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IBM produced the 5153 Personal Computer Color Display for use with the CGA, but this was not available at release [4] and would not be released until March 1983. [ 5 ] Although IBM's own color display was not available, customers could either use the composite output (with an RF modulator if needed), or the direct-drive output with available ...
Site for old PC without sound cards. Programming the PC Speaker, by Mark Feldman for PC-GPE. Programming the PC Speaker, by Phil Inch: part 1, part 2 (includes a very detailed explanation of how to play back PCM audio on the PC speaker, and why it works) Bleeper Music Maker A freeware to use the PC speaker to make music (superseded by BaWaMI)
Inside external display devices there is a controller board that will convert the video signal using color mapping and image scaling usually employing the discrete cosine transform (DCT) in order to convert any video source like CVBS, VGA, DVI, HDMI, etc. into digital RGB at the native resolution of the display panel. In a laptop the graphics ...
S/PDIF and TOSLINK connectors on a piece of audio equipment. S/PDIF (Sony/Philips Digital Interface) [1] [2] is a type of digital audio interface used in consumer audio equipment to output audio over relatively short distances. The signal is transmitted over either a coaxial cable using RCA or BNC connectors, or a fibre-optic cable using ...
VGA section on the motherboard in IBM PS/55. The color palette random access memory (RAM) and its corresponding digital-to-analog converter (DAC) were integrated into one chip (the RAMDAC) and the cathode-ray tube controller was integrated into a main VGA chip, which eliminated several other chips in previous graphics adapters, so VGA only additionally required external video RAM and timing ...
Again I²C does not have a similar specification. SMBus defines both rise and fall time of bus signals. I²C does not. The SMBus time-out specifications do not preclude I²C devices co-operating reliably on the SMBus. It is the responsibility of the designer to ensure that I²C devices are not going to violate these bus timing parameters.
YPbPr is the analog video signal carried by component video cable in consumer electronics. The green cable carries Y , the blue cable carries P B and the red cable carries P R . YPbPr or Y ′ P ′ b P ′ r {\displaystyle Y'P'bP'r} , also written as YP B P R , is a color space used in video electronics , in particular in reference to ...
The control signal is a square wave operating at 25 kHz, with the duty cycle determining the fan speed. 25 kHz is used to raise the sound of the signal above the range of human hearing; use of a lower frequency could produce an audible hum or whine. Typically a fan can be driven between about 30% and 100% of the rated fan speed, using a signal ...