IBM 5155 User Manual

To operate the system unit, you simply set the Power
switch to On. Your commands to the system can then
be entered through the keyboard. You will see your
commands and the system responses on your display.
If
a printer is attached to your system unit, you may also
request a printed copy of almost any data in the system.
3-6 System Unit

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)