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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. Sample size determination - Wikipedia

    en.wikipedia.org/wiki/Sample_size_determination

    The table shown on the right can be used in a two-sample t-test to estimate the sample sizes of an experimental group and a control group that are of equal size, that is, the total number of individuals in the trial is twice that of the number given, and the desired significance level is 0.05. [4]

  4. List of 7400-series integrated circuits - Wikipedia

    en.wikipedia.org/wiki/List_of_7400-series...

    quad 2-line to 1-line data selector/multiplexer, non-inverting outputs three-state 16 SN74LS257B: 74x258 4 quad 2-line to 1-line data selector/multiplexer, inverting outputs three-state 16 SN74LS258B: 74x259 1 8-bit bit addressable input latch with clr 16 SN74LS259B: 74x260 2 dual 5-input NOR gate 14 SN74LS260: 74x261 1

  5. Datasheet - Wikipedia

    en.wikipedia.org/wiki/Datasheet

    Front page of a floppy disk controller data sheet (1979) A datasheet, data sheet, or spec sheet is a document that summarizes the performance and other characteristics of a product, machine, component (e.g., an electronic component), material, subsystem (e.g., a power supply), or software in sufficient detail that allows a buyer to understand what the product is and a design engineer to ...

  6. Liquid-crystal display - Wikipedia

    en.wikipedia.org/wiki/Liquid-crystal_display

    Many cheaper LCDs are only able to display 262144 (2 18) colors. 8-bit S-IPS panels can display 16 million (2 24) colors and have significantly better black level, but are expensive and have slower response time. Input lag, because the LCD's A/D converter waits for each frame to be completely been output before drawing it to the LCD panel.

  7. Sampling (signal processing) - Wikipedia

    en.wikipedia.org/wiki/Sampling_(signal_processing)

    64 kHz sample rate is regarded by professional DAC designers as an optimal sample rate: it is fast enough to include what we can hear, yet slow enough to do it pretty accurately. Faster rate means less accuracy. 64 kHz sample rate is also the closest one to the recommended 58 kHz [ 18 ] by J. Robert Stuart and 60-70 kHz [ 19 ] by Dan Lavry from ...

  8. Motorola 6845 - Wikipedia

    en.wikipedia.org/wiki/Motorola_6845

    Motorola 6845 CRT controller. The Motorola 6845, or MC6845, is a display controller that was widely used in 8-bit computers during the 1980s. [1] [2] Originally intended for designs based on the Motorola 6800 CPU and given a related part number, it was more widely used alongside various other processors, and was most commonly found in machines based on the Zilog Z80 and MOS 6502.

  9. MIL-PRF-38534 - Wikipedia

    en.wikipedia.org/wiki/MIL-PRF-38534

    The MIL-PRF-38534 specification establishes the general performance requirements for hybrid microcircuits (hybrid integrated circuit), multi-chip modules (MCM) and, similar devices and the verification and validation requirements for ensuring that these devices meet the applicable performance requirements.