IBM Personal Computer User Manual

The Numeric Keypad
[[§J]
Pressing the Numeric Lock key once places keys.0
through 9
of the numeric keypad in the numeric state.
Then when keys.0 through 9 are pressed, numbers
appear
on the screen. Pressing NumLock again returns
keys.0 through 9 to cursor-control keys.
y--
Scroll ~
Lock
Break
~
./.
The purpose of the Scroll Lock key is defined in your
operating system manual or application program
manual.
[[[tJJJ
Pressing the Insert key enables you to add characters in
the middle
of a line. Press it again and you're back to
normal operation.
3-18 Keyboard

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