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  2. Hitachi HD44780 LCD controller - Wikipedia

    en.wikipedia.org/wiki/Hitachi_HD44780_LCD_controller

    The data sheet indicates that for a resistor of 91 kΩ at V CC =5 V the oscillator can vary between 190 kHz and 350 kHz resulting in wait times of 52.6 μs and 28.6 μs instead of 37 μs. If a display with the recommended 91 kΩ resistor is powered from 3.3 volts the oscillator will run much slower.

  3. Cholesteric liquid crystal - Wikipedia

    en.wikipedia.org/wiki/Cholesteric_liquid_crystal

    The image shows a rotation of the director about 180° in a cholesteric phase. The corresponding distance is the half-pitch, p/2. A cholesteric liquid-crystal display (ChLCD) is a display containing a liquid crystal with a helical structure and which is therefore chiral.

  4. Input/output Buffer Information Specification - Wikipedia

    en.wikipedia.org/wiki/Input/output_Buffer...

    From version 5.0, specification contains two separate types of models, "traditional IBIS" and "IBIS-AMI." The traditional model is generated in text format and consists of a number of tables that captures current vs. voltage (IV) and voltage vs. time (Vt) characteristics of the buffer, as well as the values of certain parasitic components.

  5. Liquid-crystal display - Wikipedia

    en.wikipedia.org/wiki/Liquid-crystal_display

    A diffuser sheet is placed on both sides of the prism sheet to distribute the light of the backlight uniformly, while a mirror is placed behind the light guide plate to direct all light forwards. The prism sheet with its diffuser sheets are placed on top of the light guide plate.

  6. Liquid crystal - Wikipedia

    en.wikipedia.org/wiki/Liquid_crystal

    The brackets denote both a temporal and spatial average. This definition is convenient, since for a completely random and isotropic sample, S = 0, whereas for a perfectly aligned sample S=1. For a typical liquid crystal sample, S is on the order of 0.3 to 0.8, and

  7. I²C - Wikipedia

    en.wikipedia.org/wiki/I²C

    In AmigaOS one can use the i2c.resource component [25] for AmigaOS 4.x and MorphOS 3.x or the shared library i2c.library by Wilhelm Noeker for older systems. Arduino developers can use the "Wire" library. CircuitPython and MicroPython developers can use the busio.I2C or machine.I2C classes respectively.

  8. I3C (bus) - Wikipedia

    en.wikipedia.org/wiki/I3C_(bus)

    I3C targets which do not support HDR may then ignore bus traffic until they see a specific "HDR exit" sequence which informs them it is time to listen to the bus again. (One of the I2C Common Command Codes lets the controller ask a target which HDR modes it supports. This is an 8-bit mask, allowing additional HDR modes to be added in future.)

  9. Bit banging - Wikipedia

    en.wikipedia.org/wiki/Bit_banging

    In computer engineering and electrical engineering, bit banging [1] or bit bashing [citation needed] is a term of art for any method of data transmission that employs software as a substitute for dedicated hardware to generate transmitted or process received signals.