IBM 5151

IBM PC s monitorem IBM 5151

IBM 5151 je 12“ monochromatický monitor, dodávaný k původním počítačům IBM PC s obrazovou kartou IBM Monochrome Display Adapter (MDA).[1][2][3][4][5] Adaptér podporoval pouze textový režim 80×25 se znaky v matici 9×14 pixelů. S tímto monitorem mohla pracovat také grafická karta Hercules Graphics Card (HGC), a karty Color Graphic Adapter (CGA) nebo Enhanced Graphic Adapter (EGA) v jejich monochromatických režimech.

Monitor má vakuovou obrazovku o úhlopříčce 11,5 palce s leptaným povrchem pro omezení odlesků, 90stupňovým vychylováním, s rozlišením 350 vodorovných řádků a obnovovací frekvencí 50 Hz.[3][4][6] Používá digitální vstupy s úrovněmi TTL, je schopen zobrazit nejméně tři úrovně jasu podle různých signálů na pinu 6 a 7 a připojuje se 9pinovým konektorem D-Sub.[7] Napájí se z počítačové síťové napájecí zásuvky na napájecím zdroji IBM PC, a proto nemá vlastní vypínač.

IBM 5151 používá luminifor typu P39, který produkuje jasně zelený monochromatický obraz určený pro zobrazení textu ve vysokém rozlišení.[8][6] Tento luminifor má dlouhý dosvit, který snižuje blikání obrazovky, ale způsobuje rozmazání při změnách obrazu a „ohony“ u pohyblivých obrázků.[9][10]

Specifikace

Typ Digitální, TTL[8]
Rozlišení 720 × 350
Rozměry 280 mm (V) × 380 mm (Š) × 350 mm (H)[8]
Hmotnost 7,9 kg[8]
Příkon 95,2 W[8]
řádkový kmitočet 18,432 kHz[8]
snímkový kmitočet 50 Hz[8]

Odkazy

Reference

V tomto článku byly použity překlady textů z článků IBM 5151 na anglické Wikipedii a IBM 5151 na španělské Wikipedii.

  1. ↑ The IBM XT LIVES!! [online]. [cit. 2008-11-16]. Dostupné v archivu pořízeném z originálu dne 2001-07-12. 
  2. ↑ IBM 5151-02 computer monitor, 1983|Science Museum Group Collection [online]. collection.sciencemuseumgroup.org.uk [cit. 2022-11-17]. Dostupné online. (anglicky) 
  3. ↑ a b FARQUHAR, Dave. First generation IBM PC monitors [online]. The Silicon Underground, 2021-08-31 [cit. 2022-11-17]. Dostupné online. (anglicky) 
  4. ↑ a b IBM 5151 Personal Computer Display - Peripheral - Computing History [online]. www.computinghistory.org.uk [cit. 2022-11-17]. Dostupné online. 
  5. ↑ , 1981. IBM 5151 Personal Computer monitor. [s.l.]: [s.n.]. Dostupné online. 
  6. ↑ a b Personal Computer Hardware Reference Library - IBM Monochrome Display (5151). [s.l.]: IBM Dostupné online. 
  7. ↑ minuszerodegrees.net [online]. www.minuszerodegrees.net [cit. 2022-11-17]. Dostupné online. 
  8. ↑ a b c d e f g IBM Monochrome Display user manual
  9. ↑ GIBSON, Steve, 1984. Bottles full of nothing. InfoWorld. 1984-06-11. 
  10. ↑ BY. Matrix Digital Rain On The IBM PC With A High Persistence Monitor [online]. Hackaday, 2022-01-03 [cit. 2022-11-17]. Dostupné online. (anglicky) 

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