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The

Typewriter

Area

Key positions in the typewriter area are much like those

of a standard typewriter. There are, however, some

additional keys that perform control functions for the

IBM Portable Personal Computer.

([§J)

The Caps Lock key when pressed once, locks the

characters A through Z in the uppercase position. You

can get lowercase characters while Caps Lock is on by

pressing the Shift key. Pressing the Caps Lock key

again releases the uppercase mode for characters A

through

3-8

Keyboard

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IBM 5155 Specifications

General

Model	IBM 5155
Category	Desktop
Release Year	1984
CPU	Intel 8088
Clock Speed	4.77 MHz
Display	9-inch monochrome CRT
RAM	256 KB, expandable to 640 KB
Storage	One or two 5.25" 360KB floppy disk drives
Graphics	CGA (Color Graphics Adapter)
Ports	Parallel, Serial, Keyboard
Operating System	IBM PC DOS
Weight	30 pounds (13.6 kg)