Monochrome Display Adapter
E184284
Monochrome Display Adapter is an early IBM PC video display standard that supports only text output on a monochrome monitor, primarily used for business and word-processing applications.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Monochrome Display Adapter canonical | 2 |
| IBM Monochrome Display Adapter | 1 |
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
IBM PC display adapter
ⓘ
computer display standard ⓘ video display adapter ⓘ |
| alsoKnownAs | MDA ⓘ |
| attributeSupport |
blink
ⓘ
high intensity ⓘ reverse video ⓘ underline ⓘ |
| busInterface | 8-bit ISA ⓘ |
| characterCellResolution | 9×14 pixels per character cell ⓘ |
| characterMatrix | 8×14 dot matrix characters ⓘ |
| characterSetSize | 256 characters ⓘ |
| codePage | IBM code page 437 ⓘ |
| colorSupport | monochrome only ⓘ |
| compatibility | IBM BIOS text modes ⓘ |
| concurrentUse | could be used alongside Color Graphics Adapter ⓘ |
| connectorType | DE-9 video connector ⓘ |
| developer | IBM ⓘ |
| displayColor |
amber phosphor
ⓘ
green phosphor ⓘ |
| feature |
no support for color attributes
ⓘ
very sharp text rendering ⓘ |
| graphicsSupport | no bitmapped graphics support ⓘ |
| historicalSignificance | first official IBM PC display adapter ⓘ |
| introductionYear | 1981 ⓘ |
| marketPosition | business-oriented display adapter ⓘ |
| outputType | text mode only ⓘ |
| platform |
IBM PC
ⓘ
IBM PC XT ⓘ IBM PC compatible ⓘ |
| primaryUse |
business applications
ⓘ
text-based applications ⓘ word processing ⓘ |
| refreshRate | 50 Hz ⓘ |
| signalType | TTL digital video ⓘ |
| status | obsolete ⓘ |
| successor |
CGA
ⓘ
surface form:
Color Graphics Adapter
IBM Color/Graphics Monitor Adapter ⓘ
surface form:
Enhanced Graphics Adapter
|
| textModeColumns | 80 ⓘ |
| textModeRows | 25 ⓘ |
| textResolution | 720×350 effective text resolution ⓘ |
| typicalMonitor |
IBM 5151
ⓘ
surface form:
IBM 5151 Monochrome Display
|
| usedWith |
DOS text-mode software
ⓘ
early PC word processors ⓘ terminal emulation software ⓘ |
| videoMemoryAddress | B0000h ⓘ |
| videoMemorySize | 4 KB ⓘ |
| videoMemoryType | dedicated text buffer ⓘ |
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
IBM Monochrome Display Adapter
subject surface form:
Enhanced Graphics Adapter