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The exact amount of reduction differed between monitor models: the original IBM 5153 Personal Computer Color Display reduces the green signal's amplitude by about one third, [12] while the IBM 5154 Enhanced Color Display internally converts all 4-bit RGBI color numbers to 6-bit ECD color numbers, [8] which amounts to halving the green signal's ...
[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 different aspect ratio via a different pixel clock and number of ...
Display: 22 inch LED widescreen [8] PCMag listed the pros as being the dual-core processor, small form factor, enterprise-class hardware, ThinkVantage Technologies, and the three year on-site warranty. [8] The price, the 90-day subscription to Symantec client security, and the lack of a DVD writer were listed as the cons of the desktop. [8]
IBM MDA, CGA and EGA monitors, all supported by the EGA card. The original IBM EGA was an 8-bit PC ISA card with 64 KB of onboard RAM. An optional daughter-board (the Graphics Memory Expansion Card) provided a minimum of 64 KB additional RAM, and up to 192 KB if fully populated with the Graphics Memory Module Kit. [22]
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 ...
The original IBM MDA was an 8-bit ISA card with a Motorola 6845 display controller, 4 KB of RAM, a DE-9 output port intended for use with an IBM monochrome monitor, and a parallel port for attachment of a printer, avoiding the need to purchase a separate card. [1]
On October 26, 1970, the U.S. Postal Service awarded IBM a US$6.7 million contract to develop the Advanced Optical Character Reader Postal Service. Development was carried out by both IBM Rochester and the IBM Federal Systems Division in IBM Gaithersburg. The goal was to sort 1 million letters in a 24-hour operating period. [41]
Later on 27 June 2001, IBM announced the production version of the monitor, known as T220. Later in November 2001, IBM announced its replacement, IBM T221. On 19 March 2002, IBM announced lowering the price of IBM T221 from US$17,999 to US$8,399. Later on 2 September 2003, IBM announced the availability of the 9503-DG5 model.