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IBM Personal Computer User Manual

IBM Personal Computer
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Page #51 background image
Vertical Size Control
Use the control (as described below) only
if
the
character size on your IBM Color Display is incorrect.
IBM
Color
Display
,-~
o
Vertical
Size
Control
1 Set the system unit's Power switch (and
expansion unit's power switch, if attached) to
Off.
2 Set the display's Power control to On.
3 Turn the Brightness and Contrast controls fully
clockwise.
4 Turn the Vertical Size control fully
counterclockwise.
A black area appears across
the top and bottom of the screen.
Displays 3-11

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IBM Personal Computer Specifications

General IconGeneral
ManufacturerIBM
ModelIBM Personal Computer 5150
Release Year1981
ProcessorIntel 8088
Clock Speed4.77 MHz
RAM16 KB - 256 KB
GraphicsMDA or CGA
Power Supply63.5 W
Weight21 lbs (9.5 kg)
Storage5.25-inch floppy disk drives, optional 10 MB hard drive
Operating SystemIBM PC DOS
PortsParallel, Serial, Cassette

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