IBM Personal Computer User Manual

When you first position the system unit switch to
On, the power-on self test (POST) occurs. The
time the POST takes (13 to 90 seconds)
is
determined by the amount of memory installed
in your system unit.
2
Set the Power switch
on the expansion unit (if
attached) to On. Turn on all other attached
devices.
3 Set the Power switch on the system unit to On.
Normally, you should observe three responses:
A The cursor will appear on the screen in
approximately 4 seconds.
B One short beep
will be heard after memory
is tested.
C The IBM Personal Computer BASIC
message will appear
on the screen.
A
B
~IIIIIIIIIIIII~I~I
\
c
The IBM Personal Computer
,1/
3-6 Getting Ready

IBM Personal Computer Specifications

General

Manufacturer	IBM
Model	IBM Personal Computer 5150
Release Year	1981
Processor	Intel 8088
Clock Speed	4.77 MHz
RAM	16 KB - 256 KB
Graphics	MDA or CGA
Power Supply	63.5 W
Weight	21 lbs (9.5 kg)
Storage	5.25-inch floppy disk drives, optional 10 MB hard drive
Operating System	IBM PC DOS
Ports	Parallel, Serial, Cassette