in one interface and disposes of noise. This lets you eliminate the requirement for 2 separate wires ?and the need for any external shielding.
* In addition, the USB doesn't require a separate ground providing you with assurance of continual operation.
Cost points to consider of the USB LCD display module
LCD modules with USB interfaces cost more than a SPI, IC2 or parallel interfaced display. This makes them unattractive for products that are manufactured in large amounts. If the OEM or make is cost driven, they'd forswear the USB and make use of either a serial or parallel interface bus. You can find more in depth comparing of USB LCD displays versus other business types. Make sure you do your research to find the best type for you and your business.
About the Author:
Howard Thomas is techie who researches LCD Display advancements. He blogs about the pros and cons of several types of LCDs.
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