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IBM 5150 Technical Reference

IBM 5150
309 pages
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+5V
74LS38
8253
Timer
#2t
O
Output
OR
o
0--------------
__
0.678V
to
AUX
Input
0--------------
___
0.075V
to
MIC
Input
GND
Cassette Interface
Write
Hardware
Block Diagram
+5V
I
+5V
4.7
kOhm
SN75475
Relay
+5V-
Clamp
N/O
S
Coil
C~.
Cassett
e
~8
OR
In
VCC
Out
f--
Coil
Motor
Control
Motor-[O
On
0
r--
VSS
Com
"-
GND
Cassette
Motor
Control Block Diagram
System Board
1-29

Table of Contents

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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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