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Back of a CGA Video Adapter board, with the RCA composite output connector visible on the right. The Color Graphics Adapter uses a standard RCA connector for connection to an NTSC-compatible television or composite video monitor. [3] The connector on the card is female and the one on the monitor cable is male.
Video interface controllers. The Signetics 2636 and 2637 are video controllers best known for their use in the Interton VC 4000 and Emerson Arcadia 2001 respectively. The MC6847 is a video display generator (VDG) first introduced by Motorola and used in the TRS-80 Color Computer, Dragon 32/64, Laser 200 and Acorn Atom among others.
The PGC was, at the time of its release, the most advanced graphics card for the IBM XT and aimed for tasks such as CAD. [ 2 ] Introduced in 1984, [ 3 ] the Professional Graphics Controller offered a maximum resolution of 640 × 480 with 256 colors on an analog RGB monitor , at a refresh rate of 60 hertz—a higher resolution and color depth ...
A flat-panel display (FPD) computer monitor A cathode-ray tube (CRT) computer monitor. A computer monitor is an output device that displays information in pictorial or textual form. A discrete monitor comprises a visual display, support electronics, power supply, housing, electrical connectors, and external user controls.
EGA-specific monitors used a dual-sync design which could switch from the 15.7 kHz of 200-line modes to 21.8 kHz for 350-line modes. [26] A non-IBM EGA card. Many EGA cards have DIP switches on the back of the card to select the monitor type. If CGA is selected, the card will operate in 200-line mode and use 8×8 characters in text mode. If EGA ...
The video output is 5 V TTL, as with the MDA card. [ 6 ] [ 7 ] [ 8 ] Nominally, the Hercules card provides a horizontal scanning frequency of 18.425 ± 0.500 kHz and 50 Hz vertical. [ 9 ] It runs at two slightly different sets of frequencies depending on whether in text or graphics mode, providing a different vertical refresh rate and a ...
Video signal generators are primarily classed according to their function. In addition, they may be classified according to the video formats and interface standard they support—one generator may generate composite analog signals (typically NTSC, PAL, or both), another may generate CCIR 601, and a third may generate MPEG streams over an ASI.
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 ...