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IBM 5150 User Manual

IBM 5150
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Here are some filenames with extensions:
81PRICES.JUl
81PRICES.AUG
AVRG.$&%
WEATHER.80
IMPORTANT:
If
a filename is followed by an extension,
you
must use
both
parts when telling DOS
about
that
file.
Bad,
Okay,
and
Good
Names
for
Files
With all the possibilities, filenames can be unusual,
to
say the least.
DOS likes names
that
follow the rules. These files have
names
that
DOS will
not
accept:
Name
Why DOS
won't
accept
it
A
AND
B Spaces in it
A,B,
&C Commas in
it
.PGM
Filename missing
ANDTHISONEISTOO.lONG
These names are okay for DOS:
o«»o.xxx
#1#2#A3B
@@.---
Z
but
can
you
guess
what
is in any
of
these files?
A
good
name for a file will help
you
remember what kind
.
of
infomntion
is
in the file, and perhaps whether
it's
a
file
that
contains a program
or
only data.
For
example,
ADDRLJST.BAS is a good name for a BASIC program
file
that
prints an address list.
DOS 3-39

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IBM 5150 Specifications

General IconGeneral
ProcessorIntel 8088
Clock Speed4.77 MHz
RAM16 KB - 256 KB
ManufacturerIBM
Model5150
Release Year1981
Storage5.25-inch floppy drives
GraphicsMDA or CGA
Operating SystemIBM PC DOS
PortsCassette, keyboard
Expansion Slots5

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