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 new generation USB, 2.0 was releases in 2001. 3rd 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 permits you to connect the display without the requirement for a reboot. This is a definite improvement from history LCD modules which wanted to be attached to the main 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 eliminates noise. This enables you to eliminate the necessity for 2 separate wires ?and the requirement for any external shielding.
* In addition, the USB doesn't require a fresh ground giving you assurance of continuing operation.
Cost points to consider of the USB LCD display module
LCD modules with USB interfaces are more costly than a SPI, IC2 or parallel interfaced display. This makes them unsavoury for products that are made in large quantities. If the OEM or produce is cost driven, they would renounce the USB and employ either a parallel interface or serial bus. You can find more in depth contrasting of USB LCD displays vs other business types. Make sure you do your research to find the best type for you and your company.
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 new generation USB, 2.0 was releases in 2001. 3rd 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 permits you to connect the display without the requirement for a reboot. This is a definite improvement from history LCD modules which wanted to be attached to the main 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 eliminates noise. This enables you to eliminate the necessity for 2 separate wires ?and the requirement for any external shielding.
* In addition, the USB doesn't require a fresh ground giving you assurance of continuing operation.
Cost points to consider of the USB LCD display module
LCD modules with USB interfaces are more costly than a SPI, IC2 or parallel interfaced display. This makes them unsavoury for products that are made in large quantities. If the OEM or produce is cost driven, they would renounce the USB and employ either a parallel interface or serial bus. You can find more in depth contrasting of USB LCD displays vs other business types. Make sure you do your research to find the best type for you and your company.
About the Author:
Howard Thomas is techie who researches LCD Display advancements. He writes about the pros and cons of different types of LCDs.
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