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The counter implementation's accuracy is limited by the clock frequency. If time is measured by whole counts, then the resolution is limited to the clock period. For example, a 10 MHz clock has a resolution of 100 ns. To get resolution finer than a clock period, there are time interpolation circuits. [6]
Alexander Murray and Richard Morse invented and patented the first analog color scanner at Eastman Kodak in 1937. Intended for color separation at printing presses, their machine was an analog drum scanner that imaged a color transparency mounted in the drum, with a light source placed underneath the film, and three photocells with red, green, and blue color filters reading each spot on the ...
This ordering of pixels by rows is known as raster order, or raster scan order. Analog television has discrete scan lines (discrete vertical resolution), but does not have discrete pixels (horizontal resolution) – it instead varies the signal continuously over the scan line. Thus, while the number of scan lines (vertical resolution) is ...
ZX Spectrum outputs one video line in exactly 224 CPU clock cycles, where the CPU clock rate equals 3.5 MHz. This exactly matches the PAL standard 64 μs line time. However, the ZX Spectrum produces only 312 lines to form one display frame, while the 625-line PAL standard recommends 312.5 lines. As a consequence, the frame rate of the ZX ...
A 24-hour clock displayed on an oscilloscope configured as a vector monitor in X-Y mode with dual R2R DACs to generate the analog voltages. A vector monitor, vector display, or calligraphic display is a display device used for computer graphics up through the 1970s. It is a type of CRT, similar to that of an early oscilloscope.
This is a screenshot of a web page of a Wikimedia Foundation project. Text of Wikimedia projects (except for Wikinews [1] and parts of Wikidata [2]) are licensed under the Creative Commons Attribution Share-Alike 4.0 license and may additionally be licensed under the GNU Free Documentation License (Version 1.2, 1.3, or any later version published by the Free Software Foundation; with no ...
Basic digital alarm clock without a radio. The mark in the top-left of the display indicates that the time is 4:00pm (16:00), not 4:00am. A 1969 radio alarm clock (Sony Digimatic 8FC-59W) with an early mechanical-digital display. A digital clock displays the time digitally (i.e. in numerals or other symbols), as opposed to an analogue clock.
A digital image is an image composed of picture elements, also known as pixels, each with finite, discrete quantities of numeric representation for its intensity or gray level that is an output from its two-dimensional functions fed as input by its spatial coordinates denoted with x, y on the x-axis and y-axis, respectively. [1]